/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-91.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:02:55,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:02:55,780 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 04:02:55,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:02:55,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:02:55,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:02:55,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:02:55,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:02:55,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:02:55,817 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:02:55,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:02:55,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:02:55,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:02:55,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:02:55,820 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:02:55,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:02:55,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:02:55,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:02:55,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:02:55,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:02:55,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:02:55,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:02:55,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:02:55,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:02:55,824 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:02:55,824 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:02:55,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:02:55,824 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:02:55,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:02:55,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:02:55,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:02:55,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:02:55,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:02:55,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:02:55,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:02:55,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:02:55,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:02:55,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:02:55,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:02:55,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:02:55,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:02:55,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:02:55,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:02:55,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:02:56,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:02:56,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:02:56,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:02:56,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:02:56,081 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:02:56,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i [2023-12-16 04:02:57,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:02:57,478 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:02:57,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i [2023-12-16 04:02:57,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec72c6d5/d79e5d1d786d49578a25fedc1e4df6d2/FLAGdfbd93fe5 [2023-12-16 04:02:57,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bec72c6d5/d79e5d1d786d49578a25fedc1e4df6d2 [2023-12-16 04:02:57,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:02:57,507 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:02:57,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:02:57,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:02:57,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:02:57,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:57,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56282e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57, skipping insertion in model container [2023-12-16 04:02:57,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:57,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:02:57,707 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i[916,929] [2023-12-16 04:02:57,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:02:57,901 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:02:57,910 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-91.i[916,929] [2023-12-16 04:02:57,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:02:57,982 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:02:57,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57 WrapperNode [2023-12-16 04:02:57,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:02:57,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:02:57,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:02:57,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:02:57,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,130 INFO L138 Inliner]: procedures = 26, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 431 [2023-12-16 04:02:58,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:02:58,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:02:58,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:02:58,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:02:58,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,230 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 04:02:58,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:02:58,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:02:58,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:02:58,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:02:58,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (1/1) ... [2023-12-16 04:02:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:02:58,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:02:58,328 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 04:02:58,344 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 04:02:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:02:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:02:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:02:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:02:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:02:58,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:02:58,453 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:02:58,456 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:02:59,159 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:02:59,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:02:59,204 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:02:59,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:02:59 BoogieIcfgContainer [2023-12-16 04:02:59,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:02:59,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:02:59,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:02:59,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:02:59,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:02:57" (1/3) ... [2023-12-16 04:02:59,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7854e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:02:59, skipping insertion in model container [2023-12-16 04:02:59,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:02:57" (2/3) ... [2023-12-16 04:02:59,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7854e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:02:59, skipping insertion in model container [2023-12-16 04:02:59,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:02:59" (3/3) ... [2023-12-16 04:02:59,235 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-91.i [2023-12-16 04:02:59,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:02:59,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:02:59,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:02:59,300 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;@1c0b5cb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:02:59,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:02:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 103 states have (on average 1.4757281553398058) internal successors, (152), 104 states have internal predecessors, (152), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 04:02:59,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 04:02:59,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:02:59,348 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:02:59,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:02:59,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:02:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 801848019, now seen corresponding path program 1 times [2023-12-16 04:02:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:02:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13056411] [2023-12-16 04:02:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:02:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:02:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:02:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:02:59,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13056411] [2023-12-16 04:02:59,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 04:02:59,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305577106] [2023-12-16 04:02:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:02:59,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:02:59,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:02:59,664 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 04:02:59,686 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 04:02:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:02:59,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 04:02:59,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2023-12-16 04:03:00,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:03:00,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305577106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:03:00,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:03:00,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:03:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484062152] [2023-12-16 04:03:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:03:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:03:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:03:00,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:03:00,089 INFO L87 Difference]: Start difference. First operand has 163 states, 103 states have (on average 1.4757281553398058) internal successors, (152), 104 states have internal predecessors, (152), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-16 04:03:00,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:00,181 INFO L93 Difference]: Finished difference Result 322 states and 585 transitions. [2023-12-16 04:03:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:03:00,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) Word has length 364 [2023-12-16 04:03:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:00,195 INFO L225 Difference]: With dead ends: 322 [2023-12-16 04:03:00,196 INFO L226 Difference]: Without dead ends: 160 [2023-12-16 04:03:00,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 363 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 04:03:00,209 INFO L413 NwaCegarLoop]: 255 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, 255 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 04:03:00,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:03:00,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-16 04:03:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-16 04:03:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 101 states have internal predecessors, (144), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 04:03:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 258 transitions. [2023-12-16 04:03:00,282 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 258 transitions. Word has length 364 [2023-12-16 04:03:00,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:00,283 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 258 transitions. [2023-12-16 04:03:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-16 04:03:00,284 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 258 transitions. [2023-12-16 04:03:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 04:03:00,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:00,293 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:00,303 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 04:03:00,499 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 04:03:00,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:00,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1109927639, now seen corresponding path program 1 times [2023-12-16 04:03:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580137759] [2023-12-16 04:03:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:00,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121667440] [2023-12-16 04:03:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:00,637 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 04:03:00,657 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 04:03:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:00,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:03:00,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-16 04:03:00,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:03:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:03:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580137759] [2023-12-16 04:03:00,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:03:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121667440] [2023-12-16 04:03:00,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121667440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:03:00,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:03:00,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:03:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234822361] [2023-12-16 04:03:00,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:03:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:03:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:03:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:03:00,973 INFO L87 Difference]: Start difference. First operand 160 states and 258 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 04:03:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:01,109 INFO L93 Difference]: Finished difference Result 469 states and 754 transitions. [2023-12-16 04:03:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:03:01,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 364 [2023-12-16 04:03:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:01,117 INFO L225 Difference]: With dead ends: 469 [2023-12-16 04:03:01,117 INFO L226 Difference]: Without dead ends: 310 [2023-12-16 04:03:01,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 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 04:03:01,121 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 229 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:03:01,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 630 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:03:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-16 04:03:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 200. [2023-12-16 04:03:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 141 states have (on average 1.425531914893617) internal successors, (201), 141 states have internal predecessors, (201), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 04:03:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 315 transitions. [2023-12-16 04:03:01,168 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 315 transitions. Word has length 364 [2023-12-16 04:03:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:01,171 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 315 transitions. [2023-12-16 04:03:01,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 04:03:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 315 transitions. [2023-12-16 04:03:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 04:03:01,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:01,175 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:01,184 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 04:03:01,383 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 04:03:01,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:01,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1996048601, now seen corresponding path program 1 times [2023-12-16 04:03:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343978659] [2023-12-16 04:03:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:01,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:01,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833810641] [2023-12-16 04:03:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:01,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:01,464 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 04:03:01,484 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 04:03:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:01,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 04:03:01,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-16 04:03:01,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:03:01,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:03:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343978659] [2023-12-16 04:03:01,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:03:01,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833810641] [2023-12-16 04:03:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833810641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:03:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:03:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:03:01,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961886263] [2023-12-16 