/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:51:54,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:51:54,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:51:54,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:51:54,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:51:54,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:51:54,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:51:54,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:51:54,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:51:54,789 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:51:54,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:51:54,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:51:54,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:51:54,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:51:54,790 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:51:54,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:51:54,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:51:54,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:51:54,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:51:54,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:51:54,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:51:54,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:51:54,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:51:54,795 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:51:54,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:51:54,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:51:54,795 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:51:54,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:51:54,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:51:54,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:51:54,989 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:51:54,989 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:51:54,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i [2023-12-19 12:51:55,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:51:56,136 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:51:56,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i [2023-12-19 12:51:56,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14de8713c/4d09881d6dfc4632a53b92fab5889b73/FLAGad3eea07c [2023-12-19 12:51:56,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14de8713c/4d09881d6dfc4632a53b92fab5889b73 [2023-12-19 12:51:56,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:51:56,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:51:56,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:51:56,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:51:56,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:51:56,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f04cde9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56, skipping insertion in model container [2023-12-19 12:51:56,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,209 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:51:56,298 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i[916,929] [2023-12-19 12:51:56,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:51:56,412 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:51:56,425 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i[916,929] [2023-12-19 12:51:56,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:51:56,492 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:51:56,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56 WrapperNode [2023-12-19 12:51:56,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:51:56,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:51:56,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:51:56,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:51:56,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,573 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 354 [2023-12-19 12:51:56,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:51:56,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:51:56,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:51:56,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:51:56,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,646 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 12:51:56,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:51:56,711 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:51:56,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:51:56,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:51:56,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (1/1) ... [2023-12-19 12:51:56,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:51:56,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:51:56,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:51:56,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:51:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:51:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:51:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:51:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:51:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:51:56,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:51:56,866 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:51:56,867 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:51:57,325 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:51:57,380 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:51:57,380 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:51:57,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:51:57 BoogieIcfgContainer [2023-12-19 12:51:57,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:51:57,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:51:57,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:51:57,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:51:57,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:51:56" (1/3) ... [2023-12-19 12:51:57,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cf47e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:51:57, skipping insertion in model container [2023-12-19 12:51:57,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:51:56" (2/3) ... [2023-12-19 12:51:57,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cf47e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:51:57, skipping insertion in model container [2023-12-19 12:51:57,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:51:57" (3/3) ... [2023-12-19 12:51:57,387 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-39.i [2023-12-19 12:51:57,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:51:57,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:51:57,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:51:57,437 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;@44ca2b55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:51:57,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:51:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 94 states have internal predecessors, (144), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 12:51:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-19 12:51:57,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:51:57,454 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:51:57,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:51:57,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:51:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1785539059, now seen corresponding path program 1 times [2023-12-19 12:51:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:51:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117500172] [2023-12-19 12:51:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:51:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:51:57,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:51:57,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117500172] [2023-12-19 12:51:57,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:51:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624927968] [2023-12-19 12:51:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:57,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:51:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:51:57,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:51:57,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:51:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:51:57,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:51:57,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:51:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-12-19 12:51:58,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:51:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624927968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:51:58,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:51:58,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:51:58,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208178343] [2023-12-19 12:51:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:51:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:51:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:51:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:51:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:51:58,057 INFO L87 Difference]: Start difference. First operand has 138 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 94 states have internal predecessors, (144), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-19 12:51:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:51:58,108 INFO L93 Difference]: Finished difference Result 273 states and 496 transitions. [2023-12-19 12:51:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:51:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 281 [2023-12-19 12:51:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:51:58,123 INFO L225 Difference]: With dead ends: 273 [2023-12-19 12:51:58,123 INFO L226 Difference]: Without dead ends: 136 [2023-12-19 12:51:58,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:51:58,129 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:51:58,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:51:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-19 12:51:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-19 12:51:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 92 states have internal predecessors, (139), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 12:51:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 223 transitions. [2023-12-19 12:51:58,190 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 223 transitions. Word has length 281 [2023-12-19 12:51:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:51:58,190 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 223 transitions. [2023-12-19 12:51:58,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-19 12:51:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 223 transitions. [2023-12-19 12:51:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-19 12:51:58,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:51:58,196 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:51:58,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 12:51:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:51:58,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:51:58,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:51:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1256133947, now seen corresponding path program 1 times [2023-12-19 12:51:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:51:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280316711] [2023-12-19 12:51:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:51:58,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:51:58,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707233372] [2023-12-19 12:51:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:58,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:51:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:51:58,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:51:58,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:51:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:51:58,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:51:58,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:51:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-19 12:51:58,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:51:58,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:51:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280316711] [2023-12-19 12:51:58,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:51:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707233372] [2023-12-19 12:51:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707233372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:51:58,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:51:58,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:51:58,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97447705] [2023-12-19 12:51:58,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:51:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:51:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:51:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:51:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:51:58,734 INFO L87 Difference]: Start difference. First operand 136 states and 223 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:51:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:51:58,821 INFO L93 Difference]: Finished difference Result 370 states and 605 transitions. [2023-12-19 12:51:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:51:58,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 281 [2023-12-19 12:51:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:51:58,828 INFO L225 Difference]: With dead ends: 370 [2023-12-19 12:51:58,828 INFO L226 Difference]: Without dead ends: 235 [2023-12-19 12:51:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:51:58,834 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 136 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:51:58,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 486 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:51:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-19 12:51:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2023-12-19 12:51:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.5) internal successors, (243), 163 states have internal predecessors, (243), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-19 12:51:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2023-12-19 12:51:58,869 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 281 [2023-12-19 12:51:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:51:58,869 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2023-12-19 12:51:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:51:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2023-12-19 12:51:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:51:58,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:51:58,873 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:51:58,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:51:59,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:51:59,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:51:59,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:51:59,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1313048824, now seen corresponding path program 1 times [2023-12-19 12:51:59,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:51:59,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902220505] [2023-12-19 12:51:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:59,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:51:59,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:51:59,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441268844] [2023-12-19 12:51:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:51:59,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:51:59,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:51:59,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:51:59,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:51:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:51:59,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:51:59,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:51:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-19 12:51:59,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:51:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:51:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902220505] [2023-12-19 12:51:59,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:51:59,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441268844] [2023-12-19 12:51:59,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441268844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:51:59,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:51:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:51:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640790074] [2023-12-19 12:51:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:51:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 12:51:59,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:51:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 12:51:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 12:51:59,667 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:00,246 INFO L93 Difference]: Finished difference Result 1030 states and 1672 transitions. [2023-12-19 12:52:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:52:00,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-19 12:52:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:00,251 INFO L225 Difference]: With dead ends: 1030 [2023-12-19 12:52:00,251 INFO L226 Difference]: Without dead ends: 799 [2023-12-19 12:52:00,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:52:00,252 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 619 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:00,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1605 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 12:52:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-19 12:52:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 692. [2023-12-19 12:52:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 465 states have (on average 1.4602150537634409) internal successors, (679), 469 states have internal predecessors, (679), 218 states have call successors, (218), 8 states have call predecessors, (218), 8 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-19 12:52:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1115 transitions. [2023-12-19 12:52:00,336 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1115 transitions. Word has length 282 [2023-12-19 12:52:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:00,337 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1115 transitions. [2023-12-19 12:52:00,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1115 transitions. [2023-12-19 12:52:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:00,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:00,342 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:00,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:00,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:00,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:00,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1136551306, now seen corresponding path program 1 times [2023-12-19 12:52:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:00,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535684442] [2023-12-19 12:52:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:00,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:00,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056749773] [2023-12-19 12:52:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:00,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:00,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:00,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:52:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:00,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:52:00,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1653 proven. 45 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-19 12:52:00,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-19 12:52:01,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535684442] [2023-12-19 12:52:01,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056749773] [2023-12-19 12:52:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056749773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:01,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 12:52:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942880965] [2023-12-19 12:52:01,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:01,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 12:52:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 12:52:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:52:01,004 INFO L87 Difference]: Start difference. First operand 692 states and 1115 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-19 12:52:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:01,244 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2023-12-19 12:52:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:52:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 282 [2023-12-19 12:52:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:01,247 INFO L225 Difference]: With dead ends: 976 [2023-12-19 12:52:01,247 INFO L226 Difference]: Without dead ends: 285 [2023-12-19 12:52:01,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 556 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:52:01,251 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 266 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:01,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 398 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:52:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-19 12:52:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 275. [2023-12-19 12:52:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 186 states have (on average 1.456989247311828) internal successors, (271), 186 states have internal predecessors, (271), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-19 12:52:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 439 transitions. [2023-12-19 12:52:01,277 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 439 transitions. Word has length 282 [2023-12-19 12:52:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:01,277 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 439 transitions. [2023-12-19 12:52:01,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-19 12:52:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 439 transitions. [2023-12-19 12:52:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:01,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:01,280 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:01,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:01,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:01,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:01,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1749997194, now seen corresponding path program 1 times [2023-12-19 12:52:01,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707649486] [2023-12-19 12:52:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:01,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:01,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770891402] [2023-12-19 12:52:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:01,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:01,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:01,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:52:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:01,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 12:52:01,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-19 12:52:01,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:01,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707649486] [2023-12-19 12:52:01,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770891402] [2023-12-19 12:52:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770891402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:01,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:52:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969605935] [2023-12-19 12:52:01,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:52:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:52:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:52:01,807 INFO L87 Difference]: Start difference. First operand 275 states and 439 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:02,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:02,022 INFO L93 Difference]: Finished difference Result 875 states and 1418 transitions. [2023-12-19 12:52:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 12:52:02,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-19 12:52:02,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:02,025 INFO L225 Difference]: With dead ends: 875 [2023-12-19 12:52:02,025 INFO L226 Difference]: Without dead ends: 601 [2023-12-19 12:52:02,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 12:52:02,027 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 583 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:02,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 650 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:52:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-19 12:52:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 325. [2023-12-19 12:52:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 234 states have (on average 1.4786324786324787) internal successors, (346), 234 states have internal predecessors, (346), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-19 12:52:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 514 transitions. [2023-12-19 12:52:02,045 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 514 transitions. Word has length 282 [2023-12-19 12:52:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:02,046 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 514 transitions. [2023-12-19 12:52:02,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 514 transitions. [2023-12-19 12:52:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:02,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:02,048 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:02,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:02,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:02,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:02,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash 300986804, now seen corresponding path program 1 times [2023-12-19 12:52:02,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:02,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242586967] [2023-12-19 12:52:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:02,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:02,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671535495] [2023-12-19 12:52:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:02,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:02,286 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) [2023-12-19 12:52:02,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:52:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:02,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 12:52:02,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-19 12:52:02,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242586967] [2023-12-19 12:52:02,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671535495] [2023-12-19 12:52:02,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671535495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:02,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:02,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 12:52:02,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518191067] [2023-12-19 12:52:02,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:02,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:52:02,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:52:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:02,557 INFO L87 Difference]: Start difference. First operand 325 states and 514 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:02,662 INFO L93 Difference]: Finished difference Result 605 states and 954 transitions. [2023-12-19 12:52:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:52:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-19 12:52:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:02,665 INFO L225 Difference]: With dead ends: 605 [2023-12-19 12:52:02,665 INFO L226 Difference]: Without dead ends: 281 [2023-12-19 12:52:02,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:52:02,667 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 273 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:02,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 251 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:52:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-19 12:52:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-19 12:52:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.4157894736842105) internal successors, (269), 190 states have internal predecessors, (269), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-19 12:52:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 437 transitions. [2023-12-19 12:52:02,686 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 437 transitions. Word has length 282 [2023-12-19 12:52:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:02,687 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 437 transitions. [2023-12-19 12:52:02,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 437 transitions. [2023-12-19 12:52:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:02,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:02,690 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:02,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:02,898 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 [2023-12-19 12:52:02,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:02,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:02,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1355630408, now seen corresponding path program 1 times [2023-12-19 12:52:02,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500790390] [2023-12-19 12:52:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:02,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:02,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804594870] [2023-12-19 12:52:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:02,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:02,922 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) [2023-12-19 12:52:02,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 12:52:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:03,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 12:52:03,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-19 12:52:03,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:52:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500790390] [2023-12-19 12:52:03,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804594870] [2023-12-19 12:52:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804594870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:52:03,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:52:03,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:52:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448846988] [2023-12-19 12:52:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:52:03,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:52:03,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:03,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:52:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:03,396 INFO L87 Difference]: Start difference. First operand 281 states and 437 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:03,540 INFO L93 Difference]: Finished difference Result 971 states and 1506 transitions. [2023-12-19 12:52:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:52:03,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-19 12:52:03,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:03,545 INFO L225 Difference]: With dead ends: 971 [2023-12-19 12:52:03,545 INFO L226 Difference]: Without dead ends: 691 [2023-12-19 12:52:03,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:52:03,546 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 219 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:03,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 528 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:52:03,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-19 12:52:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 549. [2023-12-19 12:52:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 368 states have (on average 1.3967391304347827) internal successors, (514), 368 states have internal predecessors, (514), 168 states have call successors, (168), 12 states have call predecessors, (168), 12 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-19 12:52:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 850 transitions. [2023-12-19 12:52:03,575 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 850 transitions. Word has length 282 [2023-12-19 12:52:03,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:03,575 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 850 transitions. [2023-12-19 12:52:03,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-19 12:52:03,575 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 850 transitions. [2023-12-19 12:52:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:03,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:03,578 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:03,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:03,784 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 [2023-12-19 12:52:03,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:03,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1097464970, now seen corresponding path program 1 times [2023-12-19 12:52:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866584340] [2023-12-19 12:52:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:03,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:03,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27343690] [2023-12-19 12:52:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:03,810 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) [2023-12-19 12:52:03,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 12:52:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:04,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 12:52:04,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2023-12-19 12:52:04,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-19 12:52:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866584340] [2023-12-19 12:52:05,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27343690] [2023-12-19 12:52:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27343690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:05,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-19 12:52:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722320268] [2023-12-19 12:52:05,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 12:52:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 12:52:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-19 12:52:05,870 INFO L87 Difference]: Start difference. First operand 549 states and 850 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-19 12:52:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:07,328 INFO L93 Difference]: Finished difference Result 3333 states and 5116 transitions. [2023-12-19 12:52:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 12:52:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 282 [2023-12-19 12:52:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:07,338 INFO L225 Difference]: With dead ends: 3333 [2023-12-19 12:52:07,338 INFO L226 Difference]: Without dead ends: 2785 [2023-12-19 12:52:07,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-19 12:52:07,340 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1208 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:07,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1694 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 12:52:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2023-12-19 12:52:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2703. [2023-12-19 12:52:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1918 states have (on average 1.427528675703858) internal successors, (2738), 1926 states have internal predecessors, (2738), 720 states have call successors, (720), 64 states have call predecessors, (720), 64 states have return successors, (720), 712 states have call predecessors, (720), 720 states have call successors, (720) [2023-12-19 12:52:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4178 transitions. [2023-12-19 12:52:07,545 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4178 transitions. Word has length 282 [2023-12-19 12:52:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:07,547 INFO L495 AbstractCegarLoop]: Abstraction has 2703 states and 4178 transitions. [2023-12-19 12:52:07,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-19 12:52:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4178 transitions. [2023-12-19 12:52:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:07,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:07,550 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:07,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:07,757 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 [2023-12-19 12:52:07,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:07,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash -878610252, now seen corresponding path program 1 times [2023-12-19 12:52:07,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:07,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049869793] [2023-12-19 12:52:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:07,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:07,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082548957] [2023-12-19 12:52:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:07,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:07,789 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) [2023-12-19 12:52:07,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 12:52:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:08,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 12:52:08,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2023-12-19 12:52:08,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-19 12:52:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049869793] [2023-12-19 12:52:08,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082548957] [2023-12-19 12:52:08,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082548957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:08,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:08,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-19 12:52:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766758918] [2023-12-19 12:52:08,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:08,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 12:52:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 12:52:08,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-19 12:52:08,476 INFO L87 Difference]: Start difference. First operand 2703 states and 4178 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-19 12:52:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:08,938 INFO L93 Difference]: Finished difference Result 5549 states and 8491 transitions. [2023-12-19 12:52:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:52:08,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 282 [2023-12-19 12:52:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:08,950 INFO L225 Difference]: With dead ends: 5549 [2023-12-19 12:52:08,951 INFO L226 Difference]: Without dead ends: 2847 [2023-12-19 12:52:08,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:52:08,958 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 273 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:08,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 441 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:52:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-12-19 12:52:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2735. [2023-12-19 12:52:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 1942 states have (on average 1.411946446961895) internal successors, (2742), 1950 states have internal predecessors, (2742), 720 states have call successors, (720), 72 states have call predecessors, (720), 72 states have return successors, (720), 712 states have call predecessors, (720), 720 states have call successors, (720) [2023-12-19 12:52:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4182 transitions. [2023-12-19 12:52:09,181 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4182 transitions. Word has length 282 [2023-12-19 12:52:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:09,181 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4182 transitions. [2023-12-19 12:52:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-19 12:52:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4182 transitions. [2023-12-19 12:52:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:09,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:09,183 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:09,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:09,390 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 [2023-12-19 12:52:09,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:09,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2044549746, now seen corresponding path program 1 times [2023-12-19 12:52:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235232710] [2023-12-19 12:52:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:09,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476718302] [2023-12-19 12:52:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:09,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:09,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:09,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 12:52:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:09,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 12:52:09,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1301 proven. 93 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2023-12-19 12:52:10,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 30 proven. 93 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-19 12:52:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235232710] [2023-12-19 12:52:11,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476718302] [2023-12-19 12:52:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476718302] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:11,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-19 12:52:11,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838273825] [2023-12-19 12:52:11,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-19 12:52:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-19 12:52:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-19 12:52:11,208 INFO L87 Difference]: Start difference. First operand 2735 states and 4182 transitions. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-19 12:52:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:12,962 INFO L93 Difference]: Finished difference Result 6352 states and 9630 transitions. [2023-12-19 12:52:12,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 12:52:12,963 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 282 [2023-12-19 12:52:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:12,977 INFO L225 Difference]: With dead ends: 6352 [2023-12-19 12:52:12,977 INFO L226 Difference]: Without dead ends: 4984 [2023-12-19 12:52:12,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 12:52:12,981 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1189 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:12,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1894 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 12:52:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2023-12-19 12:52:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 3652. [2023-12-19 12:52:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2679 states have (on average 1.4270250093318402) internal successors, (3823), 2699 states have internal predecessors, (3823), 866 states have call successors, (866), 106 states have call predecessors, (866), 106 states have return successors, (866), 846 states have call predecessors, (866), 866 states have call successors, (866) [2023-12-19 12:52:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5555 transitions. [2023-12-19 12:52:13,301 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5555 transitions. Word has length 282 [2023-12-19 12:52:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:13,301 INFO L495 AbstractCegarLoop]: Abstraction has 3652 states and 5555 transitions. [2023-12-19 12:52:13,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-19 12:52:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5555 transitions. [2023-12-19 12:52:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:13,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:13,303 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:13,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:13,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 12:52:13,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:13,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:13,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1827715724, now seen corresponding path program 1 times [2023-12-19 12:52:13,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:13,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230580738] [2023-12-19 12:52:13,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:13,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:13,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:13,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182612944] [2023-12-19 12:52:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:13,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:13,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:13,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:13,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 12:52:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:14,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-19 12:52:14,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1807 proven. 600 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2023-12-19 12:52:16,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:18,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230580738] [2023-12-19 12:52:18,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182612944] [2023-12-19 12:52:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182612944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:52:18,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:52:18,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-12-19 12:52:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868935080] [2023-12-19 12:52:18,715 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:18,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 12:52:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 12:52:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 12:52:18,717 INFO L87 Difference]: Start difference. First operand 3652 states and 5555 transitions. Second operand has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-19 12:52:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:21,623 INFO L93 Difference]: Finished difference Result 11398 states and 16562 transitions. [2023-12-19 12:52:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-19 12:52:21,624 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) Word has length 282 [2023-12-19 12:52:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:21,646 INFO L225 Difference]: With dead ends: 11398 [2023-12-19 12:52:21,646 INFO L226 Difference]: Without dead ends: 7970 [2023-12-19 12:52:21,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1325, Invalid=4837, Unknown=0, NotChecked=0, Total=6162 [2023-12-19 12:52:21,655 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 837 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:21,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1124 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 12:52:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2023-12-19 12:52:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 4694. [2023-12-19 12:52:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 3471 states have (on average 1.3607029674445406) internal successors, (4723), 3491 states have internal predecessors, (4723), 930 states have call successors, (930), 292 states have call predecessors, (930), 292 states have return successors, (930), 910 states have call predecessors, (930), 930 states have call successors, (930) [2023-12-19 12:52:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6583 transitions. [2023-12-19 12:52:22,265 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6583 transitions. Word has length 282 [2023-12-19 12:52:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:22,266 INFO L495 AbstractCegarLoop]: Abstraction has 4694 states and 6583 transitions. [2023-12-19 12:52:22,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-19 12:52:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6583 transitions. [2023-12-19 12:52:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-19 12:52:22,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:22,269 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:22,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:22,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 12:52:22,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:22,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash -441512330, now seen corresponding path program 1 times [2023-12-19 12:52:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974570045] [2023-12-19 12:52:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:22,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:22,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213567191] [2023-12-19 12:52:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:22,523 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:22,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 12:52:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:52:22,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 12:52:22,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:52:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1808 proven. 453 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2023-12-19 12:52:24,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:52:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 72 proven. 171 refuted. 0 times theorem prover too weak. 3201 trivial. 0 not checked. [2023-12-19 12:52:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:52:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974570045] [2023-12-19 12:52:25,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:52:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213567191] [2023-12-19 12:52:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213567191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:52:25,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:52:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-12-19 12:52:25,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992850368] [2023-12-19 12:52:25,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:52:25,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 12:52:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:52:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 12:52:25,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2023-12-19 12:52:25,311 INFO L87 Difference]: Start difference. First operand 4694 states and 6583 transitions. Second operand has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2023-12-19 12:52:28,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:52:28,833 INFO L93 Difference]: Finished difference Result 13488 states and 19256 transitions. [2023-12-19 12:52:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-19 12:52:28,834 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) Word has length 282 [2023-12-19 12:52:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:52:28,862 INFO L225 Difference]: With dead ends: 13488 [2023-12-19 12:52:28,862 INFO L226 Difference]: Without dead ends: 9126 [2023-12-19 12:52:28,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1813, Invalid=6197, Unknown=0, NotChecked=0, Total=8010 [2023-12-19 12:52:28,878 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1564 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:52:28,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1631 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 12:52:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2023-12-19 12:52:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 4174. [2023-12-19 12:52:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 3046 states have (on average 1.340774786605384) internal successors, (4084), 3054 states have internal predecessors, (4084), 858 states have call successors, (858), 269 states have call predecessors, (858), 269 states have return successors, (858), 850 states have call predecessors, (858), 858 states have call successors, (858) [2023-12-19 12:52:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 5800 transitions. [2023-12-19 12:52:29,488 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 5800 transitions. Word has length 282 [2023-12-19 12:52:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:52:29,488 INFO L495 AbstractCegarLoop]: Abstraction has 4174 states and 5800 transitions. [2023-12-19 12:52:29,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2023-12-19 12:52:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 5800 transitions. [2023-12-19 12:52:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-19 12:52:29,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:52:29,491 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:52:29,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 12:52:29,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 12:52:29,693 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:52:29,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:52:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 843849354, now seen corresponding path program 1 times [2023-12-19 12:52:29,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:52:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871012801] [2023-12-19 12:52:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:52:29,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:52:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407570903] [2023-12-19 12:52:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:52:29,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:52:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:52:29,720 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:52:29,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 13:06:31,621 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:06:31,621 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 13:06:32,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 13:06:32,822 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-19 13:06:32,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-19 13:06:32,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 13:06:32,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 13:06:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 13:06:32,835 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 284 with TraceHistMax 42,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 13:06:32,838 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 13:06:32,840 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 13:06:32,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:06:32 BoogieIcfgContainer [2023-12-19 13:06:32,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 13:06:32,841 INFO L158 Benchmark]: Toolchain (without parser) took 876686.10ms. Allocated memory was 187.7MB in the beginning and 903.9MB in the end (delta: 716.2MB). Free memory was 148.4MB in the beginning and 365.6MB in the end (delta: -217.2MB). Peak memory consumption was 499.9MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,841 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 13:06:32,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.53ms. Allocated memory is still 187.7MB. Free memory was 148.2MB in the beginning and 123.7MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.41ms. Allocated memory is still 187.7MB. Free memory was 123.3MB in the beginning and 113.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,842 INFO L158 Benchmark]: Boogie Preprocessor took 136.40ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 113.8MB in the beginning and 190.9MB in the end (delta: -77.0MB). Peak memory consumption was 32.8MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,842 INFO L158 Benchmark]: RCFGBuilder took 670.15ms. Allocated memory is still 225.4MB. Free memory was 190.9MB in the beginning and 130.6MB in the end (delta: 60.3MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,842 INFO L158 Benchmark]: TraceAbstraction took 875458.21ms. Allocated memory was 225.4MB in the beginning and 903.9MB in the end (delta: 678.4MB). Free memory was 129.5MB in the beginning and 365.6MB in the end (delta: -236.1MB). Peak memory consumption was 441.9MB. Max. memory is 8.0GB. [2023-12-19 13:06:32,843 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory is still 143.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 336.53ms. Allocated memory is still 187.7MB. Free memory was 148.2MB in the beginning and 123.7MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 80.41ms. Allocated memory is still 187.7MB. Free memory was 123.3MB in the beginning and 113.8MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 136.40ms. Allocated memory was 187.7MB in the beginning and 225.4MB in the end (delta: 37.7MB). Free memory was 113.8MB in the beginning and 190.9MB in the end (delta: -77.0MB). Peak memory consumption was 32.8MB. Max. memory is 8.0GB. * RCFGBuilder took 670.15ms. Allocated memory is still 225.4MB. Free memory was 190.9MB in the beginning and 130.6MB in the end (delta: 60.3MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * TraceAbstraction took 875458.21ms. Allocated memory was 225.4MB in the beginning and 903.9MB in the end (delta: 678.4MB). Free memory was 129.5MB in the beginning and 365.6MB in the end (delta: -236.1MB). Peak memory consumption was 441.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 284 with TraceHistMax 42,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 875.4s, OverallIterations: 13, TraceHistogramMax: 42, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7285 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7167 mSDsluCounter, 10922 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7953 mSDsCounter, 1346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7256 IncrementalHoareTripleChecker+Invalid, 8602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1346 mSolverCounterUnsat, 2969 mSDtfsCounter, 7256 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5121 GetRequests, 4852 SyntacticMatches, 1 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4694occurred in iteration=11, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 10292 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 3663 NumberOfCodeBlocks, 3663 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4775 ConstructedInterpolants, 0 QuantifiedInterpolants, 30892 SizeOfPredicates, 75 NumberOfNonLiveVariables, 8376 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 56628/58548 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown