/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-32.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:14:44,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:14:44,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:14:44,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:14:44,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:14:44,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:14:44,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:14:44,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:14:44,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:14:44,461 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:14:44,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:14:44,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:14:44,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:14:44,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:14:44,464 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:14:44,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:14:44,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:14:44,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:14:44,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:14:44,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:14:44,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:14:44,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:14:44,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:14:44,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:14:44,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:14:44,466 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:14:44,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:14:44,466 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:14:44,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:14:44,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:14:44,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:14:44,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:14:44,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:14:44,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:14:44,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:14:44,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:14:44,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:14:44,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:14:44,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:14:44,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:14:44,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:14:44,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:14:44,758 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:14:44,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-32.i [2023-12-15 21:14:46,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:14:46,256 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:14:46,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-32.i [2023-12-15 21:14:46,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71339070/5d92ed1400e0497b85fd89e4c5ababfe/FLAGd617025f5 [2023-12-15 21:14:46,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b71339070/5d92ed1400e0497b85fd89e4c5ababfe [2023-12-15 21:14:46,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:14:46,293 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:14:46,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:14:46,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:14:46,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:14:46,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db1be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46, skipping insertion in model container [2023-12-15 21:14:46,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:14:46,485 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_amount25_file-32.i[915,928] [2023-12-15 21:14:46,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:14:46,556 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:14:46,573 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_amount25_file-32.i[915,928] [2023-12-15 21:14:46,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:14:46,634 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:14:46,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46 WrapperNode [2023-12-15 21:14:46,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:14:46,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:14:46,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:14:46,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:14:46,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,697 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2023-12-15 21:14:46,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:14:46,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:14:46,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:14:46,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:14:46,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,747 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:14:46,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:14:46,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:14:46,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:14:46,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:14:46,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (1/1) ... [2023-12-15 21:14:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:14:46,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:46,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:14:46,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:14:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:14:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:14:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:14:46,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:14:46,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:14:46,912 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:14:46,914 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:14:47,311 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:14:47,339 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:14:47,339 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:14:47,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:14:47 BoogieIcfgContainer [2023-12-15 21:14:47,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:14:47,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:14:47,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:14:47,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:14:47,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:14:46" (1/3) ... [2023-12-15 21:14:47,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be2bf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:14:47, skipping insertion in model container [2023-12-15 21:14:47,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:14:46" (2/3) ... [2023-12-15 21:14:47,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be2bf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:14:47, skipping insertion in model container [2023-12-15 21:14:47,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:14:47" (3/3) ... [2023-12-15 21:14:47,360 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-32.i [2023-12-15 21:14:47,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:14:47,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:14:47,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:14:47,434 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;@8f4833b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:14:47,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:14:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 47 states have internal predecessors, (73), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-15 21:14:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 21:14:47,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:47,449 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:47,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:47,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash 741293709, now seen corresponding path program 1 times [2023-12-15 21:14:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605204413] [2023-12-15 21:14:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605204413] [2023-12-15 21:14:47,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:14:47,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905732774] [2023-12-15 21:14:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:47,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:47,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:47,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:47,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:14:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:47,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:14:47,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:47,865 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-15 21:14:47,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:47,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905732774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:47,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:47,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:14:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845655180] [2023-12-15 21:14:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:14:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:14:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:14:47,908 INFO L87 Difference]: Start difference. First operand has 65 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 47 states have internal predecessors, (73), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-15 21:14:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:47,948 INFO L93 Difference]: Finished difference Result 127 states and 224 transitions. [2023-12-15 21:14:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:14:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2023-12-15 21:14:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:47,962 INFO L225 Difference]: With dead ends: 127 [2023-12-15 21:14:47,963 INFO L226 Difference]: Without dead ends: 63 [2023-12-15 21:14:47,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:14:47,974 INFO L413 NwaCegarLoop]: 97 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, 97 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:47,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:14:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-15 21:14:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-15 21:14:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.511111111111111) internal successors, (68), 45 states have internal predecessors, (68), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-15 21:14:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 100 transitions. [2023-12-15 21:14:48,028 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 100 transitions. Word has length 106 [2023-12-15 21:14:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:48,028 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 100 transitions. [2023-12-15 21:14:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-15 21:14:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 100 transitions. [2023-12-15 21:14:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 21:14:48,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:48,032 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:48,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:14:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:14:48,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:48,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1318870669, now seen corresponding path program 1 times [2023-12-15 21:14:48,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:48,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386825044] [2023-12-15 21:14:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:48,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:48,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363565528] [2023-12-15 21:14:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:48,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:14:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:48,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:14:48,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 194 proven. 9 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-12-15 21:14:48,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:14:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 75 proven. 12 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-15 21:14:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386825044] [2023-12-15 21:14:48,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363565528] [2023-12-15 21:14:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363565528] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:14:48,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:14:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-12-15 21:14:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824496562] [2023-12-15 21:14:48,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:14:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:14:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:14:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:14:48,880 INFO L87 Difference]: Start difference. First operand 63 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-15 21:14:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:49,138 INFO L93 Difference]: Finished difference Result 135 states and 207 transitions. [2023-12-15 21:14:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:14:49,139 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 106 [2023-12-15 21:14:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:49,140 INFO L225 Difference]: With dead ends: 135 [2023-12-15 21:14:49,140 INFO L226 Difference]: Without dead ends: 73 [2023-12-15 21:14:49,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:14:49,143 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 199 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:49,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 203 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:14:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-15 21:14:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-12-15 21:14:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-15 21:14:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2023-12-15 21:14:49,156 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 106 [2023-12-15 21:14:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:49,157 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2023-12-15 21:14:49,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-15 21:14:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2023-12-15 21:14:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 21:14:49,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:49,159 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:49,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:49,365 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 [2023-12-15 21:14:49,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:49,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1051141791, now seen corresponding path program 1 times [2023-12-15 21:14:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918749973] [2023-12-15 21:14:49,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:49,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:49,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754330703] [2023-12-15 21:14:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:49,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:49,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:49,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:14:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:49,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:14:49,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:49,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918749973] [2023-12-15 21:14:49,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754330703] [2023-12-15 21:14:49,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754330703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:49,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:49,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:14:49,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376358656] [2023-12-15 21:14:49,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:49,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:14:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:14:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:14:49,635 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:49,753 INFO L93 Difference]: Finished difference Result 239 states and 354 transitions. [2023-12-15 21:14:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:14:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2023-12-15 21:14:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:49,758 INFO L225 Difference]: With dead ends: 239 [2023-12-15 21:14:49,758 INFO L226 Difference]: Without dead ends: 169 [2023-12-15 21:14:49,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:14:49,760 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 114 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:49,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 314 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:14:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-15 21:14:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2023-12-15 21:14:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.41) internal successors, (141), 100 states have internal predecessors, (141), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 21:14:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 205 transitions. [2023-12-15 21:14:49,783 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 205 transitions. Word has length 107 [2023-12-15 21:14:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:49,784 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 205 transitions. [2023-12-15 21:14:49,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 205 transitions. [2023-12-15 21:14:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 21:14:49,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:49,786 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:49,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:49,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:49,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:49,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1655477603, now seen corresponding path program 1 times [2023-12-15 21:14:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087903927] [2023-12-15 21:14:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:50,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666756804] [2023-12-15 21:14:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:50,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:50,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:14:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:50,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:14:50,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:50,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:50,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087903927] [2023-12-15 21:14:50,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:50,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666756804] [2023-12-15 21:14:50,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666756804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:50,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:50,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:14:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746436862] [2023-12-15 21:14:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:14:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:50,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:14:50,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:14:50,371 INFO L87 Difference]: Start difference. First operand 139 states and 205 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:50,506 INFO L93 Difference]: Finished difference Result 362 states and 544 transitions. [2023-12-15 21:14:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:14:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2023-12-15 21:14:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:50,508 INFO L225 Difference]: With dead ends: 362 [2023-12-15 21:14:50,509 INFO L226 Difference]: Without dead ends: 224 [2023-12-15 21:14:50,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:14:50,514 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 113 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:50,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 359 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:14:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-15 21:14:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 161. [2023-12-15 21:14:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 122 states have (on average 1.4672131147540983) internal successors, (179), 122 states have internal predecessors, (179), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 21:14:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 243 transitions. [2023-12-15 21:14:50,557 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 243 transitions. Word has length 107 [2023-12-15 21:14:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:50,558 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 243 transitions. [2023-12-15 21:14:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 243 transitions. [2023-12-15 21:14:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 21:14:50,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:50,565 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:50,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:50,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:50,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:50,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1913643041, now seen corresponding path program 1 times [2023-12-15 21:14:50,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:50,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697404014] [2023-12-15 21:14:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:50,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:50,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627379951] [2023-12-15 21:14:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:50,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:50,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:50,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:50,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:14:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:50,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:14:50,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:50,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697404014] [2023-12-15 21:14:50,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627379951] [2023-12-15 21:14:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627379951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:14:50,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732953871] [2023-12-15 21:14:50,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:14:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:50,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:14:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:50,914 INFO L87 Difference]: Start difference. First operand 161 states and 243 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:50,953 INFO L93 Difference]: Finished difference Result 387 states and 585 transitions. [2023-12-15 21:14:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:14:50,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2023-12-15 21:14:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:50,955 INFO L225 Difference]: With dead ends: 387 [2023-12-15 21:14:50,955 INFO L226 Difference]: Without dead ends: 227 [2023-12-15 21:14:50,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:50,957 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:50,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 187 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:14:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-15 21:14:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2023-12-15 21:14:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 170 states have (on average 1.4588235294117646) internal successors, (248), 172 states have internal predecessors, (248), 44 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 21:14:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 336 transitions. [2023-12-15 21:14:50,997 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 336 transitions. Word has length 107 [2023-12-15 21:14:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:50,998 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 336 transitions. [2023-12-15 21:14:50,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 336 transitions. [2023-12-15 21:14:51,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-15 21:14:51,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:51,002 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:51,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:51,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:51,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash -186595857, now seen corresponding path program 1 times [2023-12-15 21:14:51,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:51,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372153716] [2023-12-15 21:14:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:51,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:51,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118097615] [2023-12-15 21:14:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:51,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:51,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:51,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:14:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:51,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:14:51,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:51,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372153716] [2023-12-15 21:14:51,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118097615] [2023-12-15 21:14:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118097615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:51,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:14:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113836061] [2023-12-15 21:14:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:14:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:14:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:14:51,431 INFO L87 Difference]: Start difference. First operand 223 states and 336 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:51,499 INFO L93 Difference]: Finished difference Result 467 states and 701 transitions. [2023-12-15 21:14:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:14:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2023-12-15 21:14:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:51,502 INFO L225 Difference]: With dead ends: 467 [2023-12-15 21:14:51,503 INFO L226 Difference]: Without dead ends: 245 [2023-12-15 21:14:51,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:14:51,504 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 100 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:51,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 348 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:14:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-15 21:14:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 219. [2023-12-15 21:14:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 166 states have (on average 1.4397590361445782) internal