./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/array-examples/data_structures_set_multi_proc_trivial_ground.i -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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:30:06,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:30:06,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:30:06,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:30:06,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:30:06,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:30:06,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:30:06,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:30:06,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:30:06,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:30:06,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:30:06,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:30:06,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:30:06,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:30:06,880 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:30:06,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:30:06,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:30:06,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:30:06,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:30:06,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:30:06,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:30:06,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:30:06,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:30:06,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:30:06,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:30:06,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:30:06,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:30:06,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:30:06,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:30:06,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:30:06,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:30:06,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:30:06,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:30:06,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:30:06,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:30:06,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:30:06,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:30:06,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:30:06,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:30:06,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:30:06,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:30:06,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:30:06,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2024-11-21 20:30:07,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:30:07,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:30:07,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:30:07,179 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:30:07,179 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:30:07,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-21 20:30:08,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:30:08,845 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:30:08,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2024-11-21 20:30:08,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300ceefb9/118232bb1f684e66b38ef5b93a61eed7/FLAG3489acbb5 [2024-11-21 20:30:09,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300ceefb9/118232bb1f684e66b38ef5b93a61eed7 [2024-11-21 20:30:09,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:30:09,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:30:09,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:30:09,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:30:09,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:30:09,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d6317c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09, skipping insertion in model container [2024-11-21 20:30:09,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:30:09,450 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2024-11-21 20:30:09,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:30:09,501 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:30:09,513 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/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2024-11-21 20:30:09,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:30:09,562 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:30:09,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09 WrapperNode [2024-11-21 20:30:09,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:30:09,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:30:09,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:30:09,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:30:09,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,641 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 159 [2024-11-21 20:30:09,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:30:09,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:30:09,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:30:09,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:30:09,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,705 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-21 20:30:09,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,712 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:30:09,727 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:30:09,727 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:30:09,727 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:30:09,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (1/1) ... [2024-11-21 20:30:09,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:30:09,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:09,764 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) [2024-11-21 20:30:09,767 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 [2024-11-21 20:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:30:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:30:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:30:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:30:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-21 20:30:09,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-21 20:30:09,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:30:09,891 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:30:09,893 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:30:10,088 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-21 20:30:10,088 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:30:10,105 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:30:10,106 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-21 20:30:10,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:30:10 BoogieIcfgContainer [2024-11-21 20:30:10,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:30:10,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:30:10,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:30:10,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:30:10,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:30:09" (1/3) ... [2024-11-21 20:30:10,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3470056b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:30:10, skipping insertion in model container [2024-11-21 20:30:10,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:09" (2/3) ... [2024-11-21 20:30:10,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3470056b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:30:10, skipping insertion in model container [2024-11-21 20:30:10,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:30:10" (3/3) ... [2024-11-21 20:30:10,120 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2024-11-21 20:30:10,133 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:30:10,133 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:30:10,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:30:10,211 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;@7b762fc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:30:10,211 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:30:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:30:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-21 20:30:10,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:10,223 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:10,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:10,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times [2024-11-21 20:30:10,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:10,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091204983] [2024-11-21 20:30:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091204983] [2024-11-21 20:30:10,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091204983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:10,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:10,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:30:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680569700] [2024-11-21 20:30:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:10,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:30:10,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:10,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:30:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:10,470 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-21 20:30:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:10,567 INFO L93 Difference]: Finished difference Result 112 states and 181 transitions. [2024-11-21 20:30:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:30:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-21 20:30:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:10,576 INFO L225 Difference]: With dead ends: 112 [2024-11-21 20:30:10,576 INFO L226 Difference]: Without dead ends: 64 [2024-11-21 20:30:10,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:10,582 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:10,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:30:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-21 20:30:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2024-11-21 20:30:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:30:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-21 20:30:10,621 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10 [2024-11-21 20:30:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:10,621 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-21 20:30:10,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-21 20:30:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-21 20:30:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-21 20:30:10,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:10,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:10,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:30:10,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:10,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times [2024-11-21 20:30:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015538218] [2024-11-21 20:30:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:10,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:10,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015538218] [2024-11-21 20:30:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015538218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:10,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221625561] [2024-11-21 20:30:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:10,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:10,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:10,707 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) [2024-11-21 20:30:10,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:30:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:10,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:30:10,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:10,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221625561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:10,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:30:10,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455152874] [2024-11-21 20:30:10,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:10,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:30:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:30:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:30:10,830 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2024-11-21 20:30:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:10,989 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2024-11-21 20:30:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:30:10,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 12 [2024-11-21 20:30:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:10,998 INFO L225 Difference]: With dead ends: 163 [2024-11-21 20:30:10,999 INFO L226 Difference]: Without dead ends: 123 [2024-11-21 20:30:11,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:30:11,001 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 77 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:11,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 212 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:30:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-21 20:30:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 51. [2024-11-21 20:30:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:30:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-21 20:30:11,019 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12 [2024-11-21 20:30:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:11,020 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-21 20:30:11,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2024-11-21 20:30:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-21 20:30:11,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-21 20:30:11,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:11,023 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:11,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 20:30:11,224 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 [2024-11-21 20:30:11,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:11,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:11,225 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times [2024-11-21 20:30:11,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423760241] [2024-11-21 20:30:11,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:11,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:11,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-21 20:30:11,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:30:11,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423760241] [2024-11-21 20:30:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423760241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:11,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:11,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:30:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053730726] [2024-11-21 20:30:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:11,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:30:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:30:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:30:11,361 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-21 20:30:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:11,421 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2024-11-21 20:30:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:30:11,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 18 [2024-11-21 20:30:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:11,423 INFO L225 Difference]: With dead ends: 97 [2024-11-21 20:30:11,424 INFO L226 Difference]: Without dead ends: 56 [2024-11-21 20:30:11,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:30:11,426 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:11,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 86 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-21 20:30:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-21 20:30:11,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 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) [2024-11-21 20:30:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2024-11-21 20:30:11,433 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18 [2024-11-21 20:30:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:11,434 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2024-11-21 20:30:11,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-21 20:30:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2024-11-21 20:30:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 20:30:11,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:11,435 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:11,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 20:30:11,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:11,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times [2024-11-21 20:30:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:11,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053679918] [2024-11-21 20:30:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:30:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053679918] [2024-11-21 20:30:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053679918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:11,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:11,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:30:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076040787] [2024-11-21 20:30:11,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:11,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:30:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:30:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:11,582 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-21 20:30:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:11,627 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2024-11-21 20:30:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:30:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 29 [2024-11-21 20:30:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:11,628 INFO L225 Difference]: With dead ends: 117 [2024-11-21 20:30:11,628 INFO L226 Difference]: Without dead ends: 77 [2024-11-21 20:30:11,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:11,630 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:11,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-21 20:30:11,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2024-11-21 20:30:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 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) [2024-11-21 20:30:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2024-11-21 20:30:11,645 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2024-11-21 20:30:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:11,646 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2024-11-21 20:30:11,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-21 20:30:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2024-11-21 20:30:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-21 20:30:11,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:11,648 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:11,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 20:30:11,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:11,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times [2024-11-21 20:30:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440246919] [2024-11-21 20:30:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:30:11,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:11,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440246919] [2024-11-21 20:30:11,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440246919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:11,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033969447] [2024-11-21 20:30:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:11,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:11,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:11,754 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) [2024-11-21 20:30:11,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:30:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:11,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:30:11,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:11,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033969447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:11,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-21 20:30:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955931076] [2024-11-21 20:30:11,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:11,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-21 20:30:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-21 20:30:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-21 20:30:11,989 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2024-11-21 20:30:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:12,588 INFO L93 Difference]: Finished difference Result 403 states and 561 transitions. [2024-11-21 20:30:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-21 20:30:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 31 [2024-11-21 20:30:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:12,592 INFO L225 Difference]: With dead ends: 403 [2024-11-21 20:30:12,592 INFO L226 Difference]: Without dead ends: 357 [2024-11-21 20:30:12,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2024-11-21 20:30:12,597 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 588 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:12,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 254 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:30:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-21 20:30:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 88. [2024-11-21 20:30:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:30:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2024-11-21 20:30:12,633 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31 [2024-11-21 20:30:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:12,633 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2024-11-21 20:30:12,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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) [2024-11-21 20:30:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2024-11-21 20:30:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:30:12,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:12,638 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:12,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 20:30:12,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:12,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:12,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times [2024-11-21 20:30:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:12,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088813521] [2024-11-21 20:30:12,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:12,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:12,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-21 20:30:12,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-21 20:30:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:12,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088813521] [2024-11-21 20:30:12,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088813521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:12,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:12,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:30:12,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022503276] [2024-11-21 20:30:12,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:12,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:30:12,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:30:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:30:12,951 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-21 20:30:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:12,969 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2024-11-21 20:30:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:30:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 45 [2024-11-21 20:30:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:12,972 INFO L225 Difference]: With dead ends: 133 [2024-11-21 20:30:12,972 INFO L226 Difference]: Without dead ends: 94 [2024-11-21 20:30:12,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:30:12,974 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:12,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-21 20:30:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2024-11-21 20:30:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-21 20:30:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2024-11-21 20:30:12,989 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2024-11-21 20:30:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:12,989 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2024-11-21 20:30:12,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-21 20:30:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2024-11-21 20:30:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-21 20:30:12,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:12,993 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:12,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 20:30:12,993 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:12,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times [2024-11-21 20:30:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947271154] [2024-11-21 20:30:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-21 20:30:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947271154] [2024-11-21 20:30:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947271154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:13,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 20:30:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61649393] [2024-11-21 20:30:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:13,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:30:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:13,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:30:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-21 20:30:13,174 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-21 20:30:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:13,194 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2024-11-21 20:30:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:30:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 45 [2024-11-21 20:30:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:13,196 INFO L225 Difference]: With dead ends: 100 [2024-11-21 20:30:13,196 INFO L226 Difference]: Without dead ends: 0 [2024-11-21 20:30:13,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:30:13,197 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 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 [2024-11-21 20:30:13,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-21 20:30:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-21 20:30:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:30:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-21 20:30:13,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2024-11-21 20:30:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:13,199 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-21 20:30:13,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2024-11-21 20:30:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-21 20:30:13,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-21 20:30:13,202 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-21 20:30:13,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 20:30:13,206 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-21 20:30:13,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-21 20:30:13,268 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-21 20:30:13,285 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~n~0 [2024-11-21 20:30:13,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 08:30:13 BoogieIcfgContainer [2024-11-21 20:30:13,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-21 20:30:13,295 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-21 20:30:13,295 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-21 20:30:13,296 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-21 20:30:13,296 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:30:10" (3/4) ... [2024-11-21 20:30:13,298 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-21 20:30:13,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-21 20:30:13,307 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-21 20:30:13,309 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-21 20:30:13,309 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-21 20:30:13,309 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-21 20:30:13,421 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-21 20:30:13,424 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-21 20:30:13,424 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-21 20:30:13,425 INFO L158 Benchmark]: Toolchain (without parser) took 4192.31ms. Allocated memory is still 182.5MB. Free memory was 116.4MB in the beginning and 83.4MB in the end (delta: 33.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,425 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-21 20:30:13,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.58ms. Allocated memory is still 182.5MB. Free memory was 116.2MB in the beginning and 102.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.47ms. Allocated memory is still 182.5MB. Free memory was 102.2MB in the beginning and 156.0MB in the end (delta: -53.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,426 INFO L158 Benchmark]: Boogie Preprocessor took 77.62ms. Allocated memory is still 182.5MB. Free memory was 156.0MB in the beginning and 153.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,426 INFO L158 Benchmark]: RCFGBuilder took 380.51ms. Allocated memory is still 182.5MB. Free memory was 153.4MB in the beginning and 136.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,426 INFO L158 Benchmark]: TraceAbstraction took 3185.92ms. Allocated memory is still 182.5MB. Free memory was 135.9MB in the beginning and 88.7MB in the end (delta: 47.3MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,426 INFO L158 Benchmark]: Witness Printer took 128.92ms. Allocated memory is still 182.5MB. Free memory was 88.7MB in the beginning and 83.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-21 20:30:13,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.58ms. Allocated memory is still 182.5MB. Free memory was 116.2MB in the beginning and 102.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.47ms. Allocated memory is still 182.5MB. Free memory was 102.2MB in the beginning and 156.0MB in the end (delta: -53.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.62ms. Allocated memory is still 182.5MB. Free memory was 156.0MB in the beginning and 153.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.51ms. Allocated memory is still 182.5MB. Free memory was 153.4MB in the beginning and 136.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3185.92ms. Allocated memory is still 182.5MB. Free memory was 135.9MB in the beginning and 88.7MB in the end (delta: 47.3MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 128.92ms. Allocated memory is still 182.5MB. Free memory was 88.7MB in the beginning and 83.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~n~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 768 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 730 mSDsluCounter, 894 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 610 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 284 mSDtfsCounter, 341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 383 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 233 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (n == 0) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((n == 0) && (x == 0)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (n == 0) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((size == 0) && (i == 0)) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (n == 0) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: 0 Ensures: 0 RESULT: Ultimate proved your program to be correct! [2024-11-21 20:30:13,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE