/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/nla-digbench-scaling/egcd-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 19:45:03,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 19:45:03,761 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 19:45:03,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 19:45:03,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 19:45:03,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 19:45:03,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 19:45:03,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 19:45:03,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 19:45:03,796 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 19:45:03,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 19:45:03,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 19:45:03,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 19:45:03,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 19:45:03,797 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 19:45:03,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 19:45:03,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 19:45:03,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 19:45:03,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 19:45:03,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 19:45:03,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 19:45:03,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 19:45:03,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 19:45:03,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 19:45:03,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 19:45:03,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 19:45:03,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 19:45:03,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 19:45:03,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 19:45:03,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 19:45:03,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 19:45:03,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 19:45:03,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 19:45:03,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 19:45:03,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 19:45:03,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 19:45:03,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 19:45:03,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 19:45:03,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 19:45:03,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 19:45:03,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 19:45:03,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 19:45:03,993 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 19:45:03,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c [2023-12-19 19:45:05,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 19:45:05,178 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 19:45:05,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c [2023-12-19 19:45:05,188 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53630418/3b239567d12342c8bde5fb99ca2b8fd8/FLAGa31419c76 [2023-12-19 19:45:05,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53630418/3b239567d12342c8bde5fb99ca2b8fd8 [2023-12-19 19:45:05,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 19:45:05,203 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 19:45:05,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 19:45:05,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 19:45:05,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 19:45:05,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6c5243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05, skipping insertion in model container [2023-12-19 19:45:05,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 19:45:05,325 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2023-12-19 19:45:05,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 19:45:05,342 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 19:45:05,349 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2023-12-19 19:45:05,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 19:45:05,362 INFO L206 MainTranslator]: Completed translation [2023-12-19 19:45:05,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05 WrapperNode [2023-12-19 19:45:05,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 19:45:05,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 19:45:05,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 19:45:05,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 19:45:05,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,381 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-12-19 19:45:05,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 19:45:05,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 19:45:05,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 19:45:05,381 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 19:45:05,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,395 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 19:45:05,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 19:45:05,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 19:45:05,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 19:45:05,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 19:45:05,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (1/1) ... [2023-12-19 19:45:05,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 19:45:05,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:05,437 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 19:45:05,461 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 19:45:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 19:45:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 19:45:05,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 19:45:05,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 19:45:05,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 19:45:05,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 19:45:05,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 19:45:05,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 19:45:05,518 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 19:45:05,520 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 19:45:05,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 19:45:05,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 19:45:05,693 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 19:45:05,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:45:05 BoogieIcfgContainer [2023-12-19 19:45:05,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 19:45:05,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 19:45:05,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 19:45:05,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 19:45:05,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 07:45:05" (1/3) ... [2023-12-19 19:45:05,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50932d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:45:05, skipping insertion in model container [2023-12-19 19:45:05,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:45:05" (2/3) ... [2023-12-19 19:45:05,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50932d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 07:45:05, skipping insertion in model container [2023-12-19 19:45:05,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:45:05" (3/3) ... [2023-12-19 19:45:05,699 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound2.c [2023-12-19 19:45:05,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 19:45:05,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 19:45:05,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 19:45:05,760 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;@229aeb6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 19:45:05,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 19:45:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 19:45:05,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 19:45:05,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:05,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:05,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2138951705, now seen corresponding path program 1 times [2023-12-19 19:45:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109019493] [2023-12-19 19:45:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 19:45:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 19:45:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:45:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109019493] [2023-12-19 19:45:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109019493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:45:05,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:45:05,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 19:45:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641529786] [2023-12-19 19:45:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:45:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 19:45:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 19:45:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 19:45:05,944 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 19:45:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:05,964 INFO L93 Difference]: Finished difference Result 52 states and 84 transitions. [2023-12-19 19:45:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 19:45:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-19 19:45:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:05,970 INFO L225 Difference]: With dead ends: 52 [2023-12-19 19:45:05,970 INFO L226 Difference]: Without dead ends: 25 [2023-12-19 19:45:05,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 19:45:05,974 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:05,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:45:05,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-19 19:45:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-19 19:45:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 19:45:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-12-19 19:45:05,996 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 17 [2023-12-19 19:45:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:05,996 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-12-19 19:45:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-19 19:45:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-12-19 19:45:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 19:45:05,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:05,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:05,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 19:45:05,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:05,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -443127421, now seen corresponding path program 1 times [2023-12-19 19:45:05,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:05,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888262349] [2023-12-19 19:45:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:05,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 19:45:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 19:45:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 19:45:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888262349] [2023-12-19 19:45:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888262349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:45:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:45:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 19:45:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329546422] [2023-12-19 19:45:06,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:45:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 19:45:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 19:45:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 19:45:06,087 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:45:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:06,101 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2023-12-19 19:45:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 19:45:06,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-19 19:45:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:06,102 INFO L225 Difference]: With dead ends: 37 [2023-12-19 19:45:06,102 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 19:45:06,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 19:45:06,103 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:06,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:45:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 19:45:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 19:45:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 19:45:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-12-19 19:45:06,109 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 18 [2023-12-19 19:45:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:06,109 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-12-19 19:45:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:45:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-12-19 19:45:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-19 19:45:06,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:06,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:06,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 19:45:06,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:06,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash -441459125, now seen corresponding path program 1 times [2023-12-19 19:45:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:06,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507683447] [2023-12-19 19:45:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:06,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:06,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924191243] [2023-12-19 19:45:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:06,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:06,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:06,144 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 19:45:06,145 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 19:45:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 19:45:06,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 19:45:06,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 19:45:06,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:06,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507683447] [2023-12-19 19:45:06,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:06,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924191243] [2023-12-19 19:45:06,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924191243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:45:06,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:45:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 19:45:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466695203] [2023-12-19 19:45:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:45:06,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 19:45:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 19:45:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 19:45:06,334 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:45:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:06,417 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2023-12-19 19:45:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 19:45:06,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-19 19:45:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:06,418 INFO L225 Difference]: With dead ends: 44 [2023-12-19 19:45:06,418 INFO L226 Difference]: Without dead ends: 42 [2023-12-19 19:45:06,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-19 19:45:06,419 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:06,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 165 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:45:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-19 19:45:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-19 19:45:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 19:45:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-12-19 19:45:06,427 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 18 [2023-12-19 19:45:06,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:06,427 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-12-19 19:45:06,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 19:45:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2023-12-19 19:45:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 19:45:06,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:06,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:06,449 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 19:45:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:06,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:06,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1203735897, now seen corresponding path program 1 times [2023-12-19 19:45:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668713626] [2023-12-19 19:45:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:06,644 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:06,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582449222] [2023-12-19 19:45:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:06,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:06,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:06,661 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 19:45:06,663 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 19:45:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:06,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 19:45:06,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 19:45:06,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668713626] [2023-12-19 19:45:07,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582449222] [2023-12-19 19:45:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582449222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 19:45:07,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 19:45:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-19 19:45:07,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340720715] [2023-12-19 19:45:07,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 19:45:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 19:45:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-19 19:45:07,012 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 19:45:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:07,138 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2023-12-19 19:45:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 19:45:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-12-19 19:45:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:07,139 INFO L225 Difference]: With dead ends: 48 [2023-12-19 19:45:07,139 INFO L226 Difference]: Without dead ends: 46 [2023-12-19 19:45:07,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-19 19:45:07,140 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:07,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 132 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:45:07,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-19 19:45:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2023-12-19 19:45:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.28) internal successors, (32), 27 states have internal predecessors, (32), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 19:45:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2023-12-19 19:45:07,147 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 23 [2023-12-19 19:45:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:07,147 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2023-12-19 19:45:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-19 19:45:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2023-12-19 19:45:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 19:45:07,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:07,148 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:07,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 19:45:07,352 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,SelfDestructingSolverStorable3 [2023-12-19 19:45:07,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:07,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 705122187, now seen corresponding path program 1 times [2023-12-19 19:45:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:07,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869634932] [2023-12-19 19:45:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:07,361 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:07,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536604864] [2023-12-19 19:45:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:07,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:07,363 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 19:45:07,364 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 19:45:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:07,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 19:45:07,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 19:45:07,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869634932] [2023-12-19 19:45:07,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536604864] [2023-12-19 19:45:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536604864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 19:45:07,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 19:45:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-19 19:45:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938172407] [2023-12-19 19:45:07,510 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:07,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 19:45:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 19:45:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 19:45:07,511 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 19:45:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:07,617 INFO L93 Difference]: Finished difference Result 70 states and 102 transitions. [2023-12-19 19:45:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 19:45:07,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-12-19 19:45:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:07,621 INFO L225 Difference]: With dead ends: 70 [2023-12-19 19:45:07,624 INFO L226 Difference]: Without dead ends: 66 [2023-12-19 19:45:07,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-19 19:45:07,630 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:07,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 87 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:45:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-19 19:45:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-19 19:45:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 38 states have internal predecessors, (46), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 19:45:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2023-12-19 19:45:07,643 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 28 [2023-12-19 19:45:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:07,643 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2023-12-19 19:45:07,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 19:45:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2023-12-19 19:45:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 19:45:07,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:07,644 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:07,651 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 19:45:07,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:07,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:07,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1795283768, now seen corresponding path program 1 times [2023-12-19 19:45:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31695097] [2023-12-19 19:45:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:07,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76701024] [2023-12-19 19:45:07,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:07,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:07,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:07,888 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 19:45:07,917 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 19:45:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:07,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 19:45:07,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 19:45:07,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 19:45:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31695097] [2023-12-19 19:45:07,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:07,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76701024] [2023-12-19 19:45:07,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76701024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 19:45:07,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 19:45:07,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 19:45:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492045073] [2023-12-19 19:45:07,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 19:45:07,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 19:45:07,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 19:45:07,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 19:45:07,945 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-19 19:45:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:07,987 INFO L93 Difference]: Finished difference Result 82 states and 118 transitions. [2023-12-19 19:45:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 19:45:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-12-19 19:45:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:07,990 INFO L225 Difference]: With dead ends: 82 [2023-12-19 19:45:07,991 INFO L226 Difference]: Without dead ends: 80 [2023-12-19 19:45:07,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 19:45:07,992 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:07,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:45:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-19 19:45:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2023-12-19 19:45:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 44 states have internal predecessors, (49), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 19:45:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2023-12-19 19:45:08,015 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 34 [2023-12-19 19:45:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:08,015 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2023-12-19 19:45:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-19 19:45:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2023-12-19 19:45:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 19:45:08,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:08,017 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:08,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 19:45:08,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:08,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:08,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash -427827123, now seen corresponding path program 1 times [2023-12-19 19:45:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264861420] [2023-12-19 19:45:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:08,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380599850] [2023-12-19 19:45:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:08,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:08,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:08,236 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 19:45:08,276 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 19:45:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:08,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 19:45:08,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 19:45:08,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 19:45:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264861420] [2023-12-19 19:45:08,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380599850] [2023-12-19 19:45:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380599850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:45:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:45:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2023-12-19 19:45:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394631682] [2023-12-19 19:45:08,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:08,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 19:45:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 19:45:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 19:45:08,386 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 19:45:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:08,430 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2023-12-19 19:45:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 19:45:08,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 37 [2023-12-19 19:45:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:08,432 INFO L225 Difference]: With dead ends: 116 [2023-12-19 19:45:08,432 INFO L226 Difference]: Without dead ends: 97 [2023-12-19 19:45:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 19:45:08,433 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:08,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:45:08,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-19 19:45:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-12-19 19:45:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 61 states have internal predecessors, (67), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 19:45:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2023-12-19 19:45:08,443 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 37 [2023-12-19 19:45:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:08,443 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2023-12-19 19:45:08,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 19:45:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2023-12-19 19:45:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-19 19:45:08,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:08,444 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:08,451 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 19:45:08,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:08,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:08,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash -426158827, now seen corresponding path program 1 times [2023-12-19 19:45:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:08,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657989893] [2023-12-19 19:45:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:08,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:08,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343041894] [2023-12-19 19:45:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:08,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:08,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:08,676 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 19:45:08,677 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 19:45:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:08,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 19:45:08,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-19 19:45:08,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:08,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657989893] [2023-12-19 19:45:08,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:08,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343041894] [2023-12-19 19:45:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343041894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 19:45:08,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 19:45:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-19 19:45:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17740020] [2023-12-19 19:45:08,880 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:08,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 19:45:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 19:45:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 19:45:08,881 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 19:45:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:08,948 INFO L93 Difference]: Finished difference Result 101 states and 127 transitions. [2023-12-19 19:45:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 19:45:08,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-12-19 19:45:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:08,949 INFO L225 Difference]: With dead ends: 101 [2023-12-19 19:45:08,949 INFO L226 Difference]: Without dead ends: 98 [2023-12-19 19:45:08,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-19 19:45:08,950 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:08,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 107 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 19:45:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-19 19:45:08,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-19 19:45:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.206896551724138) internal successors, (70), 64 states have internal predecessors, (70), 28 states have call successors, (28), 12 states have call predecessors, (28), 11 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 19:45:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2023-12-19 19:45:08,959 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 37 [2023-12-19 19:45:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:08,959 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2023-12-19 19:45:08,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 19:45:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2023-12-19 19:45:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-19 19:45:08,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:08,960 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:08,968 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 19:45:09,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:09,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:09,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1298990710, now seen corresponding path program 1 times [2023-12-19 19:45:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:09,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725468903] [2023-12-19 19:45:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:09,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:09,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151499931] [2023-12-19 19:45:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:09,171 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 19:45:09,190 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 19:45:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 19:45:09,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 19:45:09,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 19:45:09,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-19 19:45:09,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725468903] [2023-12-19 19:45:09,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151499931] [2023-12-19 19:45:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151499931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:45:09,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:45:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-19 19:45:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261596543] [2023-12-19 19:45:09,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:09,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 19:45:09,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 19:45:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-19 19:45:09,353 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 19:45:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:09,450 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2023-12-19 19:45:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 19:45:09,451 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2023-12-19 19:45:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:09,452 INFO L225 Difference]: With dead ends: 113 [2023-12-19 19:45:09,452 INFO L226 Difference]: Without dead ends: 101 [2023-12-19 19:45:09,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-19 19:45:09,452 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:09,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 168 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 19:45:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-19 19:45:09,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-12-19 19:45:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 65 states have internal predecessors, (69), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 19:45:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2023-12-19 19:45:09,463 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 39 [2023-12-19 19:45:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:09,463 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2023-12-19 19:45:09,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 19:45:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2023-12-19 19:45:09,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-19 19:45:09,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:09,464 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:09,471 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 19:45:09,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:09,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:09,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1786533347, now seen corresponding path program 2 times [2023-12-19 19:45:09,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:09,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067664858] [2023-12-19 19:45:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:09,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108780254] [2023-12-19 19:45:09,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 19:45:09,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:09,686 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 19:45:09,688 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 19:45:09,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 19:45:09,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 19:45:09,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 19:45:09,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 19:45:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 19:45:09,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 19:45:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 19:45:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 19:45:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067664858] [2023-12-19 19:45:09,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 19:45:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108780254] [2023-12-19 19:45:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108780254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 19:45:09,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 19:45:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-19 19:45:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514037918] [2023-12-19 19:45:09,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 19:45:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 19:45:09,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 19:45:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 19:45:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-19 19:45:09,973 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-19 19:45:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 19:45:10,309 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2023-12-19 19:45:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 19:45:10,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 42 [2023-12-19 19:45:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 19:45:10,312 INFO L225 Difference]: With dead ends: 126 [2023-12-19 19:45:10,312 INFO L226 Difference]: Without dead ends: 119 [2023-12-19 19:45:10,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-12-19 19:45:10,313 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 19:45:10,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 98 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 19:45:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-19 19:45:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2023-12-19 19:45:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.15625) internal successors, (74), 70 states have internal predecessors, (74), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-19 19:45:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-12-19 19:45:10,330 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 42 [2023-12-19 19:45:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 19:45:10,330 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-12-19 19:45:10,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-19 19:45:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-12-19 19:45:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-19 19:45:10,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 19:45:10,333 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:10,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 19:45:10,541 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,SelfDestructingSolverStorable9 [2023-12-19 19:45:10,541 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 19:45:10,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 19:45:10,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1635373379, now seen corresponding path program 2 times [2023-12-19 19:45:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 19:45:10,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852583615] [2023-12-19 19:45:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 19:45:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 19:45:10,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 19:45:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993867721] [2023-12-19 19:45:10,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 19:45:10,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:10,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 19:45:10,563 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 19:45:10,564 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 19:45:10,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 19:45:10,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-19 19:45:10,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-19 19:45:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 19:45:10,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-19 19:45:10,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-19 19:45:10,627 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 19:45:10,648 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 19:45:10,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 19:45:10,835 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 19:45:10,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 19:45:10,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 07:45:10 BoogieIcfgContainer [2023-12-19 19:45:10,857 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 19:45:10,857 INFO L158 Benchmark]: Toolchain (without parser) took 5654.91ms. Allocated memory is still 264.2MB. Free memory was 218.4MB in the beginning and 120.3MB in the end (delta: 98.1MB). Peak memory consumption was 98.8MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 220.2MB. Free memory was 168.5MB in the beginning and 168.5MB in the end (delta: 96.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 264.2MB. Free memory was 218.4MB in the beginning and 206.6MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.13ms. Allocated memory is still 264.2MB. Free memory was 206.6MB in the beginning and 205.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: Boogie Preprocessor took 19.33ms. Allocated memory is still 264.2MB. Free memory was 205.1MB in the beginning and 203.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: RCFGBuilder took 292.62ms. Allocated memory is still 264.2MB. Free memory was 203.0MB in the beginning and 190.8MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,858 INFO L158 Benchmark]: TraceAbstraction took 5162.24ms. Allocated memory is still 264.2MB. Free memory was 190.4MB in the beginning and 120.3MB in the end (delta: 70.1MB). Peak memory consumption was 70.5MB. Max. memory is 8.0GB. [2023-12-19 19:45:10,859 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 220.2MB. Free memory was 168.5MB in the beginning and 168.5MB in the end (delta: 96.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 157.74ms. Allocated memory is still 264.2MB. Free memory was 218.4MB in the beginning and 206.6MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.13ms. Allocated memory is still 264.2MB. Free memory was 206.6MB in the beginning and 205.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.33ms. Allocated memory is still 264.2MB. Free memory was 205.1MB in the beginning and 203.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 292.62ms. Allocated memory is still 264.2MB. Free memory was 203.0MB in the beginning and 190.8MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 5162.24ms. Allocated memory is still 264.2MB. Free memory was 190.4MB in the beginning and 120.3MB in the end (delta: 70.1MB). Peak memory consumption was 70.5MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=4, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=4, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=4, b=1, counter=0, p=1, q=0, r=0, s=1, x=4, y=1] [L34] EXPR counter++ VAL [a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=4, b=1, counter=1, p=1, q=0, r=0, s=1, x=4, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=1, counter=1, p=1, q=0, r=-1, s=1, x=4, y=1] [L34] EXPR counter++ VAL [a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L34] COND TRUE counter++<2 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L39] COND FALSE !(!(a != b)) VAL [a=3, b=1, counter=2, p=1, q=0, r=-1, s=1, x=4, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=2, b=1, counter=2, p=1, q=0, r=-2, s=1, x=4, y=1] [L34] EXPR counter++ VAL [a=2, b=1, counter=3, p=1, q=0, r=-2, s=1, x=4, y=1] [L34] COND FALSE !(counter++<2) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=3] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 1099 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 819 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 717 IncrementalHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 280 mSDtfsCounter, 717 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 29 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 349 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 1323 SizeOfPredicates, 26 NumberOfNonLiveVariables, 791 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 245/277 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 proved your program to be incorrect! [2023-12-19 19:45:10,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...