/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-26.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:58:22,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:58:22,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:58:22,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:58:22,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:58:22,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:58:22,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:58:22,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:58:22,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:58:22,469 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:58:22,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:58:22,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:58:22,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:58:22,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:58:22,471 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:58:22,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:58:22,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:58:22,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:58:22,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:58:22,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:58:22,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:58:22,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:58:22,474 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:58:22,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:58:22,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:58:22,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:58:22,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:58:22,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:58:22,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:58:22,476 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:58:22,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:58:22,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:58:22,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:58:22,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:58:22,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:58:22,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:58:22,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:58:22,684 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:58:22,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-26.i [2023-12-16 03:58:23,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:58:24,121 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:58:24,122 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-26.i [2023-12-16 03:58:24,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faca4250b/7e0daf7cfa8e4a659b13e38dd25fdfc9/FLAGd1ef677d9 [2023-12-16 03:58:24,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faca4250b/7e0daf7cfa8e4a659b13e38dd25fdfc9 [2023-12-16 03:58:24,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:58:24,142 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:58:24,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:58:24,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:58:24,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:58:24,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43504d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24, skipping insertion in model container [2023-12-16 03:58:24,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:58:24,301 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-26.i[916,929] [2023-12-16 03:58:24,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:58:24,434 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:58:24,467 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-26.i[916,929] [2023-12-16 03:58:24,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:58:24,544 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:58:24,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24 WrapperNode [2023-12-16 03:58:24,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:58:24,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:58:24,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:58:24,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:58:24,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,646 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 448 [2023-12-16 03:58:24,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:58:24,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:58:24,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:58:24,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:58:24,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,703 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]. [2023-12-16 03:58:24,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:58:24,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:58:24,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:58:24,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:58:24,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (1/1) ... [2023-12-16 03:58:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:58:24,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:24,842 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) [2023-12-16 03:58:24,853 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 [2023-12-16 03:58:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:58:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:58:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:58:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:58:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:58:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:58:24,980 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:58:24,981 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:58:25,500 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:58:25,534 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:58:25,534 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:58:25,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:58:25 BoogieIcfgContainer [2023-12-16 03:58:25,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:58:25,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:58:25,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:58:25,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:58:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:58:24" (1/3) ... [2023-12-16 03:58:25,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a8b12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:58:25, skipping insertion in model container [2023-12-16 03:58:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:58:24" (2/3) ... [2023-12-16 03:58:25,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a8b12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:58:25, skipping insertion in model container [2023-12-16 03:58:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:58:25" (3/3) ... [2023-12-16 03:58:25,540 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-26.i [2023-12-16 03:58:25,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:58:25,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:58:25,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:58:25,591 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;@7bf8c02f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:58:25,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:58:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 110 states have internal predecessors, (161), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 03:58:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-16 03:58:25,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:25,610 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:25,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:25,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2060563444, now seen corresponding path program 1 times [2023-12-16 03:58:25,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517289469] [2023-12-16 03:58:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:25,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517289469] [2023-12-16 03:58:25,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:58:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139285583] [2023-12-16 03:58:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:25,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:25,830 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) [2023-12-16 03:58:25,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:58:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:26,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:58:26,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2023-12-16 03:58:26,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:26,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139285583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:26,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:26,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:58:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485445439] [2023-12-16 03:58:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:26,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:58:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:26,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:58:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:58:26,245 