./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:53:31,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:53:31,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:53:31,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:53:31,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:53:32,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:53:32,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:53:32,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:53:32,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:53:32,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:53:32,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:53:32,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:53:32,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:53:32,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:53:32,029 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:53:32,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:53:32,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:53:32,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:53:32,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:53:32,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:53:32,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:53:32,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:53:32,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:53:32,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:53:32,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:53:32,033 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:53:32,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:53:32,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:53:32,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:53:32,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:53:32,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:53:32,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:53:32,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:53:32,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:53:32,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:53:32,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:53:32,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:53:32,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:53:32,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:53:32,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:53:32,037 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:53:32,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:53:32,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2024-11-18 13:53:32,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:53:32,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:53:32,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:53:32,348 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:53:32,348 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:53:32,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-11-18 13:53:33,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:53:33,915 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:53:33,915 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2024-11-18 13:53:33,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86f455c3/98e3f0a311cf4639a0b95b17732a33b2/FLAGaaf4bab95 [2024-11-18 13:53:34,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86f455c3/98e3f0a311cf4639a0b95b17732a33b2 [2024-11-18 13:53:34,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:53:34,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:53:34,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:53:34,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:53:34,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:53:34,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e657098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34, skipping insertion in model container [2024-11-18 13:53:34,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:53:34,488 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-11-18 13:53:34,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:53:34,518 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:53:34,531 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c[458,471] [2024-11-18 13:53:34,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:53:34,558 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:53:34,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34 WrapperNode [2024-11-18 13:53:34,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:53:34,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:53:34,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:53:34,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:53:34,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,588 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-11-18 13:53:34,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:53:34,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:53:34,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:53:34,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:53:34,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,619 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]. [2024-11-18 13:53:34,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:53:34,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:53:34,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:53:34,635 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:53:34,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (1/1) ... [2024-11-18 13:53:34,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:53:34,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:34,674 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) [2024-11-18 13:53:34,678 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 [2024-11-18 13:53:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:53:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:53:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:53:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:53:34,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:53:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:53:34,781 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:53:34,784 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:53:34,950 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-18 13:53:34,950 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:53:34,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:53:34,966 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:53:34,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:53:34 BoogieIcfgContainer [2024-11-18 13:53:34,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:53:34,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:53:34,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:53:34,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:53:34,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:53:34" (1/3) ... [2024-11-18 13:53:34,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7edc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:53:34, skipping insertion in model container [2024-11-18 13:53:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:53:34" (2/3) ... [2024-11-18 13:53:34,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7edc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:53:34, skipping insertion in model container [2024-11-18 13:53:34,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:53:34" (3/3) ... [2024-11-18 13:53:34,975 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2024-11-18 13:53:34,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:53:34,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:53:35,050 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:53:35,056 INFO L333 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, 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;@78699963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:53:35,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:53:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:53:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-18 13:53:35,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:35,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:35,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:35,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1819788390, now seen corresponding path program 1 times [2024-11-18 13:53:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:35,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925761823] [2024-11-18 13:53:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925761823] [2024-11-18 13:53:35,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925761823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:35,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:35,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:53:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211084802] [2024-11-18 13:53:35,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:35,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:53:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:53:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:53:35,264 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:35,279 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2024-11-18 13:53:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:53:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-18 13:53:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:35,285 INFO L225 Difference]: With dead ends: 34 [2024-11-18 13:53:35,285 INFO L226 Difference]: Without dead ends: 14 [2024-11-18 13:53:35,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:53:35,290 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:35,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-18 13:53:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-18 13:53:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2024-11-18 13:53:35,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2024-11-18 13:53:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:35,317 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-18 13:53:35,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2024-11-18 13:53:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:53:35,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:35,320 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:35,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:53:35,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:35,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 178441499, now seen corresponding path program 1 times [2024-11-18 13:53:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880855278] [2024-11-18 13:53:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:35,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880855278] [2024-11-18 13:53:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880855278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:53:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78868023] [2024-11-18 13:53:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:53:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:53:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:53:35,411 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:35,446 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-18 13:53:35,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:53:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 13:53:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:35,447 INFO L225 Difference]: With dead ends: 24 [2024-11-18 13:53:35,447 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 13:53:35,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:53:35,449 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:35,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 13:53:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 13:53:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:35,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-18 13:53:35,454 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2024-11-18 13:53:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:35,454 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-18 13:53:35,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-18 13:53:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:53:35,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:35,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:35,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:53:35,458 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:35,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 180228959, now seen corresponding path program 1 times [2024-11-18 13:53:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576263051] [2024-11-18 13:53:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444577116] [2024-11-18 13:53:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:35,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:35,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:35,493 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) [2024-11-18 13:53:35,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:53:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:35,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:53:35,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:35,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:53:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576263051] [2024-11-18 13:53:35,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:35,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444577116] [2024-11-18 13:53:35,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444577116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:53:35,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:53:35,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:53:35,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648935252] [2024-11-18 13:53:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:53:35,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:53:35,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:53:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:53:35,669 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:35,736 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-11-18 13:53:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:53:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 13:53:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:35,737 INFO L225 Difference]: With dead ends: 26 [2024-11-18 13:53:35,737 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 13:53:35,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:53:35,739 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:35,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 13:53:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-18 13:53:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 13:53:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-18 13:53:35,749 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2024-11-18 13:53:35,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:35,749 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-18 13:53:35,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:53:35,749 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-18 13:53:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 13:53:35,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:35,750 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:35,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:53:35,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:35,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:35,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 823572993, now seen corresponding path program 1 times [2024-11-18 13:53:35,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:35,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669462628] [2024-11-18 13:53:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:36,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669462628] [2024-11-18 13:53:36,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669462628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190770025] [2024-11-18 13:53:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:36,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:36,088 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) [2024-11-18 13:53:36,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:53:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:36,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:53:36,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:36,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190770025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:36,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-18 13:53:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284678684] [2024-11-18 13:53:36,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:36,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:53:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:36,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:53:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:53:36,238 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:53:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:36,321 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2024-11-18 13:53:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:53:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2024-11-18 13:53:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:36,323 INFO L225 Difference]: With dead ends: 56 [2024-11-18 13:53:36,323 INFO L226 Difference]: Without dead ends: 48 [2024-11-18 13:53:36,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:53:36,325 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:36,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:53:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-18 13:53:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2024-11-18 13:53:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-18 13:53:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-18 13:53:36,340 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 16 [2024-11-18 13:53:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:36,341 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-18 13:53:36,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:53:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-18 13:53:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 13:53:36,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:36,342 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:36,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:53:36,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 13:53:36,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:36,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash 825360453, now seen corresponding path program 1 times [2024-11-18 13:53:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:36,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762931674] [2024-11-18 13:53:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:36,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996008980] [2024-11-18 13:53:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:36,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:36,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:36,576 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) [2024-11-18 13:53:36,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:53:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:36,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 13:53:36,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:36,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762931674] [2024-11-18 13:53:36,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996008980] [2024-11-18 13:53:36,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996008980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:36,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:53:36,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2024-11-18 13:53:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420657562] [2024-11-18 13:53:36,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:36,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 13:53:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 13:53:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:53:36,846 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:36,948 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2024-11-18 13:53:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:53:36,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-18 13:53:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:36,951 INFO L225 Difference]: With dead ends: 58 [2024-11-18 13:53:36,951 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 13:53:36,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:53:36,953 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:36,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:53:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 13:53:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-18 13:53:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:53:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-11-18 13:53:36,973 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2024-11-18 13:53:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:36,973 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-11-18 13:53:36,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:53:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-11-18 13:53:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:53:36,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:36,974 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:36,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:53:37,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:37,175 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:37,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1696898494, now seen corresponding path program 1 times [2024-11-18 13:53:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:37,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800699579] [2024-11-18 13:53:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 13:53:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46350507] [2024-11-18 13:53:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:53:37,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:37,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:37,196 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) [2024-11-18 13:53:37,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:53:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:53:37,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 13:53:37,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:53:37,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:53:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800699579] [2024-11-18 13:53:37,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46350507] [2024-11-18 13:53:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46350507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:37,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:53:37,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-11-18 13:53:37,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867517625] [2024-11-18 13:53:37,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:37,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:53:37,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:53:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:53:37,653 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:53:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:37,790 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-11-18 13:53:37,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:53:37,791 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-11-18 13:53:37,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:37,792 INFO L225 Difference]: With dead ends: 49 [2024-11-18 13:53:37,792 INFO L226 Difference]: Without dead ends: 43 [2024-11-18 13:53:37,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:53:37,793 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:37,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:53:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-18 13:53:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-18 13:53:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 13:53:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2024-11-18 13:53:37,808 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 22 [2024-11-18 13:53:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:37,808 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2024-11-18 13:53:37,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:53:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2024-11-18 13:53:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-18 13:53:37,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:37,810 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:37,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:53:38,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:38,011 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:38,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2045303987, now seen corresponding path program 2 times [2024-11-18 13:53:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:38,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391480345] [2024-11-18 13:53:38,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:53:38,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:38,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:53:38,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:53:38,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391480345] [2024-11-18 13:53:38,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391480345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237294718] [2024-11-18 13:53:38,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:53:38,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:38,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:38,268 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) [2024-11-18 13:53:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:53:38,323 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:53:38,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:38,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:53:38,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:38,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:53:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237294718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:38,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:38,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2024-11-18 13:53:38,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891563337] [2024-11-18 13:53:38,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:38,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 13:53:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 13:53:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:53:38,514 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-18 13:53:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:38,701 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2024-11-18 13:53:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 13:53:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 40 [2024-11-18 13:53:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:38,703 INFO L225 Difference]: With dead ends: 119 [2024-11-18 13:53:38,703 INFO L226 Difference]: Without dead ends: 114 [2024-11-18 13:53:38,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:53:38,704 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:38,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 109 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:53:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-18 13:53:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2024-11-18 13:53:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 13:53:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2024-11-18 13:53:38,721 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 40 [2024-11-18 13:53:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:38,722 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2024-11-18 13:53:38,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-18 13:53:38,722 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2024-11-18 13:53:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:53:38,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:38,723 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:38,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:53:38,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:38,924 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:38,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -635357324, now seen corresponding path program 2 times [2024-11-18 13:53:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:38,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465019956] [2024-11-18 13:53:38,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:53:38,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:38,953 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:53:38,957 INFO L228 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-18 13:53:38,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395210608] [2024-11-18 13:53:38,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:53:38,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:38,962 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) [2024-11-18 13:53:38,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:53:39,020 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:53:39,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:39,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 13:53:39,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:53:39,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:53:39,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465019956] [2024-11-18 13:53:39,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 13:53:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395210608] [2024-11-18 13:53:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395210608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:39,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:53:39,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-18 13:53:39,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575796379] [2024-11-18 13:53:39,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:39,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 13:53:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:39,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 13:53:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:53:39,545 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 13:53:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:39,843 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2024-11-18 13:53:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:53:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 46 [2024-11-18 13:53:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:39,845 INFO L225 Difference]: With dead ends: 95 [2024-11-18 13:53:39,845 INFO L226 Difference]: Without dead ends: 89 [2024-11-18 13:53:39,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:53:39,846 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:39,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 214 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:53:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-18 13:53:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-18 13:53:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 13:53:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2024-11-18 13:53:39,875 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 46 [2024-11-18 13:53:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:39,876 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2024-11-18 13:53:39,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-18 13:53:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2024-11-18 13:53:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 13:53:39,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:39,880 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:39,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:53:40,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:40,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:40,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:40,082 INFO L85 PathProgramCache]: Analyzing trace with hash -780287977, now seen corresponding path program 3 times [2024-11-18 13:53:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699886614] [2024-11-18 13:53:40,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:53:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:40,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 13:53:40,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 13:53:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699886614] [2024-11-18 13:53:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699886614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320269724] [2024-11-18 13:53:40,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:53:40,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:40,516 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) [2024-11-18 13:53:40,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:53:40,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 13:53:40,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:40,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 13:53:40,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:40,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-18 13:53:41,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320269724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:41,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:41,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 26 [2024-11-18 13:53:41,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277680676] [2024-11-18 13:53:41,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:41,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 13:53:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 13:53:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:53:41,049 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-11-18 13:53:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:41,528 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2024-11-18 