successors, (239), 168 states have internal predecessors, (239), 44 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 21:14:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 327 transitions. [2023-12-15 21:14:51,531 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 327 transitions. Word has length 108 [2023-12-15 21:14:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:51,531 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 327 transitions. [2023-12-15 21:14:51,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 327 transitions. [2023-12-15 21:14:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:14:51,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:51,533 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:51,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:51,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:51,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:51,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash -24916850, now seen corresponding path program 1 times [2023-12-15 21:14:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408205356] [2023-12-15 21:14:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:51,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:51,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247829327] [2023-12-15 21:14:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:51,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:51,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:51,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:14:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:51,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:14:51,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:51,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:51,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408205356] [2023-12-15 21:14:51,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:51,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247829327] [2023-12-15 21:14:51,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247829327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:51,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:51,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:14:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146538540] [2023-12-15 21:14:51,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:51,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:14:51,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:14:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:51,874 INFO L87 Difference]: Start difference. First operand 219 states and 327 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:51,915 INFO L93 Difference]: Finished difference Result 518 states and 785 transitions. [2023-12-15 21:14:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:14:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 111 [2023-12-15 21:14:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:51,917 INFO L225 Difference]: With dead ends: 518 [2023-12-15 21:14:51,918 INFO L226 Difference]: Without dead ends: 313 [2023-12-15 21:14:51,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:51,919 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:51,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 175 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:14:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-15 21:14:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 258. [2023-12-15 21:14:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 205 states have (on average 1.4878048780487805) internal successors, (305), 207 states have internal predecessors, (305), 44 states have call successors, (44), 8 states have call predecessors, (44), 8 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 21:14:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 393 transitions. [2023-12-15 21:14:51,942 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 393 transitions. Word has length 111 [2023-12-15 21:14:51,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:51,943 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 393 transitions. [2023-12-15 21:14:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 393 transitions. [2023-12-15 21:14:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:14:51,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:51,945 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:51,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:52,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:52,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:52,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash 655141520, now seen corresponding path program 1 times [2023-12-15 21:14:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243362731] [2023-12-15 21:14:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:52,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:52,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447950834] [2023-12-15 21:14:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:52,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:52,171 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:52,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:14:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:52,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 21:14:52,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-15 21:14:52,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243362731] [2023-12-15 21:14:52,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447950834] [2023-12-15 21:14:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447950834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:52,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:14:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953385861] [2023-12-15 21:14:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:14:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:14:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:14:52,463 INFO L87 Difference]: Start difference. First operand 258 states and 393 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:52,699 INFO L93 Difference]: Finished difference Result 623 states and 927 transitions. [2023-12-15 21:14:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:14:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 111 [2023-12-15 21:14:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:52,704 INFO L225 Difference]: With dead ends: 623 [2023-12-15 21:14:52,704 INFO L226 Difference]: Without dead ends: 379 [2023-12-15 21:14:52,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:14:52,706 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 79 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:52,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 293 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:14:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-15 21:14:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 369. [2023-12-15 21:14:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 286 states have (on average 1.4195804195804196) internal successors, (406), 289 states have internal predecessors, (406), 66 states have call successors, (66), 16 states have call predecessors, (66), 16 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-15 21:14:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 538 transitions. [2023-12-15 21:14:52,732 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 538 transitions. Word has length 111 [2023-12-15 21:14:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:52,732 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 538 transitions. [2023-12-15 21:14:52,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 538 transitions. [2023-12-15 21:14:52,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:14:52,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:52,734 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:52,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:52,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:14:52,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:52,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1254946828, now seen corresponding path program 1 times [2023-12-15 21:14:52,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:52,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137477984] [2023-12-15 21:14:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:52,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:52,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719818190] [2023-12-15 21:14:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:52,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:52,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:14:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:53,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:14:53,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:54,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137477984] [2023-12-15 21:14:54,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719818190] [2023-12-15 21:14:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719818190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:14:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249143080] [2023-12-15 21:14:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:54,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:14:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:14:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:14:54,891 INFO L87 Difference]: Start difference. First operand 369 states and 538 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:56,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:56,125 INFO L93 Difference]: Finished difference Result 1033 states and 1509 transitions. [2023-12-15 21:14:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:14:56,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 111 [2023-12-15 21:14:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:56,129 INFO L225 Difference]: With dead ends: 1033 [2023-12-15 21:14:56,129 INFO L226 Difference]: Without dead ends: 678 [2023-12-15 21:14:56,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:14:56,131 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 147 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:56,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 566 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:14:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-15 21:14:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 558. [2023-12-15 21:14:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 460 states have (on average 1.4217391304347826) internal successors, (654), 468 states have internal predecessors, (654), 76 states have call successors, (76), 21 states have call predecessors, (76), 21 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-15 21:14:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 806 transitions. [2023-12-15 21:14:56,170 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 806 transitions. Word has length 111 [2023-12-15 21:14:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:56,171 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 806 transitions. [2023-12-15 21:14:56,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 806 transitions. [2023-12-15 21:14:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:14:56,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:56,172 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:56,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:56,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:56,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:56,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash 445600202, now seen corresponding path program 1 times [2023-12-15 21:14:56,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:56,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143509694] [2023-12-15 21:14:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:56,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:56,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68990882] [2023-12-15 21:14:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:56,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:56,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:56,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:56,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:14:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:56,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:14:56,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:56,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:56,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143509694] [2023-12-15 21:14:56,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68990882] [2023-12-15 21:14:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68990882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:14:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768640684] [2023-12-15 21:14:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:56,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:14:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:14:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:56,509 INFO L87 Difference]: Start difference. First operand 558 states and 806 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:56,567 INFO L93 Difference]: Finished difference Result 1298 states and 1875 transitions. [2023-12-15 21:14:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:14:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 111 [2023-12-15 21:14:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:56,571 INFO L225 Difference]: With dead ends: 1298 [2023-12-15 21:14:56,571 INFO L226 Difference]: Without dead ends: 754 [2023-12-15 21:14:56,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:14:56,573 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 44 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:56,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 176 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:14:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-12-15 21:14:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 747. [2023-12-15 21:14:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 623 states have (on average 1.4093097913322632) internal successors, (878), 636 states have internal predecessors, (878), 96 states have call successors, (96), 27 states have call predecessors, (96), 27 states have return successors, (96), 83 states have call predecessors, (96), 96 states have call successors, (96) [2023-12-15 21:14:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1070 transitions. [2023-12-15 21:14:56,622 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1070 transitions. Word has length 111 [2023-12-15 21:14:56,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:56,623 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1070 transitions. [2023-12-15 21:14:56,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:56,623 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1070 transitions. [2023-12-15 21:14:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 21:14:56,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:56,624 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:56,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:56,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 21:14:56,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:56,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:56,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1513112266, now seen corresponding path program 1 times [2023-12-15 21:14:56,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:56,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622145516] [2023-12-15 21:14:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:56,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:56,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:56,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178970380] [2023-12-15 21:14:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:56,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:56,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:56,846 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:56,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:14:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:56,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:14:56,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:57,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622145516] [2023-12-15 21:14:57,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178970380] [2023-12-15 21:14:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178970380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:14:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695869341] [2023-12-15 21:14:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:14:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:14:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:14:57,052 INFO L87 Difference]: Start difference. First operand 747 states and 1070 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:57,198 INFO L93 Difference]: Finished difference Result 1661 states and 2374 transitions. [2023-12-15 21:14:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:14:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 111 [2023-12-15 21:14:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:57,202 INFO L225 Difference]: With dead ends: 1661 [2023-12-15 21:14:57,202 INFO L226 Difference]: Without dead ends: 932 [2023-12-15 21:14:57,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:14:57,205 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 79 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:57,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:14:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-15 21:14:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 804. [2023-12-15 21:14:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 665 states have (on average 1.3924812030075189) internal successors, (926), 677 states have internal predecessors, (926), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 94 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-15 21:14:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1138 transitions. [2023-12-15 21:14:57,256 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1138 transitions. Word has length 111 [2023-12-15 21:14:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:57,257 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1138 transitions. [2023-12-15 21:14:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1138 transitions. [2023-12-15 21:14:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 21:14:57,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:57,258 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:57,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:14:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 21:14:57,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:57,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash 48157919, now seen corresponding path program 1 times [2023-12-15 21:14:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:57,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910827422] [2023-12-15 21:14:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:57,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:57,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976207782] [2023-12-15 21:14:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:57,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:57,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:57,492 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:57,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 21:14:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:57,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-15 21:14:57,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:14:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:14:57,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:14:57,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:14:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910827422] [2023-12-15 21:14:57,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:14:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976207782] [2023-12-15 21:14:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976207782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:14:57,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:14:57,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:14:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382302420] [2023-12-15 21:14:57,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:14:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:14:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:14:57,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:14:57,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:14:57,687 INFO L87 Difference]: Start difference. First operand 804 states and 1138 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:14:57,875 INFO L93 Difference]: Finished difference Result 1661 states and 2368 transitions. [2023-12-15 21:14:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:14:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 112 [2023-12-15 21:14:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:14:57,880 INFO L225 Difference]: With dead ends: 1661 [2023-12-15 21:14:57,880 INFO L226 Difference]: Without dead ends: 932 [2023-12-15 21:14:57,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:14:57,883 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 88 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:14:57,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 385 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:14:57,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-12-15 21:14:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 852. [2023-12-15 21:14:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 713 states have (on average 1.3955119214586256) internal successors, (995), 725 states have internal predecessors, (995), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 94 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-15 21:14:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1207 transitions. [2023-12-15 21:14:57,939 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1207 transitions. Word has length 112 [2023-12-15 21:14:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:14:57,939 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1207 transitions. [2023-12-15 21:14:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:14:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1207 transitions. [2023-12-15 21:14:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 21:14:57,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:14:57,940 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:14:57,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 21:14:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 21:14:58,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:14:58,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:14:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1147302168, now seen corresponding path program 1 times [2023-12-15 21:14:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:14:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211772008] [2023-12-15 21:14:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:14:58,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:14:58,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542088895] [2023-12-15 21:14:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:14:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:14:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:14:58,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:14:58,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 21:14:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:14:58,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:14:58,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:15:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 21:15:00,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:15:00,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:15:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211772008] [2023-12-15 21:15:00,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:15:00,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542088895] [2023-12-15 21:15:00,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542088895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:15:00,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:15:00,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 21:15:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288862276] [2023-12-15 21:15:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:15:00,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 21:15:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:15:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 21:15:00,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:15:00,265 INFO L87 Difference]: Start difference. First operand 852 states and 1207 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:15:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:15:03,770 INFO L93 Difference]: Finished difference Result 1825 states and 2572 transitions. [2023-12-15 21:15:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 21:15:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 113 [2023-12-15 21:15:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:15:03,776 INFO L225 Difference]: With dead ends: 1825 [2023-12-15 21:15:03,776 INFO L226 Difference]: Without dead ends: 1096 [2023-12-15 21:15:03,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:15:03,778 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 212 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:15:03,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 607 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 21:15:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2023-12-15 21:15:03,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 912. [2023-12-15 21:15:03,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 773 states have (on average 1.3842173350582148) internal successors, (1070), 785 states have internal predecessors, (1070), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 94 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-15 21:15:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1282 transitions. [2023-12-15 21:15:03,833 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1282 transitions. Word has length 113 [2023-12-15 21:15:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:15:03,834 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1282 transitions. [2023-12-15 21:15:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:15:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1282 transitions. [2023-12-15 21:15:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 21:15:03,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:15:03,835 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:15:03,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 21:15:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:15:04,041 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:15:04,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:15:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash 560496154, now seen corresponding path program 1 times [2023-12-15 21:15:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:15:04,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710899224] [2023-12-15 21:15:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:15:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:15:04,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:15:04,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521216591] [2023-12-15 21:15:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:15:04,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:15:04,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:15:04,062 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:15:04,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 21:15:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:15:04,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 21:15:04,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:15:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-15 21:15:12,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:15:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:15:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710899224] [2023-12-15 21:15:12,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:15:12,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521216591] [2023-12-15 21:15:12,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521216591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:15:12,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:15:12,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-15 21:15:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472287052] [2023-12-15 21:15:12,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:15:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 21:15:12,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:15:12,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 21:15:12,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:15:12,780 INFO L87 Difference]: Start difference. First operand 912 states and 1282 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:15:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:15:23,176 INFO L93 Difference]: Finished difference Result 2091 states and 2915 transitions. [2023-12-15 21:15:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-15 21:15:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 113 [2023-12-15 21:15:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:15:23,182 INFO L225 Difference]: With dead ends: 2091 [2023-12-15 21:15:23,182 INFO L226 Difference]: Without dead ends: 1362 [2023-12-15 21:15:23,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=320, Invalid=1320, Unknown=0, NotChecked=0, Total=1640 [2023-12-15 21:15:23,184 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 327 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:15:23,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 881 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-15 21:15:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-15 21:15:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 942. [2023-12-15 21:15:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 803 states have (on average 1.3910336239103362) internal successors, (1117), 815 states have internal predecessors, (1117), 106 states have call successors, (106), 32 states have call predecessors, (106), 32 states have return successors, (106), 94 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-15 21:15:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1329 transitions. [2023-12-15 21:15:23,237 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1329 transitions. Word has length 113 [2023-12-15 21:15:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:15:23,237 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1329 transitions. [2023-12-15 21:15:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-15 21:15:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1329 transitions. [2023-12-15 21:15:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 21:15:23,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:15:23,239 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:15:23,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 21:15:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:15:23,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:15:23,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:15:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 983197980, now seen corresponding path program 1 times [2023-12-15 21:15:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:15:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163076597] [2023-12-15 21:15:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:15:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:15:23,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:15:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685072558] [2023-12-15 21:15:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:15:23,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:15:23,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:15:23,461 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:15:23,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 21:15:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:15:23,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:15:23,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:15:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-12-15 21:15:32,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:15:56,785 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:15:56,785 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:15:57,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 21:15:57,986 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:15:58,001 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 137 [2023-12-15 21:15:58,002 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:15:58,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 21:15:58,003 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 114 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-15 21:15:58,007 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:15:58,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:15:58,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:15:58 BoogieIcfgContainer [2023-12-15 21:15:58,010 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:15:58,010 INFO L158 Benchmark]: Toolchain (without parser) took 71717.58ms. Allocated memory was 323.0MB in the beginning and 701.5MB in the end (delta: 378.5MB). Free memory was 267.6MB in the beginning and 325.6MB in the end (delta: -58.0MB). Peak memory consumption was 322.1MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,010 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 199.2MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:15:58,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.49ms. Allocated memory is still 323.0MB. Free memory was 267.6MB in the beginning and 254.5MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.31ms. Allocated memory is still 323.0MB. Free memory was 254.5MB in the beginning and 250.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,011 INFO L158 Benchmark]: Boogie Preprocessor took 76.65ms. Allocated memory is still 323.0MB. Free memory was 250.9MB in the beginning and 245.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,011 INFO L158 Benchmark]: RCFGBuilder took 575.36ms. Allocated memory is still 323.0MB. Free memory was 245.6MB in the beginning and 221.5MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,012 INFO L158 Benchmark]: TraceAbstraction took 70656.04ms. Allocated memory was 323.0MB in the beginning and 701.5MB in the end (delta: 378.5MB). Free memory was 220.5MB in the beginning and 325.6MB in the end (delta: -105.2MB). Peak memory consumption was 274.9MB. Max. memory is 8.0GB. [2023-12-15 21:15:58,013 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 199.2MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 338.49ms. Allocated memory is still 323.0MB. Free memory was 267.6MB in the beginning and 254.5MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.31ms. Allocated memory is still 323.0MB. Free memory was 254.5MB in the beginning and 250.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.65ms. Allocated memory is still 323.0MB. Free memory was 250.9MB in the beginning and 245.6MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 575.36ms. Allocated memory is still 323.0MB. Free memory was 245.6MB in the beginning and 221.5MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 70656.04ms. Allocated memory was 323.0MB in the beginning and 701.5MB in the end (delta: 378.5MB). Free memory was 220.5MB in the beginning and 325.6MB in the end (delta: -105.2MB). Peak memory consumption was 274.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 114 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.6s, OverallIterations: 15, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1616 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1589 mSDsluCounter, 4945 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3676 mSDsCounter, 320 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2141 IncrementalHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 320 mSolverCounterUnsat, 1269 mSDtfsCounter, 2141 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1690 GetRequests, 1560 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=942occurred in iteration=14, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1129 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 1640 NumberOfCodeBlocks, 1640 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1625 ConstructedInterpolants, 0 QuantifiedInterpolants, 5694 SizeOfPredicates, 56 NumberOfNonLiveVariables, 3651 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 7179/7200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown