./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/geo1-ll_valuebound20.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 6fa47fed70646a19b2beeb4e0b89a260e8455b5fd506269be7803c38c9e5caa2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:40:17,537 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:40:17,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:40:17,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:40:17,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:40:17,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:40:17,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:40:17,650 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:40:17,651 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:40:17,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:40:17,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:40:17,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:40:17,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:40:17,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:40:17,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:40:17,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:40:17,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:40:17,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:40:17,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:40:17,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:40:17,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:40:17,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:40:17,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:40:17,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:40:17,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:40:17,661 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:40:17,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:40:17,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:40:17,661 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:40:17,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:40:17,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:40:17,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:40:17,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:40:17,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:40:17,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:40:17,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:40:17,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:40:17,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:40:17,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:40:17,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:40:17,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:40:17,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:40:17,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fa47fed70646a19b2beeb4e0b89a260e8455b5fd506269be7803c38c9e5caa2 [2024-11-09 22:40:17,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:40:17,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:40:17,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:40:17,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:40:17,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:40:17,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c [2024-11-09 22:40:19,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:40:19,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:40:19,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound20.c [2024-11-09 22:40:19,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec53a480f/079abaa7ef1f41cf81cebd09aaf7457a/FLAGa6b387a02 [2024-11-09 22:40:19,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec53a480f/079abaa7ef1f41cf81cebd09aaf7457a [2024-11-09 22:40:19,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:40:19,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:40:19,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:40:19,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:40:19,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:40:19,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15363f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19, skipping insertion in model container [2024-11-09 22:40:19,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:40:19,849 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/geo1-ll_valuebound20.c[545,558] [2024-11-09 22:40:19,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:40:19,873 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:40:19,884 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/geo1-ll_valuebound20.c[545,558] [2024-11-09 22:40:19,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:40:19,907 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:40:19,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19 WrapperNode [2024-11-09 22:40:19,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:40:19,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:40:19,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:40:19,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:40:19,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,938 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-09 22:40:19,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:40:19,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:40:19,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:40:19,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:40:19,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,967 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]. [2024-11-09 22:40:19,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,970 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:40:19,974 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:40:19,975 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:40:19,975 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:40:19,975 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (1/1) ... [2024-11-09 22:40:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:40:19,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:20,013 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) [2024-11-09 22:40:20,016 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 [2024-11-09 22:40:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:40:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:40:20,065 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:40:20,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:40:20,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:40:20,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:40:20,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:40:20,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:40:20,131 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:40:20,136 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:40:20,297 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 22:40:20,297 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:40:20,313 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:40:20,313 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:40:20,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:40:20 BoogieIcfgContainer [2024-11-09 22:40:20,314 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:40:20,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:40:20,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:40:20,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:40:20,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:40:19" (1/3) ... [2024-11-09 22:40:20,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf35d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:20, skipping insertion in model container [2024-11-09 22:40:20,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:19" (2/3) ... [2024-11-09 22:40:20,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf35d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:20, skipping insertion in model container [2024-11-09 22:40:20,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:40:20" (3/3) ... [2024-11-09 22:40:20,325 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound20.c [2024-11-09 22:40:20,345 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:40:20,346 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:40:20,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:40:20,420 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;@690fb6ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:40:20,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:40:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:20,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:40:20,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:20,433 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:20,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:20,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 223259572, now seen corresponding path program 1 times [2024-11-09 22:40:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343008332] [2024-11-09 22:40:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:40:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:40:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:40:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:40:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343008332] [2024-11-09 22:40:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343008332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:20,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:40:20,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:40:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358511422] [2024-11-09 22:40:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:20,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:40:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:40:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:40:20,665 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:40:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:20,687 INFO L93 Difference]: Finished difference Result 55 states and 76 transitions. [2024-11-09 22:40:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:40:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-09 22:40:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:20,698 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:40:20,699 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 22:40:20,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:40:20,704 INFO L432 NwaCegarLoop]: 33 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, 33 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 [2024-11-09 22:40:20,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 22:40:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 22:40:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 22:40:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-09 22:40:20,741 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-09 22:40:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:20,742 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-09 22:40:20,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:40:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-09 22:40:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:40:20,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:20,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:20,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:40:20,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:20,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash -911261034, now seen corresponding path program 1 times [2024-11-09 22:40:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:20,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842936094] [2024-11-09 22:40:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:20,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:40:20,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364042476] [2024-11-09 22:40:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:20,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:20,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:20,805 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) [2024-11-09 22:40:20,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:40:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:20,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:40:20,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:21,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:40:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842936094] [2024-11-09 22:40:21,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:40:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364042476] [2024-11-09 22:40:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364042476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:40:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:40:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483295034] [2024-11-09 22:40:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:21,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:40:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:40:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:40:21,092 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 22:40:21,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:21,144 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-09 22:40:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:40:21,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-11-09 22:40:21,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:21,146 INFO L225 Difference]: With dead ends: 37 [2024-11-09 22:40:21,146 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:40:21,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:40:21,147 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:21,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:40:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-09 22:40:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-09 22:40:21,157 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 31 [2024-11-09 22:40:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:21,158 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-09 22:40:21,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 22:40:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-09 22:40:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 22:40:21,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:21,160 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:21,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:40:21,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:21,364 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:21,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash -513839387, now seen corresponding path program 1 times [2024-11-09 22:40:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:21,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523009375] [2024-11-09 22:40:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:40:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:40:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:40:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:40:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:40:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523009375] [2024-11-09 22:40:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523009375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:40:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248714205] [2024-11-09 22:40:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:21,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:21,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:21,898 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) [2024-11-09 22:40:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:40:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:21,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:40:21,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:22,133 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:40:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248714205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:40:22,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:40:22,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 22:40:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577082470] [2024-11-09 22:40:22,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:40:22,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:40:22,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:40:22,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:40:22,136 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:40:22,179 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-09 22:40:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:40:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-09 22:40:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:40:22,181 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:40:22,181 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 22:40:22,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:40:22,183 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:40:22,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:40:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 22:40:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-09 22:40:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 22:40:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-09 22:40:22,189 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2024-11-09 22:40:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:40:22,189 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-09 22:40:22,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:40:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-09 22:40:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 22:40:22,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:40:22,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:40:22,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:40:22,394 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,SelfDestructingSolverStorable2 [2024-11-09 22:40:22,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:40:22,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:40:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1703119370, now seen corresponding path program 1 times [2024-11-09 22:40:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:40:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997838854] [2024-11-09 22:40:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:40:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:40:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292940557] [2024-11-09 22:40:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:40:22,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:40:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:40:22,422 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) [2024-11-09 22:40:22,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:40:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:40:22,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 22:40:22,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:40:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 22:40:22,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:40:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 3 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:40:27,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:40:27,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997838854] [2024-11-09 22:40:27,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:40:27,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292940557] [2024-11-09 22:40:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292940557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:40:27,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:40:27,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2024-11-09 22:40:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847780096] [2024-11-09 22:40:27,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:40:27,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:40:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:40:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:40:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2024-11-09 22:40:27,011 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 22:40:37,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:40:49,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:40:53,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:40:57,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:41:01,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:41:05,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:41:09,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:41:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:41:09,728 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2024-11-09 22:41:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:41:09,729 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 39 [2024-11-09 22:41:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:41:09,730 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:41:09,730 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 22:41:09,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2024-11-09 22:41:09,731 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:41:09,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 148 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 7 Unknown, 0 Unchecked, 28.3s Time] [2024-11-09 22:41:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 22:41:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-09 22:41:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:41:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-09 22:41:09,743 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2024-11-09 22:41:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:41:09,743 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-09 22:41:09,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 22:41:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-09 22:41:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 22:41:09,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:41:09,745 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:41:09,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:41:09,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:41:09,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:41:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:41:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash -799821947, now seen corresponding path program 1 times [2024-11-09 22:41:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:41:09,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780835380] [2024-11-09 22:41:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:41:09,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:41:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:41:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:41:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:41:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:41:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:41:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-09 22:41:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:41:10,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:41:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780835380] [2024-11-09 22:41:10,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780835380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:41:10,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706827782] [2024-11-09 22:41:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:41:10,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:41:10,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:41:10,250 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) [2024-11-09 22:41:10,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:41:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:41:10,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:41:10,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:41:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:41:18,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:41:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 22:41:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706827782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:41:18,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:41:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-09 22:41:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501310832] [2024-11-09 22:41:18,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:41:18,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:41:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:41:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:41:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2024-11-09 22:41:18,856 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 22:41:22,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:41:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:41:22,941 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2024-11-09 22:41:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:41:22,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 46 [2024-11-09 22:41:22,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:41:22,945 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:41:22,945 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 22:41:22,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2024-11-09 22:41:22,946 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:41:22,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 129 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 22:41:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 22:41:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-09 22:41:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:41:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2024-11-09 22:41:22,964 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 46 [2024-11-09 22:41:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:41:22,965 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2024-11-09 22:41:22,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 22:41:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2024-11-09 22:41:22,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 22:41:22,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:41:22,968 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:41:22,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:41:23,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:41:23,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:41:23,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:41:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash -485765098, now seen corresponding path program 2 times [2024-11-09 22:41:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:41:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322448112] [2024-11-09 22:41:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:41:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:41:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:41:23,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813370086] [2024-11-09 22:41:23,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:41:23,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:41:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:41:23,235 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) [2024-11-09 22:41:23,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:41:23,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:41:23,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:41:23,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 22:41:23,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:41:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 40 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 22:41:23,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:41:40,078 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) 1) 18446744073709551616) 0))) is different from true