13:53:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-18 13:53:41,528 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) Word has length 88 [2024-11-18 13:53:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:41,532 INFO L225 Difference]: With dead ends: 190 [2024-11-18 13:53:41,532 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 13:53:41,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 13:53:41,535 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 125 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:41,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 120 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:53:41,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 13:53:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-18 13:53:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 13:53:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2024-11-18 13:53:41,579 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 88 [2024-11-18 13:53:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:41,580 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2024-11-18 13:53:41,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2024-11-18 13:53:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2024-11-18 13:53:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-18 13:53:41,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:41,585 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:41,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:53:41,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:41,786 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:41,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2069758241, now seen corresponding path program 4 times [2024-11-18 13:53:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:41,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110485263] [2024-11-18 13:53:41,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:53:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:41,862 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:53:41,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 13:53:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110485263] [2024-11-18 13:53:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110485263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907836974] [2024-11-18 13:53:43,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:53:43,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:43,096 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) [2024-11-18 13:53:43,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:53:43,760 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:53:43,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:43,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 13:53:43,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:44,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 13:53:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907836974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:45,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 50 [2024-11-18 13:53:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61042471] [2024-11-18 13:53:45,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:45,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 13:53:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 13:53:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 13:53:45,010 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-11-18 13:53:46,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:53:46,370 INFO L93 Difference]: Finished difference Result 382 states and 405 transitions. [2024-11-18 13:53:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-18 13:53:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) Word has length 184 [2024-11-18 13:53:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:53:46,374 INFO L225 Difference]: With dead ends: 382 [2024-11-18 13:53:46,374 INFO L226 Difference]: Without dead ends: 377 [2024-11-18 13:53:46,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3316, Invalid=5614, Unknown=0, NotChecked=0, Total=8930 [2024-11-18 13:53:46,378 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 287 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:53:46,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 234 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:53:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-18 13:53:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-18 13:53:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 283 states have (on average 1.0035335689045937) internal successors, (284), 283 states have internal predecessors, (284), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 13:53:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2024-11-18 13:53:46,441 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 184 [2024-11-18 13:53:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:53:46,442 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2024-11-18 13:53:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2024-11-18 13:53:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2024-11-18 13:53:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-18 13:53:46,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:53:46,452 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2024-11-18 13:53:46,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:53:46,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 13:53:46,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:53:46,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:53:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1399563153, now seen corresponding path program 5 times [2024-11-18 13:53:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:53:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211003376] [2024-11-18 13:53:46,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:53:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:53:46,975 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-18 13:53:46,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 13:53:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:53:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211003376] [2024-11-18 13:53:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211003376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:53:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827859438] [2024-11-18 13:53:51,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:53:51,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:53:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:53:51,297 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) [2024-11-18 13:53:51,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:53:52,914 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-18 13:53:52,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:53:52,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-18 13:53:52,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:53:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:53:53,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:53:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-18 13:53:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827859438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:53:56,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:53:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 50] total 98 [2024-11-18 13:53:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959242597] [2024-11-18 13:53:56,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:53:56,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-18 13:53:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:53:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-18 13:53:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2024-11-18 13:53:56,123 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-11-18 13:54:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:54:00,452 INFO L93 Difference]: Finished difference Result 766 states and 813 transitions. [2024-11-18 13:54:00,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2024-11-18 13:54:00,453 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) Word has length 376 [2024-11-18 13:54:00,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:54:00,458 INFO L225 Difference]: With dead ends: 766 [2024-11-18 13:54:00,458 INFO L226 Difference]: Without dead ends: 761 [2024-11-18 13:54:00,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=13540, Invalid=22750, Unknown=0, NotChecked=0, Total=36290 [2024-11-18 13:54:00,465 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 596 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:54:00,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 416 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:54:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-18 13:54:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2024-11-18 13:54:00,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 571 states have (on average 1.001751313485114) internal successors, (572), 571 states have internal predecessors, (572), 95 states have call successors, (95), 95 states have call predecessors, (95), 94 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-18 13:54:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 761 transitions. [2024-11-18 13:54:00,545 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 761 transitions. Word has length 376 [2024-11-18 13:54:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:54:00,546 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 761 transitions. [2024-11-18 13:54:00,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2024-11-18 13:54:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 761 transitions. [2024-11-18 13:54:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2024-11-18 13:54:00,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:54:00,562 INFO L215 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2024-11-18 13:54:00,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:54:00,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:54:00,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:54:00,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:54:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1860135025, now seen corresponding path program 6 times [2024-11-18 13:54:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:54:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902590219] [2024-11-18 13:54:00,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:54:00,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:54:01,591 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-18 13:54:01,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:54:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 188 proven. 17672 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2024-11-18 13:54:15,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:54:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902590219] [2024-11-18 13:54:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902590219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:54:15,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553379451] [2024-11-18 13:54:15,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:54:15,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:54:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:54:15,972 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:54:15,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process