04:03:01,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:03:01,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:03:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:01,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:03:01,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:03:01,781 INFO L87 Difference]: Start difference. First operand 200 states and 315 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 04:03:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:01,860 INFO L93 Difference]: Finished difference Result 356 states and 566 transitions. [2023-12-16 04:03:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:03:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 364 [2023-12-16 04:03:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:01,864 INFO L225 Difference]: With dead ends: 356 [2023-12-16 04:03:01,864 INFO L226 Difference]: Without dead ends: 157 [2023-12-16 04:03:01,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 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 04:03:01,867 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:03:01,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 217 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:03:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-16 04:03:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-16 04:03:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 04:03:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2023-12-16 04:03:01,903 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 364 [2023-12-16 04:03:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:01,905 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2023-12-16 04:03:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 04:03:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2023-12-16 04:03:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-12-16 04:03:01,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:01,910 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:01,925 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 04:03:02,123 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 04:03:02,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:02,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1436156172, now seen corresponding path program 1 times [2023-12-16 04:03:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381722154] [2023-12-16 04:03:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:02,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:02,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921578862] [2023-12-16 04:03:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:02,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:02,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:02,186 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 04:03:02,202 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 04:03:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:02,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:03:02,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1185 proven. 24 refuted. 0 times theorem prover too weak. 5175 trivial. 0 not checked. [2023-12-16 04:03:03,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:03:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 306 proven. 27 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-16 04:03:03,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:03:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381722154] [2023-12-16 04:03:03,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:03:03,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921578862] [2023-12-16 04:03:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921578862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:03:03,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:03:03,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-16 04:03:03,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099531987] [2023-12-16 04:03:03,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:03:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:03:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:03:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:03:03,822 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand has 18 states, 17 states have (on average 9.294117647058824) internal successors, (158), 16 states have internal predecessors, (158), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-16 04:03:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:05,797 INFO L93 Difference]: Finished difference Result 661 states and 1002 transitions. [2023-12-16 04:03:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:03:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.294117647058824) internal successors, (158), 16 states have internal predecessors, (158), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) Word has length 365 [2023-12-16 04:03:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:05,803 INFO L225 Difference]: With dead ends: 661 [2023-12-16 04:03:05,803 INFO L226 Difference]: Without dead ends: 505 [2023-12-16 04:03:05,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=539, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:03:05,805 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 548 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 04:03:05,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1576 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 04:03:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-16 04:03:05,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 318. [2023-12-16 04:03:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 199 states have (on average 1.2613065326633166) internal successors, (251), 199 states have internal predecessors, (251), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-12-16 04:03:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 479 transitions. [2023-12-16 04:03:05,875 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 479 transitions. Word has length 365 [2023-12-16 04:03:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:05,876 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 479 transitions. [2023-12-16 04:03:05,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.294117647058824) internal successors, (158), 16 states have internal predecessors, (158), 6 states have call successors, (114), 4 states have call predecessors, (114), 7 states have return successors, (114), 6 states have call predecessors, (114), 6 states have call successors, (114) [2023-12-16 04:03:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 479 transitions. [2023-12-16 04:03:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-16 04:03:05,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:05,880 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:05,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:03:06,088 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 04:03:06,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:06,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 297549675, now seen corresponding path program 1 times [2023-12-16 04:03:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710721812] [2023-12-16 04:03:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:06,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196828011] [2023-12-16 04:03:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:06,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:06,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:06,154 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 04:03:06,157 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 04:03:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:06,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:03:06,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2804 proven. 381 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-12-16 04:03:07,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:03:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 96 proven. 237 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-16 04:03:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:03:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710721812] [2023-12-16 04:03:08,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:03:08,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196828011] [2023-12-16 04:03:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196828011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:03:08,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:03:08,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-16 04:03:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899527155] [2023-12-16 04:03:08,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:03:08,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:03:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:03:08,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:03:08,221 INFO L87 Difference]: Start difference. First operand 318 states and 479 transitions. Second operand has 21 states, 20 states have (on average 8.2) internal successors, (164), 19 states have internal predecessors, (164), 6 states have call successors, (108), 4 states have call predecessors, (108), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-12-16 04:03:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:09,770 INFO L93 Difference]: Finished difference Result 1066 states and 1551 transitions. [2023-12-16 04:03:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 04:03:09,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.2) internal successors, (164), 19 states have internal predecessors, (164), 6 states have call successors, (108), 4 states have call predecessors, (108), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) Word has length 366 [2023-12-16 04:03:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:09,775 INFO L225 Difference]: With dead ends: 1066 [2023-12-16 04:03:09,775 INFO L226 Difference]: Without dead ends: 749 [2023-12-16 04:03:09,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=2267, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 04:03:09,778 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 435 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:03:09,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1341 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:03:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-16 04:03:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 697. [2023-12-16 04:03:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 444 states have (on average 1.2297297297297298) internal successors, (546), 444 states have internal predecessors, (546), 228 states have call successors, (228), 24 states have call predecessors, (228), 24 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-16 04:03:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1002 transitions. [2023-12-16 04:03:09,889 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1002 transitions. Word has length 366 [2023-12-16 04:03:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:09,890 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1002 transitions. [2023-12-16 04:03:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.2) internal successors, (164), 19 states have internal predecessors, (164), 6 states have call successors, (108), 4 states have call predecessors, (108), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-12-16 04:03:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1002 transitions. [2023-12-16 04:03:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-12-16 04:03:09,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:09,896 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:09,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:03:10,103 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 04:03:10,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:10,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 163536169, now seen corresponding path program 1 times [2023-12-16 04:03:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349730203] [2023-12-16 04:03:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:10,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480247019] [2023-12-16 04:03:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:10,153 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 04:03:10,172 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 04:03:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:10,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-16 04:03:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 4432 proven. 705 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2023-12-16 04:03:15,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:03:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:03:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349730203] [2023-12-16 04:03:43,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:03:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480247019] [2023-12-16 04:03:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480247019] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:03:43,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:03:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2023-12-16 04:03:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873750110] [2023-12-16 04:03:43,866 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:03:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 04:03:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:03:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 04:03:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=1708, Unknown=3, NotChecked=0, Total=2352 [2023-12-16 04:03:43,869 INFO L87 Difference]: Start difference. First operand 697 states and 1002 transitions. Second operand has 35 states, 35 states have (on average 3.6) internal successors, (126), 31 states have internal predecessors, (126), 11 states have call successors, (57), 11 states have call predecessors, (57), 15 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) [2023-12-16 04:03:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:03:45,999 INFO L93 Difference]: Finished difference Result 1691 states and 2312 transitions. [2023-12-16 04:03:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 04:03:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6) internal successors, (126), 31 states have internal predecessors, (126), 11 states have call successors, (57), 11 states have call predecessors, (57), 15 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) Word has length 366 [2023-12-16 04:03:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:03:46,007 INFO L225 Difference]: With dead ends: 1691 [2023-12-16 04:03:46,007 INFO L226 Difference]: Without dead ends: 995 [2023-12-16 04:03:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=1147, Invalid=2882, Unknown=3, NotChecked=0, Total=4032 [2023-12-16 04:03:46,012 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 398 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:03:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1126 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 04:03:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-12-16 04:03:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 857. [2023-12-16 04:03:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 564 states have (on average 1.173758865248227) internal successors, (662), 564 states have internal predecessors, (662), 228 states have call successors, (228), 64 states have call predecessors, (228), 64 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-12-16 04:03:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1118 transitions. [2023-12-16 04:03:46,112 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1118 transitions. Word has length 366 [2023-12-16 04:03:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:03:46,112 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1118 transitions. [2023-12-16 04:03:46,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6) internal successors, (126), 31 states have internal predecessors, (126), 11 states have call successors, (57), 11 states have call predecessors, (57), 15 states have return successors, (57), 11 states have call predecessors, (57), 11 states have call successors, (57) [2023-12-16 04:03:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1118 transitions. [2023-12-16 04:03:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-16 04:03:46,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:03:46,115 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:03:46,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:03:46,324 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 04:03:46,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:03:46,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:03:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash 869382038, now seen corresponding path program 1 times [2023-12-16 04:03:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:03:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644502500] [2023-12-16 04:03:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:03:46,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:03:46,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098090124] [2023-12-16 04:03:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:03:46,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:03:46,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:03:46,365 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 04:03:46,372 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 04:03:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:03:47,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-16 04:03:47,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:03:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 3537 proven. 912 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2023-12-16 04:03:56,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 04:03:58,004 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:03:58,004 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 04:03:59,200 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 04:03:59,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown