/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_loopvsstraightlinecode_50-1loop_file-34.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:00:28,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:00:28,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:00:28,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:00:28,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:00:28,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:00:28,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:00:28,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:00:28,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:00:28,807 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:00:28,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:00:28,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:00:28,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:00:28,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:00:28,809 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:00:28,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:00:28,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:00:28,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:00:28,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:00:28,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:00:28,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:00:28,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:00:28,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:00:28,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:00:28,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:00:28,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:00:28,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:00:28,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:00:28,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:00:28,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:00:28,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:00:28,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:00:28,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:00:28,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:00:28,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:00:28,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:00:28,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:00:28,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:00:28,815 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:00:29,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:00:29,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:00:29,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:00:29,031 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:00:29,031 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:00:29,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2023-12-19 12:00:29,996 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:00:30,188 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:00:30,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2023-12-19 12:00:30,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fd443f0e/3e48dca3253b475c8b4dc99b4d2365d4/FLAG371447fb3 [2023-12-19 12:00:30,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fd443f0e/3e48dca3253b475c8b4dc99b4d2365d4 [2023-12-19 12:00:30,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:00:30,212 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:00:30,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:00:30,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:00:30,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:00:30,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab3110f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30, skipping insertion in model container [2023-12-19 12:00:30,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,250 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:00:30,349 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_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2023-12-19 12:00:30,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:00:30,402 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:00:30,411 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_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2023-12-19 12:00:30,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:00:30,444 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:00:30,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30 WrapperNode [2023-12-19 12:00:30,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:00:30,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:00:30,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:00:30,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:00:30,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,488 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2023-12-19 12:00:30,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:00:30,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:00:30,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:00:30,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:00:30,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,518 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 12:00:30,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:00:30,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:00:30,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:00:30,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:00:30,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (1/1) ... [2023-12-19 12:00:30,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:00:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:30,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:00:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:00:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:00:30,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:00:30,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:00:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:00:30,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:00:30,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:00:30,680 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:00:30,681 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:00:31,027 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:00:31,057 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:00:31,057 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:00:31,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:00:31 BoogieIcfgContainer [2023-12-19 12:00:31,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:00:31,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:00:31,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:00:31,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:00:31,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:00:30" (1/3) ... [2023-12-19 12:00:31,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b8bd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:00:31, skipping insertion in model container [2023-12-19 12:00:31,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:00:30" (2/3) ... [2023-12-19 12:00:31,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b8bd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:00:31, skipping insertion in model container [2023-12-19 12:00:31,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:00:31" (3/3) ... [2023-12-19 12:00:31,063 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-34.i [2023-12-19 12:00:31,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:00:31,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:00:31,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:00:31,109 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;@3ccf39b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:00:31,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:00:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 12:00:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 12:00:31,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:31,120 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:31,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:31,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash 310197264, now seen corresponding path program 1 times [2023-12-19 12:00:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972511942] [2023-12-19 12:00:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:31,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972511942] [2023-12-19 12:00:31,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:00:31,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689772940] [2023-12-19 12:00:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:31,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:31,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:31,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:31,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:00:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:31,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:00:31,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 12:00:31,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:00:31,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689772940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:00:31,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:00:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:00:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156920467] [2023-12-19 12:00:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:00:31,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:00:31,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:00:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:00:31,515 INFO L87 Difference]: Start difference. First operand has 61 states, 45 states have (on average 1.6) internal successors, (72), 46 states have internal predecessors, (72), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 12:00:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:00:31,562 INFO L93 Difference]: Finished difference Result 121 states and 208 transitions. [2023-12-19 12:00:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:00:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2023-12-19 12:00:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:00:31,570 INFO L225 Difference]: With dead ends: 121 [2023-12-19 12:00:31,570 INFO L226 Difference]: Without dead ends: 59 [2023-12-19 12:00:31,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:00:31,575 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:00:31,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:00:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-19 12:00:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-12-19 12:00:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.5227272727272727) internal successors, (67), 44 states have internal predecessors, (67), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 12:00:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2023-12-19 12:00:31,604 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 93 transitions. Word has length 90 [2023-12-19 12:00:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:00:31,605 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-12-19 12:00:31,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 12:00:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 93 transitions. [2023-12-19 12:00:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 12:00:31,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:31,608 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:31,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 12:00:31,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:00:31,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:31,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash -663754418, now seen corresponding path program 1 times [2023-12-19 12:00:31,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:31,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013602660] [2023-12-19 12:00:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:31,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:31,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:00:31,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350064765] [2023-12-19 12:00:31,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:31,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:31,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:31,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:31,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:00:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:31,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-19 12:00:31,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:00:32,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:00:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013602660] [2023-12-19 12:00:32,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:00:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350064765] [2023-12-19 12:00:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350064765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:00:32,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:00:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 12:00:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055806745] [2023-12-19 12:00:32,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:00:32,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 12:00:32,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:32,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 12:00:32,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:00:32,129 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:00:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:00:32,296 INFO L93 Difference]: Finished difference Result 176 states and 276 transitions. [2023-12-19 12:00:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 12:00:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-12-19 12:00:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:00:32,301 INFO L225 Difference]: With dead ends: 176 [2023-12-19 12:00:32,301 INFO L226 Difference]: Without dead ends: 118 [2023-12-19 12:00:32,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:00:32,304 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 117 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:00:32,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 359 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:00:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-19 12:00:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 61. [2023-12-19 12:00:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 12:00:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 95 transitions. [2023-12-19 12:00:32,327 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 95 transitions. Word has length 90 [2023-12-19 12:00:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:00:32,329 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 95 transitions. [2023-12-19 12:00:32,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:00:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 95 transitions. [2023-12-19 12:00:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 12:00:32,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:32,334 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:32,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:00:32,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:00:32,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:32,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1968835048, now seen corresponding path program 1 times [2023-12-19 12:00:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:32,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837721441] [2023-12-19 12:00:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:32,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:00:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530418765] [2023-12-19 12:00:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:32,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:32,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:32,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:32,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:00:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:32,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 12:00:32,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 12:00:32,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:00:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 12:00:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837721441] [2023-12-19 12:00:33,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:00:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530418765] [2023-12-19 12:00:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530418765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:00:33,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:00:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 12:00:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599062232] [2023-12-19 12:00:33,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:00:33,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:00:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:00:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:00:33,004 INFO L87 Difference]: Start difference. First operand 61 states and 95 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 12:00:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:00:33,349 INFO L93 Difference]: Finished difference Result 231 states and 352 transitions. [2023-12-19 12:00:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 12:00:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 91 [2023-12-19 12:00:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:00:33,351 INFO L225 Difference]: With dead ends: 231 [2023-12-19 12:00:33,351 INFO L226 Difference]: Without dead ends: 171 [2023-12-19 12:00:33,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-19 12:00:33,352 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 398 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:00:33,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 325 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:00:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-19 12:00:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 119. [2023-12-19 12:00:33,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 89 states have internal predecessors, (131), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 12:00:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 183 transitions. [2023-12-19 12:00:33,368 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 183 transitions. Word has length 91 [2023-12-19 12:00:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:00:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 183 transitions. [2023-12-19 12:00:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 12:00:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 183 transitions. [2023-12-19 12:00:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 12:00:33,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:33,370 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:33,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:00:33,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:33,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:33,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:33,571 INFO L85 PathProgramCache]: Analyzing trace with hash 347239097, now seen corresponding path program 1 times [2023-12-19 12:00:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:33,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855326843] [2023-12-19 12:00:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:33,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:00:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434958870] [2023-12-19 12:00:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:33,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:33,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:33,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:00:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:33,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 12:00:33,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:00:33,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:00:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:33,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855326843] [2023-12-19 12:00:33,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:00:33,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434958870] [2023-12-19 12:00:33,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434958870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:00:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:00:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:00:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405146588] [2023-12-19 12:00:33,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:00:33,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:00:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:00:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:00:33,762 INFO L87 Difference]: Start difference. First operand 119 states and 183 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:00:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:00:33,842 INFO L93 Difference]: Finished difference Result 407 states and 626 transitions. [2023-12-19 12:00:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:00:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2023-12-19 12:00:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:00:33,846 INFO L225 Difference]: With dead ends: 407 [2023-12-19 12:00:33,846 INFO L226 Difference]: Without dead ends: 289 [2023-12-19 12:00:33,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:00:33,850 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 113 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:00:33,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 291 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:00:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-19 12:00:33,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 239. [2023-12-19 12:00:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 180 states have (on average 1.4555555555555555) internal successors, (262), 180 states have internal predecessors, (262), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 12:00:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 366 transitions. [2023-12-19 12:00:33,896 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 366 transitions. Word has length 91 [2023-12-19 12:00:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:00:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 366 transitions. [2023-12-19 12:00:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:00:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 366 transitions. [2023-12-19 12:00:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:00:33,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:33,899 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:33,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:00:34,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:34,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:34,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:34,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2000049611, now seen corresponding path program 1 times [2023-12-19 12:00:34,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:34,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570097751] [2023-12-19 12:00:34,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:34,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:34,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:00:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789706505] [2023-12-19 12:00:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:34,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:34,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:00:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:34,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-19 12:00:34,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 198 proven. 39 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-19 12:00:35,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:00:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 12:00:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570097751] [2023-12-19 12:00:38,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:00:38,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789706505] [2023-12-19 12:00:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789706505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:00:38,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:00:38,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-19 12:00:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280414126] [2023-12-19 12:00:38,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:00:38,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 12:00:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:38,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 12:00:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-12-19 12:00:38,129 INFO L87 Difference]: Start difference. First operand 239 states and 366 transitions. Second operand has 26 states, 25 states have (on average 2.8) internal successors, (70), 26 states have internal predecessors, (70), 6 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-19 12:00:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:00:47,868 INFO L93 Difference]: Finished difference Result 1538 states and 2269 transitions. [2023-12-19 12:00:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-19 12:00:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.8) internal successors, (70), 26 states have internal predecessors, (70), 6 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 92 [2023-12-19 12:00:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:00:47,873 INFO L225 Difference]: With dead ends: 1538 [2023-12-19 12:00:47,873 INFO L226 Difference]: Without dead ends: 1300 [2023-12-19 12:00:47,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3982 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2147, Invalid=8773, Unknown=0, NotChecked=0, Total=10920 [2023-12-19 12:00:47,877 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 1453 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:00:47,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 855 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 12:00:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-12-19 12:00:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 626. [2023-12-19 12:00:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 502 states have (on average 1.4223107569721116) internal successors, (714), 504 states have internal predecessors, (714), 105 states have call successors, (105), 18 states have call predecessors, (105), 18 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 12:00:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 924 transitions. [2023-12-19 12:00:47,963 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 924 transitions. Word has length 92 [2023-12-19 12:00:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:00:47,963 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 924 transitions. [2023-12-19 12:00:47,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.8) internal successors, (70), 26 states have internal predecessors, (70), 6 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-19 12:00:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 924 transitions. [2023-12-19 12:00:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:00:47,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:00:47,964 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:00:47,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 12:00:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:48,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:00:48,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:00:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash 673321734, now seen corresponding path program 1 times [2023-12-19 12:00:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:00:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226461175] [2023-12-19 12:00:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:00:48,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:00:48,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298110608] [2023-12-19 12:00:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:00:48,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:00:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:00:48,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:00:48,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:00:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:00:48,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 12:00:48,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:00:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 213 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 12:00:50,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:00:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:00:55,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:00:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226461175] [2023-12-19 12:00:55,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:00:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298110608] [2023-12-19 12:00:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298110608] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:00:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:00:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 26 [2023-12-19 12:00:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244647756] [2023-12-19 12:00:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:00:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 12:00:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:00:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 12:00:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2023-12-19 12:00:55,793 INFO L87 Difference]: Start difference. First operand 626 states and 924 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:02,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:01:12,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:01:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:15,434 INFO L93 Difference]: Finished difference Result 1116 states and 1626 transitions. [2023-12-19 12:01:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:01:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 12:01:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:15,439 INFO L225 Difference]: With dead ends: 1116 [2023-12-19 12:01:15,439 INFO L226 Difference]: Without dead ends: 870 [2023-12-19 12:01:15,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 12:01:15,441 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 250 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:15,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 426 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2023-12-19 12:01:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-19 12:01:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 700. [2023-12-19 12:01:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 568 states have (on average 1.4014084507042253) internal successors, (796), 570 states have internal predecessors, (796), 105 states have call successors, (105), 26 states have call predecessors, (105), 26 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-12-19 12:01:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1006 transitions. [2023-12-19 12:01:15,523 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1006 transitions. Word has length 92 [2023-12-19 12:01:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:15,523 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1006 transitions. [2023-12-19 12:01:15,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1006 transitions. [2023-12-19 12:01:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:01:15,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:15,524 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:15,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 12:01:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:15,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:15,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 730580036, now seen corresponding path program 1 times [2023-12-19 12:01:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648766700] [2023-12-19 12:01:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:15,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332897947] [2023-12-19 12:01:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:15,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:15,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 12:01:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:15,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:01:15,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:19,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648766700] [2023-12-19 12:01:19,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332897947] [2023-12-19 12:01:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332897947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:19,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:19,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:01:19,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640021430] [2023-12-19 12:01:19,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:01:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:01:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:01:19,826 INFO L87 Difference]: Start difference. First operand 700 states and 1006 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:24,585 INFO L93 Difference]: Finished difference Result 1583 states and 2296 transitions. [2023-12-19 12:01:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 12:01:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 12:01:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:24,600 INFO L225 Difference]: With dead ends: 1583 [2023-12-19 12:01:24,600 INFO L226 Difference]: Without dead ends: 1370 [2023-12-19 12:01:24,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:01:24,602 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 329 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:24,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 602 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 12:01:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-19 12:01:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1269. [2023-12-19 12:01:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1025 states have (on average 1.4) internal successors, (1435), 1027 states have internal predecessors, (1435), 196 states have call successors, (196), 47 states have call predecessors, (196), 47 states have return successors, (196), 194 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-19 12:01:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1827 transitions. [2023-12-19 12:01:24,771 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1827 transitions. Word has length 92 [2023-12-19 12:01:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:24,771 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1827 transitions. [2023-12-19 12:01:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1827 transitions. [2023-12-19 12:01:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:01:24,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:24,773 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:24,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:24,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:24,979 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:24,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:24,979 INFO L85 PathProgramCache]: Analyzing trace with hash -136024892, now seen corresponding path program 1 times [2023-12-19 12:01:24,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:24,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155763194] [2023-12-19 12:01:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:24,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:24,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046977809] [2023-12-19 12:01:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:24,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:25,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:25,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 12:01:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:25,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 12:01:25,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 12:01:25,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:01:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155763194] [2023-12-19 12:01:31,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046977809] [2023-12-19 12:01:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046977809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:01:31,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:01:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-19 12:01:31,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642237048] [2023-12-19 12:01:31,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:01:31,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 12:01:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 12:01:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-19 12:01:31,312 INFO L87 Difference]: Start difference. First operand 1269 states and 1827 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 12:01:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:32,366 INFO L93 Difference]: Finished difference Result 2083 states and 2971 transitions. [2023-12-19 12:01:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 12:01:32,367 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2023-12-19 12:01:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:32,371 INFO L225 Difference]: With dead ends: 2083 [2023-12-19 12:01:32,371 INFO L226 Difference]: Without dead ends: 1377 [2023-12-19 12:01:32,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-12-19 12:01:32,373 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 360 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:32,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 372 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 12:01:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2023-12-19 12:01:32,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1257. [2023-12-19 12:01:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1013 states have (on average 1.3938795656465943) internal successors, (1412), 1015 states have internal predecessors, (1412), 196 states have call successors, (196), 47 states have call predecessors, (196), 47 states have return successors, (196), 194 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-19 12:01:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1804 transitions. [2023-12-19 12:01:32,522 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1804 transitions. Word has length 92 [2023-12-19 12:01:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:32,523 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1804 transitions. [2023-12-19 12:01:32,523 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 12:01:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1804 transitions. [2023-12-19 12:01:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:01:32,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:32,524 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:32,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 12:01:32,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:32,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 86515720, now seen corresponding path program 1 times [2023-12-19 12:01:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433650595] [2023-12-19 12:01:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:32,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4128877] [2023-12-19 12:01:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:32,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:32,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:32,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 12:01:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:33,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 12:01:33,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:33,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433650595] [2023-12-19 12:01:33,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4128877] [2023-12-19 12:01:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4128877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:33,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 12:01:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524445871] [2023-12-19 12:01:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:33,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 12:01:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:33,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 12:01:33,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 12:01:33,430 INFO L87 Difference]: Start difference. First operand 1257 states and 1804 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:33,729 INFO L93 Difference]: Finished difference Result 1747 states and 2536 transitions. [2023-12-19 12:01:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 12:01:33,730 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 12:01:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:33,733 INFO L225 Difference]: With dead ends: 1747 [2023-12-19 12:01:33,733 INFO L226 Difference]: Without dead ends: 1007 [2023-12-19 12:01:33,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 12:01:33,738 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 63 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:33,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 210 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 12:01:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-19 12:01:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 963. [2023-12-19 12:01:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 767 states have (on average 1.376792698826597) internal successors, (1056), 769 states have internal predecessors, (1056), 157 states have call successors, (157), 38 states have call predecessors, (157), 38 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:01:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1370 transitions. [2023-12-19 12:01:33,890 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1370 transitions. Word has length 92 [2023-12-19 12:01:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:33,891 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1370 transitions. [2023-12-19 12:01:33,891 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1370 transitions. [2023-12-19 12:01:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 12:01:33,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:33,893 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:33,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:34,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:34,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:34,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:34,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2010443714, now seen corresponding path program 1 times [2023-12-19 12:01:34,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:34,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777872815] [2023-12-19 12:01:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:34,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:34,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869815887] [2023-12-19 12:01:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:34,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:34,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:34,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 12:01:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:34,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:01:34,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:38,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777872815] [2023-12-19 12:01:38,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869815887] [2023-12-19 12:01:38,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869815887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:01:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174624860] [2023-12-19 12:01:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:38,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:01:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:38,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:01:38,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:01:38,128 INFO L87 Difference]: Start difference. First operand 963 states and 1370 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:43,598 INFO L93 Difference]: Finished difference Result 1652 states and 2396 transitions. [2023-12-19 12:01:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 12:01:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 92 [2023-12-19 12:01:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:43,602 INFO L225 Difference]: With dead ends: 1652 [2023-12-19 12:01:43,603 INFO L226 Difference]: Without dead ends: 1120 [2023-12-19 12:01:43,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:01:43,604 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 288 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:43,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 589 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 12:01:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2023-12-19 12:01:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 965. [2023-12-19 12:01:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 769 states have (on average 1.3758127438231469) internal successors, (1058), 771 states have internal predecessors, (1058), 157 states have call successors, (157), 38 states have call predecessors, (157), 38 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:01:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1372 transitions. [2023-12-19 12:01:43,736 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1372 transitions. Word has length 92 [2023-12-19 12:01:43,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:43,736 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1372 transitions. [2023-12-19 12:01:43,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1372 transitions. [2023-12-19 12:01:43,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:43,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:43,737 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:43,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:43,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 12:01:43,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:43,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2010816308, now seen corresponding path program 1 times [2023-12-19 12:01:43,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:43,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127972664] [2023-12-19 12:01:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:43,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:43,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166297871] [2023-12-19 12:01:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:43,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:43,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:43,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:44,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 12:01:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:44,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 12:01:44,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:45,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127972664] [2023-12-19 12:01:45,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166297871] [2023-12-19 12:01:45,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166297871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:45,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:45,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 12:01:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375047579] [2023-12-19 12:01:45,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:45,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 12:01:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:45,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 12:01:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-19 12:01:45,216 INFO L87 Difference]: Start difference. First operand 965 states and 1372 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:45,926 INFO L93 Difference]: Finished difference Result 1400 states and 2004 transitions. [2023-12-19 12:01:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 12:01:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:01:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:45,932 INFO L225 Difference]: With dead ends: 1400 [2023-12-19 12:01:45,932 INFO L226 Difference]: Without dead ends: 1279 [2023-12-19 12:01:45,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 12:01:45,934 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 238 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:45,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 407 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 12:01:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-12-19 12:01:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1177. [2023-12-19 12:01:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 940 states have (on average 1.3787234042553191) internal successors, (1296), 943 states have internal predecessors, (1296), 190 states have call successors, (190), 46 states have call predecessors, (190), 46 states have return successors, (190), 187 states have call predecessors, (190), 190 states have call successors, (190) [2023-12-19 12:01:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1676 transitions. [2023-12-19 12:01:46,133 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1676 transitions. Word has length 93 [2023-12-19 12:01:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:46,133 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1676 transitions. [2023-12-19 12:01:46,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1676 transitions. [2023-12-19 12:01:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:46,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:46,134 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:46,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:46,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 12:01:46,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:46,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1953558006, now seen corresponding path program 1 times [2023-12-19 12:01:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:46,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268039657] [2023-12-19 12:01:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:46,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:46,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728833412] [2023-12-19 12:01:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:46,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:46,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:46,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 12:01:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:46,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 12:01:46,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:47,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:47,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268039657] [2023-12-19 12:01:47,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:47,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728833412] [2023-12-19 12:01:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728833412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:47,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:01:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955209443] [2023-12-19 12:01:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:01:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:01:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:01:47,503 INFO L87 Difference]: Start difference. First operand 1177 states and 1676 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:49,189 INFO L93 Difference]: Finished difference Result 1852 states and 2679 transitions. [2023-12-19 12:01:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 12:01:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:01:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:49,193 INFO L225 Difference]: With dead ends: 1852 [2023-12-19 12:01:49,193 INFO L226 Difference]: Without dead ends: 1566 [2023-12-19 12:01:49,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 12:01:49,194 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 494 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:49,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 772 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 12:01:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-12-19 12:01:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1367. [2023-12-19 12:01:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1100 states have (on average 1.39) internal successors, (1529), 1103 states have internal predecessors, (1529), 216 states have call successors, (216), 50 states have call predecessors, (216), 50 states have return successors, (216), 213 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-19 12:01:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1961 transitions. [2023-12-19 12:01:49,367 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1961 transitions. Word has length 93 [2023-12-19 12:01:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:49,367 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1961 transitions. [2023-12-19 12:01:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1961 transitions. [2023-12-19 12:01:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:49,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:49,368 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:49,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:49,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 12:01:49,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:49,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -989747954, now seen corresponding path program 1 times [2023-12-19 12:01:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987050387] [2023-12-19 12:01:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:49,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843946254] [2023-12-19 12:01:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:49,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:49,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:49,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:49,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 12:01:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:49,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 12:01:49,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-19 12:01:49,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:01:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 12:01:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987050387] [2023-12-19 12:01:49,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:49,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843946254] [2023-12-19 12:01:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843946254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:01:49,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:01:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 12:01:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414088720] [2023-12-19 12:01:49,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:01:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 12:01:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 12:01:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 12:01:49,905 INFO L87 Difference]: Start difference. First operand 1367 states and 1961 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 12:01:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:50,279 INFO L93 Difference]: Finished difference Result 1759 states and 2494 transitions. [2023-12-19 12:01:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 12:01:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2023-12-19 12:01:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:50,283 INFO L225 Difference]: With dead ends: 1759 [2023-12-19 12:01:50,283 INFO L226 Difference]: Without dead ends: 1023 [2023-12-19 12:01:50,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-19 12:01:50,285 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 248 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:50,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 337 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:01:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-12-19 12:01:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 957. [2023-12-19 12:01:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 768 states have (on average 1.3567708333333333) internal successors, (1042), 770 states have internal predecessors, (1042), 144 states have call successors, (144), 44 states have call predecessors, (144), 44 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 12:01:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1330 transitions. [2023-12-19 12:01:50,418 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1330 transitions. Word has length 93 [2023-12-19 12:01:50,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:50,418 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1330 transitions. [2023-12-19 12:01:50,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 12:01:50,418 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1330 transitions. [2023-12-19 12:01:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:50,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:50,419 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:50,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:50,624 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 [2023-12-19 12:01:50,625 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1716871440, now seen corresponding path program 1 times [2023-12-19 12:01:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904351899] [2023-12-19 12:01:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:50,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779217310] [2023-12-19 12:01:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:50,639 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) [2023-12-19 12:01:50,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 12:01:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:51,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 12:01:51,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 213 proven. 45 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 12:01:52,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:01:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904351899] [2023-12-19 12:01:53,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779217310] [2023-12-19 12:01:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779217310] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:01:53,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:01:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 24 [2023-12-19 12:01:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405342270] [2023-12-19 12:01:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 12:01:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 12:01:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:01:53,783 INFO L87 Difference]: Start difference. First operand 957 states and 1330 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:54,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:54,472 INFO L93 Difference]: Finished difference Result 1392 states and 1964 transitions. [2023-12-19 12:01:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:01:54,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:01:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:54,476 INFO L225 Difference]: With dead ends: 1392 [2023-12-19 12:01:54,476 INFO L226 Difference]: Without dead ends: 1161 [2023-12-19 12:01:54,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2023-12-19 12:01:54,477 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 174 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:54,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 315 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 12:01:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-19 12:01:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 959. [2023-12-19 12:01:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 770 states have (on average 1.3558441558441559) internal successors, (1044), 772 states have internal predecessors, (1044), 144 states have call successors, (144), 44 states have call predecessors, (144), 44 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2023-12-19 12:01:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1332 transitions. [2023-12-19 12:01:54,601 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1332 transitions. Word has length 93 [2023-12-19 12:01:54,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:54,602 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1332 transitions. [2023-12-19 12:01:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:54,602 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1332 transitions. [2023-12-19 12:01:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:54,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:54,603 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:54,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:54,808 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 [2023-12-19 12:01:54,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:54,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1774129742, now seen corresponding path program 1 times [2023-12-19 12:01:54,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:54,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902384656] [2023-12-19 12:01:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:54,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041642074] [2023-12-19 12:01:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:54,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:54,828 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) [2023-12-19 12:01:54,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 12:01:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:54,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 12:01:54,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:55,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:55,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902384656] [2023-12-19 12:01:55,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041642074] [2023-12-19 12:01:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041642074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:01:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186639948] [2023-12-19 12:01:55,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:01:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:01:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:01:55,940 INFO L87 Difference]: Start difference. First operand 959 states and 1332 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:01:57,307 INFO L93 Difference]: Finished difference Result 1665 states and 2350 transitions. [2023-12-19 12:01:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 12:01:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:01:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:01:57,312 INFO L225 Difference]: With dead ends: 1665 [2023-12-19 12:01:57,312 INFO L226 Difference]: Without dead ends: 1363 [2023-12-19 12:01:57,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-12-19 12:01:57,315 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 433 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:01:57,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 664 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 12:01:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2023-12-19 12:01:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1076. [2023-12-19 12:01:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 871 states have (on average 1.3605051664753158) internal successors, (1185), 873 states have internal predecessors, (1185), 157 states have call successors, (157), 47 states have call predecessors, (157), 47 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:01:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1499 transitions. [2023-12-19 12:01:57,453 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1499 transitions. Word has length 93 [2023-12-19 12:01:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:01:57,453 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1499 transitions. [2023-12-19 12:01:57,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:01:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1499 transitions. [2023-12-19 12:01:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:01:57,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:01:57,454 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:01:57,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 12:01:57,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 12:01:57,661 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:01:57,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:01:57,661 INFO L85 PathProgramCache]: Analyzing trace with hash 706623932, now seen corresponding path program 1 times [2023-12-19 12:01:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:01:57,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725477452] [2023-12-19 12:01:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:57,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:01:57,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:01:57,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924735796] [2023-12-19 12:01:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:01:57,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:01:57,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:01:57,679 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:01:57,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 12:01:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:01:58,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 12:01:58,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:01:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:01:58,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:01:58,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:01:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725477452] [2023-12-19 12:01:58,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:01:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924735796] [2023-12-19 12:01:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924735796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:01:58,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:01:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 12:01:58,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613486155] [2023-12-19 12:01:58,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:01:58,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 12:01:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:01:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 12:01:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-19 12:01:58,896 INFO L87 Difference]: Start difference. First operand 1076 states and 1499 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:00,680 INFO L93 Difference]: Finished difference Result 1814 states and 2564 transitions. [2023-12-19 12:02:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 12:02:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:02:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:00,684 INFO L225 Difference]: With dead ends: 1814 [2023-12-19 12:02:00,684 INFO L226 Difference]: Without dead ends: 1192 [2023-12-19 12:02:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2023-12-19 12:02:00,685 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 173 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 383 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 12:02:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2023-12-19 12:02:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1096. [2023-12-19 12:02:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 891 states have (on average 1.3546576879910213) internal successors, (1207), 893 states have internal predecessors, (1207), 157 states have call successors, (157), 47 states have call predecessors, (157), 47 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:02:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1521 transitions. [2023-12-19 12:02:00,819 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1521 transitions. Word has length 93 [2023-12-19 12:02:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:00,819 INFO L495 AbstractCegarLoop]: Abstraction has 1096 states and 1521 transitions. [2023-12-19 12:02:00,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1521 transitions. [2023-12-19 12:02:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:02:00,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:00,821 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:00,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:01,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 12:02:01,028 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:01,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 763882234, now seen corresponding path program 1 times [2023-12-19 12:02:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:01,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676658677] [2023-12-19 12:02:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:01,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:01,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:01,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249672045] [2023-12-19 12:02:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:01,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:01,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:01,039 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:01,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 12:02:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:01,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:02:01,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:02:05,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:02:05,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676658677] [2023-12-19 12:02:05,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249672045] [2023-12-19 12:02:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249672045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:02:05,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:02:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:02:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469604075] [2023-12-19 12:02:05,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:02:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:02:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:02:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:02:05,489 INFO L87 Difference]: Start difference. First operand 1096 states and 1521 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:12,635 INFO L93 Difference]: Finished difference Result 1456 states and 2050 transitions. [2023-12-19 12:02:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 12:02:12,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:02:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:12,639 INFO L225 Difference]: With dead ends: 1456 [2023-12-19 12:02:12,639 INFO L226 Difference]: Without dead ends: 1158 [2023-12-19 12:02:12,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:02:12,640 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 287 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:12,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 720 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 12:02:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2023-12-19 12:02:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1098. [2023-12-19 12:02:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 893 states have (on average 1.3538633818589025) internal successors, (1209), 895 states have internal predecessors, (1209), 157 states have call successors, (157), 47 states have call predecessors, (157), 47 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:02:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1523 transitions. [2023-12-19 12:02:12,767 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1523 transitions. Word has length 93 [2023-12-19 12:02:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:12,767 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1523 transitions. [2023-12-19 12:02:12,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1523 transitions. [2023-12-19 12:02:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 12:02:12,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:12,768 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:12,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:12,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 12:02:12,974 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:12,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1022677558, now seen corresponding path program 1 times [2023-12-19 12:02:12,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:12,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361514831] [2023-12-19 12:02:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:12,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463362400] [2023-12-19 12:02:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:12,987 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:12,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 12:02:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:13,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:02:13,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:02:17,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:02:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361514831] [2023-12-19 12:02:17,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463362400] [2023-12-19 12:02:17,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463362400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:02:17,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:02:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:02:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282288079] [2023-12-19 12:02:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:02:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:02:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:02:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:02:17,460 INFO L87 Difference]: Start difference. First operand 1098 states and 1523 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:22,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:22,773 INFO L93 Difference]: Finished difference Result 1762 states and 2495 transitions. [2023-12-19 12:02:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 12:02:22,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-12-19 12:02:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:22,779 INFO L225 Difference]: With dead ends: 1762 [2023-12-19 12:02:22,779 INFO L226 Difference]: Without dead ends: 1158 [2023-12-19 12:02:22,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:02:22,780 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 283 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:22,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 523 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 12:02:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2023-12-19 12:02:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1100. [2023-12-19 12:02:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 895 states have (on average 1.353072625698324) internal successors, (1211), 897 states have internal predecessors, (1211), 157 states have call successors, (157), 47 states have call predecessors, (157), 47 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:02:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1525 transitions. [2023-12-19 12:02:22,905 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1525 transitions. Word has length 93 [2023-12-19 12:02:22,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:22,905 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1525 transitions. [2023-12-19 12:02:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:22,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1525 transitions. [2023-12-19 12:02:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 12:02:22,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:22,906 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:22,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 12:02:23,111 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1595251769, now seen corresponding path program 1 times [2023-12-19 12:02:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250814025] [2023-12-19 12:02:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:23,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:23,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651522045] [2023-12-19 12:02:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:23,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:23,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 12:02:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:23,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:02:23,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:02:26,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:02:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250814025] [2023-12-19 12:02:26,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651522045] [2023-12-19 12:02:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651522045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:02:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:02:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:02:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787643533] [2023-12-19 12:02:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:02:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:02:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:02:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:02:26,985 INFO L87 Difference]: Start difference. First operand 1100 states and 1525 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:35,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:35,611 INFO L93 Difference]: Finished difference Result 1640 states and 2293 transitions. [2023-12-19 12:02:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 12:02:35,612 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 12:02:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:35,615 INFO L225 Difference]: With dead ends: 1640 [2023-12-19 12:02:35,615 INFO L226 Difference]: Without dead ends: 1383 [2023-12-19 12:02:35,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 12:02:35,616 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 463 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:35,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 785 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 12:02:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-19 12:02:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1111. [2023-12-19 12:02:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 906 states have (on average 1.3554083885209713) internal successors, (1228), 908 states have internal predecessors, (1228), 157 states have call successors, (157), 47 states have call predecessors, (157), 47 states have return successors, (157), 155 states have call predecessors, (157), 157 states have call successors, (157) [2023-12-19 12:02:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1542 transitions. [2023-12-19 12:02:35,742 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1542 transitions. Word has length 94 [2023-12-19 12:02:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:35,742 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1542 transitions. [2023-12-19 12:02:35,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1542 transitions. [2023-12-19 12:02:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 12:02:35,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:35,743 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:35,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:35,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:35,948 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:35,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1189454965, now seen corresponding path program 1 times [2023-12-19 12:02:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:35,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530673625] [2023-12-19 12:02:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:35,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478352159] [2023-12-19 12:02:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:35,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:35,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:35,966 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:35,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 12:02:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:36,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 12:02:36,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 138 proven. 9 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-12-19 12:02:36,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:02:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 12:02:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530673625] [2023-12-19 12:02:36,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478352159] [2023-12-19 12:02:36,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478352159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:02:36,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:02:36,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-19 12:02:36,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555424134] [2023-12-19 12:02:36,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:02:36,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 12:02:36,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 12:02:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-19 12:02:36,319 INFO L87 Difference]: Start difference. First operand 1111 states and 1542 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 12:02:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:38,136 INFO L93 Difference]: Finished difference Result 3143 states and 4371 transitions. [2023-12-19 12:02:38,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-19 12:02:38,137 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 94 [2023-12-19 12:02:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:38,143 INFO L225 Difference]: With dead ends: 3143 [2023-12-19 12:02:38,143 INFO L226 Difference]: Without dead ends: 2566 [2023-12-19 12:02:38,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=879, Invalid=3281, Unknown=0, NotChecked=0, Total=4160 [2023-12-19 12:02:38,146 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1583 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:38,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1338 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 12:02:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2023-12-19 12:02:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1546. [2023-12-19 12:02:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1258 states have (on average 1.3529411764705883) internal successors, (1702), 1266 states have internal predecessors, (1702), 215 states have call successors, (215), 72 states have call predecessors, (215), 72 states have return successors, (215), 207 states have call predecessors, (215), 215 states have call successors, (215) [2023-12-19 12:02:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2132 transitions. [2023-12-19 12:02:38,311 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2132 transitions. Word has length 94 [2023-12-19 12:02:38,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:38,311 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 2132 transitions. [2023-12-19 12:02:38,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 4 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-19 12:02:38,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2132 transitions. [2023-12-19 12:02:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 12:02:38,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:38,312 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:38,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:38,517 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:38,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1471982518, now seen corresponding path program 1 times [2023-12-19 12:02:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807915282] [2023-12-19 12:02:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:38,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273651462] [2023-12-19 12:02:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:38,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:38,530 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:38,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 12:02:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:38,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 12:02:38,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:02:43,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:02:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807915282] [2023-12-19 12:02:43,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273651462] [2023-12-19 12:02:43,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273651462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:02:43,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:02:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:02:43,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782050160] [2023-12-19 12:02:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:02:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:02:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:02:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:02:43,441 INFO L87 Difference]: Start difference. First operand 1546 states and 2132 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:02:52,120 INFO L93 Difference]: Finished difference Result 2287 states and 3189 transitions. [2023-12-19 12:02:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 12:02:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 12:02:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:02:52,126 INFO L225 Difference]: With dead ends: 2287 [2023-12-19 12:02:52,126 INFO L226 Difference]: Without dead ends: 1850 [2023-12-19 12:02:52,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 12:02:52,127 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 544 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:02:52,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 778 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 12:02:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2023-12-19 12:02:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1548. [2023-12-19 12:02:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1260 states have (on average 1.3523809523809525) internal successors, (1704), 1268 states have internal predecessors, (1704), 215 states have call successors, (215), 72 states have call predecessors, (215), 72 states have return successors, (215), 207 states have call predecessors, (215), 215 states have call successors, (215) [2023-12-19 12:02:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2134 transitions. [2023-12-19 12:02:52,288 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2134 transitions. Word has length 94 [2023-12-19 12:02:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:02:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2134 transitions. [2023-12-19 12:02:52,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:02:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2134 transitions. [2023-12-19 12:02:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 12:02:52,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:02:52,289 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:02:52,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 12:02:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:52,491 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:02:52,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:02:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1714049596, now seen corresponding path program 1 times [2023-12-19 12:02:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:02:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016536192] [2023-12-19 12:02:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:02:52,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:02:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897877031] [2023-12-19 12:02:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:02:52,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:02:52,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:02:52,502 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:02:52,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 12:02:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:02:52,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:02:52,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:02:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:02:56,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:02:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:02:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016536192] [2023-12-19 12:02:56,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:02:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897877031] [2023-12-19 12:02:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897877031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:02:56,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:02:56,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:02:56,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746458941] [2023-12-19 12:02:56,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:02:56,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:02:56,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:02:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:02:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:02:56,693 INFO L87 Difference]: Start difference. First operand 1548 states and 2134 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:03:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:03:05,325 INFO L93 Difference]: Finished difference Result 2623 states and 3665 transitions. [2023-12-19 12:03:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 12:03:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 12:03:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:03:05,332 INFO L225 Difference]: With dead ends: 2623 [2023-12-19 12:03:05,332 INFO L226 Difference]: Without dead ends: 1868 [2023-12-19 12:03:05,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 12:03:05,334 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 376 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:03:05,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 880 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 12:03:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-12-19 12:03:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1562. [2023-12-19 12:03:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1274 states have (on average 1.3532182103610675) internal successors, (1724), 1282 states have internal predecessors, (1724), 215 states have call successors, (215), 72 states have call predecessors, (215), 72 states have return successors, (215), 207 states have call predecessors, (215), 215 states have call successors, (215) [2023-12-19 12:03:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2154 transitions. [2023-12-19 12:03:05,505 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2154 transitions. Word has length 94 [2023-12-19 12:03:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:03:05,505 INFO L495 AbstractCegarLoop]: Abstraction has 1562 states and 2154 transitions. [2023-12-19 12:03:05,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:03:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2154 transitions. [2023-12-19 12:03:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-19 12:03:05,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:03:05,506 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:03:05,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-19 12:03:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:03:05,711 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:03:05,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:03:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 904702970, now seen corresponding path program 1 times [2023-12-19 12:03:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:03:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770797839] [2023-12-19 12:03:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:03:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:03:05,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:03:05,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571222119] [2023-12-19 12:03:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:03:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:03:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:03:05,722 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:03:05,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 12:03:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:03:05,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 12:03:05,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:03:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 12:03:09,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:03:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:03:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770797839] [2023-12-19 12:03:09,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:03:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571222119] [2023-12-19 12:03:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571222119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:03:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:03:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 12:03:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708197868] [2023-12-19 12:03:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:03:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:03:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:03:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:03:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:03:09,919 INFO L87 Difference]: Start difference. First operand 1562 states and 2154 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:03:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:03:20,584 INFO L93 Difference]: Finished difference Result 2603 states and 3637 transitions. [2023-12-19 12:03:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-19 12:03:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2023-12-19 12:03:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:03:20,595 INFO L225 Difference]: With dead ends: 2603 [2023-12-19 12:03:20,596 INFO L226 Difference]: Without dead ends: 1848 [2023-12-19 12:03:20,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 12:03:20,598 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 12:03:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 818 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 12:03:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2023-12-19 12:03:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1564. [2023-12-19 12:03:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1276 states have (on average 1.3526645768025078) internal successors, (1726), 1284 states have internal predecessors, (1726), 215 states have call successors, (215), 72 states have call predecessors, (215), 72 states have return successors, (215), 207 states have call predecessors, (215), 215 states have call successors, (215) [2023-12-19 12:03:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2156 transitions. [2023-12-19 12:03:20,765 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2156 transitions. Word has length 94 [2023-12-19 12:03:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:03:20,765 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 2156 transitions. [2023-12-19 12:03:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 12:03:20,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2156 transitions. [2023-12-19 12:03:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 12:03:20,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:03:20,766 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:03:20,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-19 12:03:20,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:03:20,966 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:03:20,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:03:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash 438088529, now seen corresponding path program 1 times [2023-12-19 12:03:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:03:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903586074] [2023-12-19 12:03:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:03:20,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:03:20,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:03:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365603419] [2023-12-19 12:03:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:03:20,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:03:20,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:03:20,978 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:03:20,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 12:03:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:03:21,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-19 12:03:21,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:04:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 12:04:29,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-19 12:14:51,075 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 12:14:51,078 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 12:14:51,078 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 12:14:51,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 12:14:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:14:51,284 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 96 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-19 12:14:51,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:14:51,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 12:14:51,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:14:51 BoogieIcfgContainer [2023-12-19 12:14:51,297 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 12:14:51,297 INFO L158 Benchmark]: Toolchain (without parser) took 861085.26ms. Allocated memory was 197.1MB in the beginning and 1.1GB in the end (delta: 874.5MB). Free memory was 151.9MB in the beginning and 851.0MB in the end (delta: -699.1MB). Peak memory consumption was 643.2MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,297 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:14:51,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.27ms. Allocated memory is still 197.1MB. Free memory was 151.9MB in the beginning and 137.9MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.84ms. Allocated memory is still 197.1MB. Free memory was 137.9MB in the beginning and 134.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,298 INFO L158 Benchmark]: Boogie Preprocessor took 41.43ms. Allocated memory is still 197.1MB. Free memory was 134.3MB in the beginning and 129.0MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,298 INFO L158 Benchmark]: RCFGBuilder took 526.76ms. Allocated memory is still 197.1MB. Free memory was 129.0MB in the beginning and 103.3MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,298 INFO L158 Benchmark]: TraceAbstraction took 860237.83ms. Allocated memory was 197.1MB in the beginning and 1.1GB in the end (delta: 874.5MB). Free memory was 102.3MB in the beginning and 851.0MB in the end (delta: -748.7MB). Peak memory consumption was 593.9MB. Max. memory is 8.0GB. [2023-12-19 12:14:51,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 197.1MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.27ms. Allocated memory is still 197.1MB. Free memory was 151.9MB in the beginning and 137.9MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.84ms. Allocated memory is still 197.1MB. Free memory was 137.9MB in the beginning and 134.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.43ms. Allocated memory is still 197.1MB. Free memory was 134.3MB in the beginning and 129.0MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 526.76ms. Allocated memory is still 197.1MB. Free memory was 129.0MB in the beginning and 103.3MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 860237.83ms. Allocated memory was 197.1MB in the beginning and 1.1GB in the end (delta: 874.5MB). Free memory was 102.3MB in the beginning and 851.0MB in the end (delta: -748.7MB). Peak memory consumption was 593.9MB. 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 96 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-3-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.2s, OverallIterations: 24, TraceHistogramMax: 13, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 99.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 9103 SdHoareTripleChecker+Valid, 46.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9057 mSDsluCounter, 12839 SdHoareTripleChecker+Invalid, 44.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10252 mSDsCounter, 1515 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11663 IncrementalHoareTripleChecker+Invalid, 13180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1515 mSolverCounterUnsat, 2587 mSDtfsCounter, 11663 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3077 GetRequests, 2457 SyntacticMatches, 1 SemanticMatches, 619 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8168 ImplicationChecksByTransitivity, 66.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1564occurred in iteration=23, InterpolantAutomatonStates: 499, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 23 MinimizatonAttempts, 4677 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 57.8s InterpolantComputationTime, 2218 NumberOfCodeBlocks, 2218 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2654 ConstructedInterpolants, 7 QuantifiedInterpolants, 29755 SizeOfPredicates, 306 NumberOfNonLiveVariables, 6068 ConjunctsInSsa, 434 ConjunctsInUnsatCore, 29 InterpolantComputations, 18 PerfectInterpolantSequences, 8829/9048 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