INFO L87 Difference]: Start difference. First operand has 171 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 110 states have internal predecessors, (161), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 03:58:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:26,290 INFO L93 Difference]: Finished difference Result 339 states and 615 transitions. [2023-12-16 03:58:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:58:26,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) Word has length 378 [2023-12-16 03:58:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:26,298 INFO L225 Difference]: With dead ends: 339 [2023-12-16 03:58:26,299 INFO L226 Difference]: Without dead ends: 169 [2023-12-16 03:58:26,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:58:26,305 INFO L413 NwaCegarLoop]: 271 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, 271 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 [2023-12-16 03:58:26,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:58:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-16 03:58:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-16 03:58:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 03:58:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 274 transitions. [2023-12-16 03:58:26,350 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 274 transitions. Word has length 378 [2023-12-16 03:58:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:26,351 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 274 transitions. [2023-12-16 03:58:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2023-12-16 03:58:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 274 transitions. [2023-12-16 03:58:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-16 03:58:26,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:26,357 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:26,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:26,564 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 [2023-12-16 03:58:26,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:26,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:26,567 INFO L85 PathProgramCache]: Analyzing trace with hash -336981494, now seen corresponding path program 1 times [2023-12-16 03:58:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:26,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866280501] [2023-12-16 03:58:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:26,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:26,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274367246] [2023-12-16 03:58:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:26,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:26,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:26,632 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) [2023-12-16 03:58:26,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:58:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:26,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:58:26,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-16 03:58:27,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866280501] [2023-12-16 03:58:27,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274367246] [2023-12-16 03:58:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274367246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:27,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:58:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35563077] [2023-12-16 03:58:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:27,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:58:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:58:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:27,048 INFO L87 Difference]: Start difference. First operand 169 states and 274 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:27,124 INFO L93 Difference]: Finished difference Result 500 states and 810 transitions. [2023-12-16 03:58:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:58:27,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 378 [2023-12-16 03:58:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:27,131 INFO L225 Difference]: With dead ends: 500 [2023-12-16 03:58:27,131 INFO L226 Difference]: Without dead ends: 332 [2023-12-16 03:58:27,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:27,133 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 238 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:27,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 525 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:58:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-16 03:58:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 202. [2023-12-16 03:58:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 141 states have (on average 1.50354609929078) internal successors, (212), 141 states have internal predecessors, (212), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 03:58:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 330 transitions. [2023-12-16 03:58:27,154 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 330 transitions. Word has length 378 [2023-12-16 03:58:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:27,155 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 330 transitions. [2023-12-16 03:58:27,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 330 transitions. [2023-12-16 03:58:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-16 03:58:27,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:27,158 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:27,365 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 [2023-12-16 03:58:27,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1504115798, now seen corresponding path program 1 times [2023-12-16 03:58:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:27,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853383271] [2023-12-16 03:58:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:27,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:27,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973270521] [2023-12-16 03:58:27,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:27,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:27,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:27,468 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) [2023-12-16 03:58:27,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:58:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:27,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:58:27,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2148 proven. 141 refuted. 0 times theorem prover too weak. 4555 trivial. 0 not checked. [2023-12-16 03:58:28,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 33 proven. 141 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-16 03:58:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853383271] [2023-12-16 03:58:28,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973270521] [2023-12-16 03:58:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973270521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:28,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 03:58:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500835628] [2023-12-16 03:58:28,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 03:58:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 03:58:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-16 03:58:28,739 INFO L87 Difference]: Start difference. First operand 202 states and 330 transitions. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) [2023-12-16 03:58:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:29,711 INFO L93 Difference]: Finished difference Result 897 states and 1478 transitions. [2023-12-16 03:58:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 03:58:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) Word has length 378 [2023-12-16 03:58:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:29,717 INFO L225 Difference]: With dead ends: 897 [2023-12-16 03:58:29,717 INFO L226 Difference]: Without dead ends: 696 [2023-12-16 03:58:29,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-12-16 03:58:29,718 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 806 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:29,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1586 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 03:58:29,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-16 03:58:29,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 404. [2023-12-16 03:58:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 282 states have (on average 1.4929078014184398) internal successors, (421), 282 states have internal predecessors, (421), 118 states have call successors, (118), 3 states have call predecessors, (118), 3 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-12-16 03:58:29,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 657 transitions. [2023-12-16 03:58:29,782 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 657 transitions. Word has length 378 [2023-12-16 03:58:29,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:29,783 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 657 transitions. [2023-12-16 03:58:29,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 4 states have call successors, (118), 3 states have call predecessors, (118), 5 states have return successors, (118), 4 states have call predecessors, (118), 4 states have call successors, (118) [2023-12-16 03:58:29,784 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 657 transitions. [2023-12-16 03:58:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2023-12-16 03:58:29,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:29,787 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:29,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:29,994 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 [2023-12-16 03:58:29,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:29,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash -610629460, now seen corresponding path program 1 times [2023-12-16 03:58:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179121380] [2023-12-16 03:58:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:30,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:30,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733369797] [2023-12-16 03:58:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:30,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:30,054 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) [2023-12-16 03:58:30,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:58:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:30,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 03:58:30,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3268 proven. 141 refuted. 0 times theorem prover too weak. 3435 trivial. 0 not checked. [2023-12-16 03:58:31,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:58:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 33 proven. 141 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2023-12-16 03:58:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179121380] [2023-12-16 03:58:32,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:32,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733369797] [2023-12-16 03:58:32,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733369797] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:58:32,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:58:32,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-12-16 03:58:32,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261913519] [2023-12-16 03:58:32,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:58:32,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 03:58:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 03:58:32,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-16 03:58:32,305 INFO L87 Difference]: Start difference. First operand 404 states and 657 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) [2023-12-16 03:58:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:33,671 INFO L93 Difference]: Finished difference Result 1169 states and 1882 transitions. [2023-12-16 03:58:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 03:58:33,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) Word has length 378 [2023-12-16 03:58:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:33,675 INFO L225 Difference]: With dead ends: 1169 [2023-12-16 03:58:33,675 INFO L226 Difference]: Without dead ends: 766 [2023-12-16 03:58:33,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=373, Invalid=887, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 03:58:33,677 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1453 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:33,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1014 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 03:58:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-16 03:58:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 754. [2023-12-16 03:58:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 544 states have (on average 1.4852941176470589) internal successors, (808), 546 states have internal predecessors, (808), 199 states have call successors, (199), 10 states have call predecessors, (199), 10 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2023-12-16 03:58:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1206 transitions. [2023-12-16 03:58:33,728 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1206 transitions. Word has length 378 [2023-12-16 03:58:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:33,728 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1206 transitions. [2023-12-16 03:58:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (118), 4 states have call predecessors, (118), 6 states have return successors, (118), 6 states have call predecessors, (118), 6 states have call successors, (118) [2023-12-16 03:58:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1206 transitions. [2023-12-16 03:58:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 03:58:33,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:33,732 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:33,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 03:58:33,939 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 [2023-12-16 03:58:33,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:33,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash -865531713, now seen corresponding path program 1 times [2023-12-16 03:58:33,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578747260] [2023-12-16 03:58:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:33,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099727827] [2023-12-16 03:58:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:33,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:33,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:34,007 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) [2023-12-16 03:58:34,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:58:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:34,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 03:58:34,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-16 03:58:34,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:34,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:34,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578747260] [2023-12-16 03:58:34,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099727827] [2023-12-16 03:58:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099727827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:58:34,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055196374] [2023-12-16 03:58:34,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:58:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:58:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:58:34,376 INFO L87 Difference]: Start difference. First operand 754 states and 1206 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:34,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:34,719 INFO L93 Difference]: Finished difference Result 2106 states and 3347 transitions. [2023-12-16 03:58:34,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 03:58:34,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2023-12-16 03:58:34,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:34,726 INFO L225 Difference]: With dead ends: 2106 [2023-12-16 03:58:34,726 INFO L226 Difference]: Without dead ends: 1609 [2023-12-16 03:58:34,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:58:34,731 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 422 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:34,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1266 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 03:58:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-12-16 03:58:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1356. [2023-12-16 03:58:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1043 states have (on average 1.5177372962607862) internal successors, (1583), 1049 states have internal predecessors, (1583), 295 states have call successors, (295), 17 states have call predecessors, (295), 17 states have return successors, (295), 289 states have call predecessors, (295), 295 states have call successors, (295) [2023-12-16 03:58:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2173 transitions. [2023-12-16 03:58:34,806 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2173 transitions. Word has length 379 [2023-12-16 03:58:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:34,807 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 2173 transitions. [2023-12-16 03:58:34,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2173 transitions. [2023-12-16 03:58:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 03:58:34,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:34,810 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:34,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 03:58:35,016 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 [2023-12-16 03:58:35,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:35,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash -595790687, now seen corresponding path program 1 times [2023-12-16 03:58:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905067504] [2023-12-16 03:58:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:35,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749560693] [2023-12-16 03:58:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:35,048 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) [2023-12-16 03:58:35,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 03:58:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:35,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 03:58:35,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-16 03:58:35,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:35,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905067504] [2023-12-16 03:58:35,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:35,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749560693] [2023-12-16 03:58:35,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749560693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:35,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:35,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 03:58:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105896986] [2023-12-16 03:58:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:35,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:58:35,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:58:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:35,310 INFO L87 Difference]: Start difference. First operand 1356 states and 2173 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:35,435 INFO L93 Difference]: Finished difference Result 2830 states and 4475 transitions. [2023-12-16 03:58:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:58:35,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2023-12-16 03:58:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:35,443 INFO L225 Difference]: With dead ends: 2830 [2023-12-16 03:58:35,443 INFO L226 Difference]: Without dead ends: 1903 [2023-12-16 03:58:35,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:35,445 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 238 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:35,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 776 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:58:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2023-12-16 03:58:35,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1356. [2023-12-16 03:58:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1043 states have (on average 1.5023969319271333) internal successors, (1567), 1049 states have internal predecessors, (1567), 295 states have call successors, (295), 17 states have call predecessors, (295), 17 states have return successors, (295), 289 states have call predecessors, (295), 295 states have call successors, (295) [2023-12-16 03:58:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2157 transitions. [2023-12-16 03:58:35,516 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2157 transitions. Word has length 379 [2023-12-16 03:58:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:35,517 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 2157 transitions. [2023-12-16 03:58:35,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:35,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2157 transitions. [2023-12-16 03:58:35,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 03:58:35,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:35,520 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:35,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 03:58:35,726 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 [2023-12-16 03:58:35,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:35,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1183856129, now seen corresponding path program 1 times [2023-12-16 03:58:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348285204] [2023-12-16 03:58:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:35,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036821542] [2023-12-16 03:58:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:35,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:35,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:35,779 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) [2023-12-16 03:58:35,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 03:58:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:36,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:58:36,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:58:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2023-12-16 03:58:36,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:58:36,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:58:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348285204] [2023-12-16 03:58:36,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:58:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036821542] [2023-12-16 03:58:36,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036821542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:58:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:58:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:58:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215615066] [2023-12-16 03:58:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:58:36,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:58:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:58:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:58:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:36,356 INFO L87 Difference]: Start difference. First operand 1356 states and 2157 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:58:36,493 INFO L93 Difference]: Finished difference Result 3710 states and 5907 transitions. [2023-12-16 03:58:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:58:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2023-12-16 03:58:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:58:36,502 INFO L225 Difference]: With dead ends: 3710 [2023-12-16 03:58:36,502 INFO L226 Difference]: Without dead ends: 2549 [2023-12-16 03:58:36,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:58:36,506 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 100 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:58:36,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 519 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:58:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2023-12-16 03:58:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2547. [2023-12-16 03:58:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1984 states have (on average 1.4944556451612903) internal successors, (2965), 1996 states have internal predecessors, (2965), 531 states have call successors, (531), 31 states have call predecessors, (531), 31 states have return successors, (531), 519 states have call predecessors, (531), 531 states have call successors, (531) [2023-12-16 03:58:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 4027 transitions. [2023-12-16 03:58:36,640 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 4027 transitions. Word has length 379 [2023-12-16 03:58:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:58:36,640 INFO L495 AbstractCegarLoop]: Abstraction has 2547 states and 4027 transitions. [2023-12-16 03:58:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2023-12-16 03:58:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 4027 transitions. [2023-12-16 03:58:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-12-16 03:58:36,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:58:36,643 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:58:36,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 03:58:36,851 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 [2023-12-16 03:58:36,851 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:58:36,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:58:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash -28159107, now seen corresponding path program 1 times [2023-12-16 03:58:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:58:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547398133] [2023-12-16 03:58:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:58:36,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:58:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602869121] [2023-12-16 03:58:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:58:36,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:58:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:58:36,949 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) [2023-12-16 03:58:36,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 03:58:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:58:37,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 03:58:37,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 03:59:20,150 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 [2023-12-16 03:59:20,150 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:59:21,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 03:59:21,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown