./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/geo2-ll_unwindbound20.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 ecea962a84fe32a20735cb1daf0369eacb7c8180f4f4ad62c19a1a49422dab47 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:31:04,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:31:04,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:31:04,612 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:31:04,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:31:04,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:31:04,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:31:04,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:31:04,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:31:04,641 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:31:04,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:31:04,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:31:04,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:31:04,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:31:04,643 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:31:04,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:31:04,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:31:04,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:31:04,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:31:04,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:31:04,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:31:04,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:31:04,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:31:04,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:31:04,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:31:04,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:31:04,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:31:04,647 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:31:04,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:31:04,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:31:04,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:31:04,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:31:04,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:31:04,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:31:04,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:31:04,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:31:04,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:31:04,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:31:04,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:31:04,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:31:04,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:31:04,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:31:04,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea962a84fe32a20735cb1daf0369eacb7c8180f4f4ad62c19a1a49422dab47 [2024-11-08 14:31:04,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:31:04,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:31:04,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:31:04,904 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:31:04,905 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:31:04,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c [2024-11-08 14:31:06,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:31:06,477 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:31:06,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound20.c [2024-11-08 14:31:06,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d60cdb23/622c9597c225411b89df841fd4d14a54/FLAGddf04c6e3 [2024-11-08 14:31:06,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d60cdb23/622c9597c225411b89df841fd4d14a54 [2024-11-08 14:31:06,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:31:06,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:31:06,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:31:06,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:31:06,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:31:06,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c73667b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06, skipping insertion in model container [2024-11-08 14:31:06,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:31:06,705 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/geo2-ll_unwindbound20.c[525,538] [2024-11-08 14:31:06,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:31:06,735 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:31:06,750 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/geo2-ll_unwindbound20.c[525,538] [2024-11-08 14:31:06,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:31:06,773 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:31:06,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06 WrapperNode [2024-11-08 14:31:06,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:31:06,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:31:06,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:31:06,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:31:06,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,807 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-11-08 14:31:06,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:31:06,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:31:06,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:31:06,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:31:06,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,837 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]. [2024-11-08 14:31:06,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:31:06,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:31:06,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:31:06,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:31:06,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (1/1) ... [2024-11-08 14:31:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:31:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:31:06,885 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) [2024-11-08 14:31:06,888 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 [2024-11-08 14:31:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:31:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:31:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:31:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:31:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:31:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:31:06,983 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:31:06,986 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:31:07,110 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:31:07,111 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:31:07,121 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:31:07,123 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 14:31:07,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:31:07 BoogieIcfgContainer [2024-11-08 14:31:07,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:31:07,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:31:07,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:31:07,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:31:07,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:31:06" (1/3) ... [2024-11-08 14:31:07,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35740594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:31:07, skipping insertion in model container [2024-11-08 14:31:07,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:31:06" (2/3) ... [2024-11-08 14:31:07,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35740594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:31:07, skipping insertion in model container [2024-11-08 14:31:07,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:31:07" (3/3) ... [2024-11-08 14:31:07,135 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound20.c [2024-11-08 14:31:07,151 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:31:07,151 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:31:07,215 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:31:07,223 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;@19452e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:31:07,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:31:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:31:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 14:31:07,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:07,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:31:07,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:07,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2024-11-08 14:31:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541302512] [2024-11-08 14:31:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:07,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:07,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:31:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541302512] [2024-11-08 14:31:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541302512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:31:07,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:31:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:31:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279296671] [2024-11-08 14:31:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:31:07,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:31:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:31:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:31:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:31:07,396 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2024-11-08 14:31:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:31:07,408 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-11-08 14:31:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:31:07,411 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 [2024-11-08 14:31:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:31:07,416 INFO L225 Difference]: With dead ends: 32 [2024-11-08 14:31:07,416 INFO L226 Difference]: Without dead ends: 13 [2024-11-08 14:31:07,419 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 [2024-11-08 14:31:07,422 INFO L432 NwaCegarLoop]: 19 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, 19 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 [2024-11-08 14:31:07,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:31:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-08 14:31:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-08 14:31:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:31:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-08 14:31:07,455 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-11-08 14:31:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:31:07,456 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-08 14:31:07,456 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) [2024-11-08 14:31:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-08 14:31:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 14:31:07,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:07,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:31:07,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:31:07,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:07,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:07,458 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2024-11-08 14:31:07,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587329412] [2024-11-08 14:31:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:07,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:31:07,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587329412] [2024-11-08 14:31:07,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587329412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:31:07,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:31:07,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 14:31:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210547130] [2024-11-08 14:31:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:31:07,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:31:07,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:31:07,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:31:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:31:07,562 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2024-11-08 14:31:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:31:07,583 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-08 14:31:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:31:07,583 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 [2024-11-08 14:31:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:31:07,584 INFO L225 Difference]: With dead ends: 22 [2024-11-08 14:31:07,584 INFO L226 Difference]: Without dead ends: 15 [2024-11-08 14:31:07,584 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 [2024-11-08 14:31:07,586 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 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 [2024-11-08 14:31:07,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:31:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-08 14:31:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-08 14:31:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:31:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-08 14:31:07,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2024-11-08 14:31:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:31:07,595 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-08 14:31:07,595 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) [2024-11-08 14:31:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-08 14:31:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 14:31:07,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:07,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:31:07,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:31:07,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:07,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2024-11-08 14:31:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314495712] [2024-11-08 14:31:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:07,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:31:07,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565803653] [2024-11-08 14:31:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:07,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:31:07,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:31:07,625 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) [2024-11-08 14:31:07,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:31:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:07,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:31:07,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:31:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:07,832 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:31:07,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:31:07,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314495712] [2024-11-08 14:31:07,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:31:07,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565803653] [2024-11-08 14:31:07,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565803653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:31:07,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:31:07,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:31:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505671251] [2024-11-08 14:31:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:31:07,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:31:07,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:31:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:31:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:31:07,836 INFO L87 Difference]: Start difference. First operand 15 states and 17 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) [2024-11-08 14:31:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:31:07,883 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-08 14:31:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:31:07,884 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 [2024-11-08 14:31:07,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:31:07,886 INFO L225 Difference]: With dead ends: 24 [2024-11-08 14:31:07,886 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 14:31:07,886 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 [2024-11-08 14:31:07,887 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:31:07,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 42 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:31:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 14:31:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-08 14:31:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 14:31:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-08 14:31:07,894 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-11-08 14:31:07,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:31:07,894 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-08 14:31:07,894 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) [2024-11-08 14:31:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-08 14:31:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 14:31:07,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:07,896 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:31:07,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 14:31:08,097 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 [2024-11-08 14:31:08,097 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:08,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:08,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1542398814, now seen corresponding path program 1 times [2024-11-08 14:31:08,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:08,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078280985] [2024-11-08 14:31:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:08,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:08,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 14:31:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:08,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:31:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078280985] [2024-11-08 14:31:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078280985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:31:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078840864] [2024-11-08 14:31:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:31:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:31:08,273 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) [2024-11-08 14:31:08,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:31:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:08,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 14:31:08,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:31:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:08,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:31:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078840864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:31:08,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:31:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-08 14:31:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093251478] [2024-11-08 14:31:08,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:31:08,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 14:31:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:31:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 14:31:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:31:08,439 INFO L87 Difference]: Start difference. First operand 21 states and 23 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) [2024-11-08 14:31:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:31:08,535 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2024-11-08 14:31:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 14:31:08,535 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 [2024-11-08 14:31:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:31:08,537 INFO L225 Difference]: With dead ends: 52 [2024-11-08 14:31:08,537 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 14:31:08,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:31:08,539 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:31:08,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:31:08,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 14:31:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-08 14:31:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 14:31:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-08 14:31:08,550 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2024-11-08 14:31:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:31:08,551 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-08 14:31:08,551 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) [2024-11-08 14:31:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-08 14:31:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 14:31:08,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:08,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:31:08,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:31:08,753 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 [2024-11-08 14:31:08,753 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:08,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1540611354, now seen corresponding path program 1 times [2024-11-08 14:31:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634116556] [2024-11-08 14:31:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:31:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547610231] [2024-11-08 14:31:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:08,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:31:08,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:31:08,790 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) [2024-11-08 14:31:08,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:31:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:31:08,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 14:31:08,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:31:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:31:08,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:31:13,192 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~z~0#1| (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)) is different from false [2024-11-08 14:31:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:31:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634116556] [2024-11-08 14:31:13,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:31:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547610231] [2024-11-08 14:31:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547610231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:31:13,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:31:13,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-08 14:31:13,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097696915] [2024-11-08 14:31:13,211 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:31:13,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:31:13,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:31:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:31:13,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2024-11-08 14:31:13,213 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:31:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:31:13,261 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-08 14:31:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:31:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-08 14:31:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:31:13,263 INFO L225 Difference]: With dead ends: 43 [2024-11-08 14:31:13,263 INFO L226 Difference]: Without dead ends: 40 [2024-11-08 14:31:13,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2024-11-08 14:31:13,264 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:31:13,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 61 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:31:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-08 14:31:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-08 14:31:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 14:31:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-08 14:31:13,273 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 16 [2024-11-08 14:31:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:31:13,273 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-08 14:31:13,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 14:31:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-08 14:31:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-08 14:31:13,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:31:13,274 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 14:31:13,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:31:13,475 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 [2024-11-08 14:31:13,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:31:13,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:31:13,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1196815277, now seen corresponding path program 2 times [2024-11-08 14:31:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:31:13,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651339775] [2024-11-08 14:31:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:31:13,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:31:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:31:13,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111583374] [2024-11-08 14:31:13,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:31:13,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:31:13,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:31:13,506 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) [2024-11-08 14:31:13,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:31:13,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:31:13,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:31:13,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 14:31:13,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:31:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:31:13,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:31:44,562 WARN L873 $PredicateComparison]: unable to prove that (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|) 1) 18446744073709551616) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 1)))) is different from true [2024-11-08 14:32:12,921 WARN L873 $PredicateComparison]: unable to prove that (or (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|) 1) 18446744073709551616) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 1)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-11-08 14:32:29,338 WARN L873 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|) 1) 18446744073709551616) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 1))) is different from true [2024-11-08 14:32:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2024-11-08 14:32:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:32:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651339775] [2024-11-08 14:32:29,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:32:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111583374] [2024-11-08 14:32:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111583374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:32:29,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:32:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-08 14:32:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232729678] [2024-11-08 14:32:29,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:32:29,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 14:32:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:32:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 14:32:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=105, Unknown=4, NotChecked=66, Total=210 [2024-11-08 14:32:29,347 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 14:32:33,368 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c___VERIFIER_assert_#in~cond| 1))) (and (or (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|) 1) 18446744073709551616) 0)))) (not .cse0)) .cse0)) is different from false [2024-11-08 14:32:37,381 WARN L851 $PredicateComparison]: unable to prove that (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (or (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (forall ((|v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|)) 18446744073709551616) 0) (not (= (mod (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5|) (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| 18446744073709551615) (* 18446744073709551615 |v_ULTIMATE.start_main_~z~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_7|) 1) 18446744073709551616) 0)))) (not (= |c___VERIFIER_assert_#in~cond| 1)))) (= c___VERIFIER_assert_~cond 0)) (= c___VERIFIER_assert_~cond 1)) is different from false [2024-11-08 14:32:42,991 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 14:32:48,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []