/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-91.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:13:21,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:13:21,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:13:21,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:13:21,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:13:21,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:13:21,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:13:21,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:13:21,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:13:21,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:13:21,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:13:21,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:13:21,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:13:21,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:13:21,423 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:13:21,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:13:21,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:13:21,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:13:21,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:13:21,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:13:21,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:13:21,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:13:21,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:13:21,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:13:21,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:13:21,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:13:21,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:13:21,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:21,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:13:21,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:13:21,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:13:21,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:13:21,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:13:21,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:13:21,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:13:21,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:13:21,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:13:21,620 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:13:21,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i [2023-12-15 21:13:22,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:13:22,804 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:13:22,805 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i [2023-12-15 21:13:22,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932de0ae8/7fc2cb74bc714e7eab6a34639266ef00/FLAGa916c6f27 [2023-12-15 21:13:22,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932de0ae8/7fc2cb74bc714e7eab6a34639266ef00 [2023-12-15 21:13:22,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:13:22,826 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:13:22,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:22,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:13:22,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:13:22,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:22" (1/1) ... [2023-12-15 21:13:22,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16dead8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:22, skipping insertion in model container [2023-12-15 21:13:22,835 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:13:22" (1/1) ... [2023-12-15 21:13:22,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:13:22,995 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-91.i[916,929] [2023-12-15 21:13:23,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:23,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:13:23,115 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-91.i[916,929] [2023-12-15 21:13:23,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:13:23,199 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:13:23,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23 WrapperNode [2023-12-15 21:13:23,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:13:23,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:23,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:13:23,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:13:23,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,277 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 519 [2023-12-15 21:13:23,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:13:23,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:13:23,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:13:23,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:13:23,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,326 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:13:23,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:13:23,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:13:23,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:13:23,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:13:23,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (1/1) ... [2023-12-15 21:13:23,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:13:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:23,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:13:23,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:13:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:13:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:13:23,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:13:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:13:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:13:23,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:13:23,522 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:13:23,523 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:13:24,160 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:13:24,191 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:13:24,192 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:13:24,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:24 BoogieIcfgContainer [2023-12-15 21:13:24,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:13:24,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:13:24,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:13:24,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:13:24,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:13:22" (1/3) ... [2023-12-15 21:13:24,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937a41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:24, skipping insertion in model container [2023-12-15 21:13:24,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:13:23" (2/3) ... [2023-12-15 21:13:24,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937a41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:13:24, skipping insertion in model container [2023-12-15 21:13:24,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:13:24" (3/3) ... [2023-12-15 21:13:24,199 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-91.i [2023-12-15 21:13:24,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:13:24,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:13:24,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:13:24,252 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;@8f8d6d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:13:24,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:13:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 134 states have (on average 1.5597014925373134) internal successors, (209), 135 states have internal predecessors, (209), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:13:24,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-15 21:13:24,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:24,278 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:24,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 289414621, now seen corresponding path program 1 times [2023-12-15 21:13:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:24,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196854628] [2023-12-15 21:13:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:24,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:24,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:24,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196854628] [2023-12-15 21:13:24,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:13:24,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479215274] [2023-12-15 21:13:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:24,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:24,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:24,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:13:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:24,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:13:24,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-15 21:13:24,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:24,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479215274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:24,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:24,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:13:24,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639093783] [2023-12-15 21:13:24,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:24,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:13:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:13:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:13:24,894 INFO L87 Difference]: Start difference. First operand has 194 states, 134 states have (on average 1.5597014925373134) internal successors, (209), 135 states have internal predecessors, (209), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:13:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:24,962 INFO L93 Difference]: Finished difference Result 384 states and 699 transitions. [2023-12-15 21:13:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:13:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 371 [2023-12-15 21:13:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:24,976 INFO L225 Difference]: With dead ends: 384 [2023-12-15 21:13:24,976 INFO L226 Difference]: Without dead ends: 191 [2023-12-15 21:13:24,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:13:24,987 INFO L413 NwaCegarLoop]: 312 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, 312 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:24,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-15 21:13:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-12-15 21:13:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 132 states have (on average 1.5227272727272727) internal successors, (201), 132 states have internal predecessors, (201), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:13:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 315 transitions. [2023-12-15 21:13:25,041 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 315 transitions. Word has length 371 [2023-12-15 21:13:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:25,042 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 315 transitions. [2023-12-15 21:13:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:13:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 315 transitions. [2023-12-15 21:13:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-15 21:13:25,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:25,051 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:25,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:25,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:13:25,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:25,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1123364153, now seen corresponding path program 1 times [2023-12-15 21:13:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:25,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950608451] [2023-12-15 21:13:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:25,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125669961] [2023-12-15 21:13:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:25,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:25,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:13:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:25,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:25,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:13:25,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:25,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950608451] [2023-12-15 21:13:25,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125669961] [2023-12-15 21:13:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125669961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:25,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509120677] [2023-12-15 21:13:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:25,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:25,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:25,625 INFO L87 Difference]: Start difference. First operand 191 states and 315 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:13:25,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:25,736 INFO L93 Difference]: Finished difference Result 562 states and 925 transitions. [2023-12-15 21:13:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:25,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 371 [2023-12-15 21:13:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:25,741 INFO L225 Difference]: With dead ends: 562 [2023-12-15 21:13:25,742 INFO L226 Difference]: Without dead ends: 372 [2023-12-15 21:13:25,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:25,744 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 286 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:25,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 745 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:13:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-15 21:13:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 242. [2023-12-15 21:13:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 183 states have (on average 1.53551912568306) internal successors, (281), 183 states have internal predecessors, (281), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:13:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 395 transitions. [2023-12-15 21:13:25,780 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 395 transitions. Word has length 371 [2023-12-15 21:13:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:25,783 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 395 transitions. [2023-12-15 21:13:25,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:13:25,784 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 395 transitions. [2023-12-15 21:13:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-12-15 21:13:25,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:25,788 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:25,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:13:25,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:25,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 390322953, now seen corresponding path program 1 times [2023-12-15 21:13:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343545470] [2023-12-15 21:13:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:26,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253129366] [2023-12-15 21:13:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:26,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:26,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:26,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:26,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:13:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:26,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:13:26,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-15 21:13:26,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:13:26,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343545470] [2023-12-15 21:13:26,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253129366] [2023-12-15 21:13:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253129366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:13:26,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:13:26,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:13:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499929281] [2023-12-15 21:13:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:13:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:13:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:13:26,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:26,306 INFO L87 Difference]: Start difference. First operand 242 states and 395 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:13:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:26,356 INFO L93 Difference]: Finished difference Result 429 states and 703 transitions. [2023-12-15 21:13:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:13:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 371 [2023-12-15 21:13:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:26,358 INFO L225 Difference]: With dead ends: 429 [2023-12-15 21:13:26,358 INFO L226 Difference]: Without dead ends: 188 [2023-12-15 21:13:26,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:13:26,359 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:26,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 273 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:13:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-15 21:13:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-15 21:13:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 129 states have (on average 1.4108527131782946) internal successors, (182), 129 states have internal predecessors, (182), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:13:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 296 transitions. [2023-12-15 21:13:26,372 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 296 transitions. Word has length 371 [2023-12-15 21:13:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:26,373 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 296 transitions. [2023-12-15 21:13:26,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-15 21:13:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 296 transitions. [2023-12-15 21:13:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-15 21:13:26,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:26,378 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:26,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:26,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:26,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:26,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1497404612, now seen corresponding path program 1 times [2023-12-15 21:13:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:26,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111772594] [2023-12-15 21:13:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:26,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:26,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656074499] [2023-12-15 21:13:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:26,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:26,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:26,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:13:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:26,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:13:26,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3590 proven. 126 refuted. 0 times theorem prover too weak. 2668 trivial. 0 not checked. [2023-12-15 21:13:27,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 153 proven. 15 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-15 21:13:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:28,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111772594] [2023-12-15 21:13:28,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:28,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656074499] [2023-12-15 21:13:28,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656074499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:28,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:28,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-15 21:13:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124146034] [2023-12-15 21:13:28,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:28,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 21:13:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 21:13:28,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:13:28,166 INFO L87 Difference]: Start difference. First operand 188 states and 296 transitions. Second operand has 17 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 5 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-15 21:13:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:29,864 INFO L93 Difference]: Finished difference Result 654 states and 1007 transitions. [2023-12-15 21:13:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-15 21:13:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 5 states have call predecessors, (96), 6 states have call successors, (96) Word has length 372 [2023-12-15 21:13:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:29,867 INFO L225 Difference]: With dead ends: 654 [2023-12-15 21:13:29,868 INFO L226 Difference]: Without dead ends: 467 [2023-12-15 21:13:29,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 733 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=586, Invalid=1576, Unknown=0, NotChecked=0, Total=2162 [2023-12-15 21:13:29,869 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1190 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:29,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1532 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 21:13:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-15 21:13:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 390. [2023-12-15 21:13:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 256 states have (on average 1.359375) internal successors, (348), 258 states have internal predecessors, (348), 126 states have call successors, (126), 7 states have call predecessors, (126), 7 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2023-12-15 21:13:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 600 transitions. [2023-12-15 21:13:29,902 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 600 transitions. Word has length 372 [2023-12-15 21:13:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:29,902 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 600 transitions. [2023-12-15 21:13:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.0) internal successors, (153), 17 states have internal predecessors, (153), 6 states have call successors, (96), 4 states have call predecessors, (96), 6 states have return successors, (96), 5 states have call predecessors, (96), 6 states have call successors, (96) [2023-12-15 21:13:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 600 transitions. [2023-12-15 21:13:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-15 21:13:29,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:29,906 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:29,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:30,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:30,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:30,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1701729417, now seen corresponding path program 1 times [2023-12-15 21:13:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:30,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553088208] [2023-12-15 21:13:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:30,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:30,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:30,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007902519] [2023-12-15 21:13:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:30,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:30,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:30,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:13:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:30,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:13:30,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2738 proven. 273 refuted. 0 times theorem prover too weak. 3373 trivial. 0 not checked. [2023-12-15 21:13:31,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 54 proven. 114 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-15 21:13:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553088208] [2023-12-15 21:13:31,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007902519] [2023-12-15 21:13:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007902519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:31,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-15 21:13:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755997901] [2023-12-15 21:13:31,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:31,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:13:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:13:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:13:31,805 INFO L87 Difference]: Start difference. First operand 390 states and 600 transitions. Second operand has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (114), 4 states have call predecessors, (114), 6 states have return successors, (114), 4 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-15 21:13:32,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:32,830 INFO L93 Difference]: Finished difference Result 1114 states and 1703 transitions. [2023-12-15 21:13:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:13:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (114), 4 states have call predecessors, (114), 6 states have return successors, (114), 4 states have call predecessors, (114), 6 states have call successors, (114) Word has length 373 [2023-12-15 21:13:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:32,841 INFO L225 Difference]: With dead ends: 1114 [2023-12-15 21:13:32,842 INFO L226 Difference]: Without dead ends: 756 [2023-12-15 21:13:32,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=183, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:13:32,847 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 786 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:32,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1842 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:13:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-15 21:13:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 638. [2023-12-15 21:13:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 423 states have (on average 1.3475177304964538) internal successors, (570), 426 states have internal predecessors, (570), 201 states have call successors, (201), 13 states have call predecessors, (201), 13 states have return successors, (201), 198 states have call predecessors, (201), 201 states have call successors, (201) [2023-12-15 21:13:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 972 transitions. [2023-12-15 21:13:32,915 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 972 transitions. Word has length 373 [2023-12-15 21:13:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:32,916 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 972 transitions. [2023-12-15 21:13:32,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.076923076923077) internal successors, (157), 14 states have internal predecessors, (157), 6 states have call successors, (114), 4 states have call predecessors, (114), 6 states have return successors, (114), 4 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-15 21:13:32,916 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 972 transitions. [2023-12-15 21:13:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-15 21:13:32,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:32,919 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:32,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:33,126 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:33,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1561558110, now seen corresponding path program 1 times [2023-12-15 21:13:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131362084] [2023-12-15 21:13:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:33,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345283275] [2023-12-15 21:13:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:33,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:33,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:33,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:33,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:13:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:33,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:13:33,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3780 proven. 267 refuted. 0 times theorem prover too weak. 2337 trivial. 0 not checked. [2023-12-15 21:13:34,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 219 proven. 276 refuted. 0 times theorem prover too weak. 5889 trivial. 0 not checked. [2023-12-15 21:13:34,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131362084] [2023-12-15 21:13:34,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345283275] [2023-12-15 21:13:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345283275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:34,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-12-15 21:13:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461584776] [2023-12-15 21:13:34,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:13:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:13:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:13:34,526 INFO L87 Difference]: Start difference. First operand 638 states and 972 transitions. Second operand has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 26 states have internal predecessors, (172), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-12-15 21:13:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:36,690 INFO L93 Difference]: Finished difference Result 1948 states and 2902 transitions. [2023-12-15 21:13:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-15 21:13:36,696 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 26 states have internal predecessors, (172), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) Word has length 373 [2023-12-15 21:13:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:36,702 INFO L225 Difference]: With dead ends: 1948 [2023-12-15 21:13:36,702 INFO L226 Difference]: Without dead ends: 1342 [2023-12-15 21:13:36,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1278, Invalid=3978, Unknown=0, NotChecked=0, Total=5256 [2023-12-15 21:13:36,705 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1466 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 3096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:36,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 2113 Invalid, 3096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 21:13:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-12-15 21:13:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 804. [2023-12-15 21:13:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 607 states have (on average 1.4168039538714992) internal successors, (860), 610 states have internal predecessors, (860), 177 states have call successors, (177), 19 states have call predecessors, (177), 19 states have return successors, (177), 174 states have call predecessors, (177), 177 states have call successors, (177) [2023-12-15 21:13:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1214 transitions. [2023-12-15 21:13:36,777 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1214 transitions. Word has length 373 [2023-12-15 21:13:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:36,778 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1214 transitions. [2023-12-15 21:13:36,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 26 states have internal predecessors, (172), 7 states have call successors, (106), 4 states have call predecessors, (106), 10 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-12-15 21:13:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1214 transitions. [2023-12-15 21:13:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-12-15 21:13:36,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:36,780 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:36,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:36,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:36,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:36,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1955924896, now seen corresponding path program 1 times [2023-12-15 21:13:36,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:36,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398300907] [2023-12-15 21:13:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:36,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:37,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853378322] [2023-12-15 21:13:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:37,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:37,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:37,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:37,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:13:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:37,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:13:37,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1185 proven. 24 refuted. 0 times theorem prover too weak. 5175 trivial. 0 not checked. [2023-12-15 21:13:37,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:13:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 306 proven. 27 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-15 21:13:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:13:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398300907] [2023-12-15 21:13:38,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:13:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853378322] [2023-12-15 21:13:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853378322] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:13:38,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:13:38,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-15 21:13:38,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354970637] [2023-12-15 21:13:38,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:13:38,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 21:13:38,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:13:38,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 21:13:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:13:38,166 INFO L87 Difference]: Start difference. First operand 804 states and 1214 transitions. Second operand has 18 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-15 21:13:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:13:40,006 INFO L93 Difference]: Finished difference Result 2350 states and 3567 transitions. [2023-12-15 21:13:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:13:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) Word has length 373 [2023-12-15 21:13:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:13:40,013 INFO L225 Difference]: With dead ends: 2350 [2023-12-15 21:13:40,013 INFO L226 Difference]: Without dead ends: 1547 [2023-12-15 21:13:40,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=539, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:13:40,015 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1055 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:13:40,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1921 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 21:13:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-12-15 21:13:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 808. [2023-12-15 21:13:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 610 states have (on average 1.4114754098360656) internal successors, (861), 613 states have internal predecessors, (861), 177 states have call successors, (177), 20 states have call predecessors, (177), 20 states have return successors, (177), 174 states have call predecessors, (177), 177 states have call successors, (177) [2023-12-15 21:13:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1215 transitions. [2023-12-15 21:13:40,088 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1215 transitions. Word has length 373 [2023-12-15 21:13:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:13:40,089 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1215 transitions. [2023-12-15 21:13:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.882352941176471) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-15 21:13:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1215 transitions. [2023-12-15 21:13:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-15 21:13:40,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:13:40,091 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:13:40,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:13:40,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:40,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:13:40,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:13:40,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2040293287, now seen corresponding path program 1 times [2023-12-15 21:13:40,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:13:40,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872469936] [2023-12-15 21:13:40,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:40,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:13:40,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:13:40,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052484075] [2023-12-15 21:13:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:13:40,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:13:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:13:40,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:13:40,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:13:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:13:40,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:13:40,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:13:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2987 proven. 264 refuted. 0 times theorem prover too weak. 3133 trivial. 0 not checked. [2023-12-15 21:13:41,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:14:27,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872469936] [2023-12-15 21:14:27,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052484075] [2023-12-15 21:14:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052484075] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:14:27,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:14:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-15 21:14:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360922372] [2023-12-15 21:14:27,129 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:14:27,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:14:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:14:27,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=287, Unknown=2, NotChecked=0, Total=342 [2023-12-15 21:14:27,130 INFO L87 Difference]: Start difference. First operand 808 states and 1215 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 3 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-15 21:14:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:31,142 INFO L93 Difference]: Finished difference Result 1655 states and 2473 transitions. [2023-12-15 21:14:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 21:14:31,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 3 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 374 [2023-12-15 21:14:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:31,154 INFO L225 Difference]: With dead ends: 1655 [2023-12-15 21:14:31,154 INFO L226 Difference]: Without dead ends: 848 [2023-12-15 21:14:31,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=192, Invalid=736, Unknown=2, NotChecked=0, Total=930 [2023-12-15 21:14:31,157 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 360 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:31,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1792 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 21:14:31,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-15 21:14:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2023-12-15 21:14:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 615 states have (on average 1.4113821138211382) internal successors, (868), 618 states have internal predecessors, (868), 175 states have call successors, (175), 21 states have call predecessors, (175), 21 states have return successors, (175), 172 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-15 21:14:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1218 transitions. [2023-12-15 21:14:31,211 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1218 transitions. Word has length 374 [2023-12-15 21:14:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:31,212 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1218 transitions. [2023-12-15 21:14:31,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 3 states have call successors, (57), 3 states have call predecessors, (57), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-12-15 21:14:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1218 transitions. [2023-12-15 21:14:31,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-12-15 21:14:31,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:31,216 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:31,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:14:31,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:14:31,422 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:31,422 INFO L85 PathProgramCache]: Analyzing trace with hash -117065253, now seen corresponding path program 1 times [2023-12-15 21:14:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311415456] [2023-12-15 21:14:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:31,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623366909] [2023-12-15 21:14:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:31,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:31,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:31,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:31,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 21:14:31,678 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:14:31,720 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:14:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:31,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 21:14:31,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:31,814 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:14:31,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:32,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:32,020 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 375 with TraceHistMax 57,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-15 21:14:32,024 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:32,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:14:32,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:14:32 BoogieIcfgContainer [2023-12-15 21:14:32,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:14:32,027 INFO L158 Benchmark]: Toolchain (without parser) took 69201.16ms. Allocated memory was 283.1MB in the beginning and 588.3MB in the end (delta: 305.1MB). Free memory was 230.7MB in the beginning and 487.7MB in the end (delta: -257.0MB). Peak memory consumption was 48.7MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,027 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 209.7MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:14:32,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.93ms. Allocated memory is still 283.1MB. Free memory was 230.2MB in the beginning and 203.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,031 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.53ms. Allocated memory is still 283.1MB. Free memory was 203.9MB in the beginning and 188.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,031 INFO L158 Benchmark]: Boogie Preprocessor took 106.72ms. Allocated memory is still 283.1MB. Free memory was 188.2MB in the beginning and 162.5MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,031 INFO L158 Benchmark]: RCFGBuilder took 807.38ms. Allocated memory is still 283.1MB. Free memory was 162.5MB in the beginning and 186.3MB in the end (delta: -23.8MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,031 INFO L158 Benchmark]: TraceAbstraction took 67833.44ms. Allocated memory was 283.1MB in the beginning and 588.3MB in the end (delta: 305.1MB). Free memory was 185.8MB in the beginning and 487.7MB in the end (delta: -301.9MB). Peak memory consumption was 3.3MB. Max. memory is 8.0GB. [2023-12-15 21:14:32,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 209.7MB. Free memory is still 161.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 372.93ms. Allocated memory is still 283.1MB. Free memory was 230.2MB in the beginning and 203.9MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.53ms. Allocated memory is still 283.1MB. Free memory was 203.9MB in the beginning and 188.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 106.72ms. Allocated memory is still 283.1MB. Free memory was 188.2MB in the beginning and 162.5MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * RCFGBuilder took 807.38ms. Allocated memory is still 283.1MB. Free memory was 162.5MB in the beginning and 186.3MB in the end (delta: -23.8MB). Peak memory consumption was 33.9MB. Max. memory is 8.0GB. * TraceAbstraction took 67833.44ms. Allocated memory was 283.1MB in the beginning and 588.3MB in the end (delta: 305.1MB). Free memory was 185.8MB in the beginning and 487.7MB in the end (delta: -301.9MB). Peak memory consumption was 3.3MB. 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 375 with TraceHistMax 57,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 194 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.8s, OverallIterations: 9, TraceHistogramMax: 57, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5577 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5423 mSDsluCounter, 10530 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8218 mSDsCounter, 2071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8978 IncrementalHoareTripleChecker+Invalid, 11049 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2071 mSolverCounterUnsat, 2312 mSDtfsCounter, 8978 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4628 GetRequests, 4438 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2532 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred in iteration=8, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1638 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 51.7s InterpolantComputationTime, 3349 NumberOfCodeBlocks, 3349 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4457 ConstructedInterpolants, 1 QuantifiedInterpolants, 19279 SizeOfPredicates, 40 NumberOfNonLiveVariables, 6899 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 75222/76608 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