./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i --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/array-examples/data_structures_set_multi_proc_ground-2.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 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 09:38:32,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 09:38:32,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 09:38:32,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 09:38:32,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 09:38:32,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 09:38:32,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 09:38:32,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 09:38:32,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 09:38:32,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 09:38:32,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 09:38:32,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 09:38:32,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 09:38:32,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 09:38:32,739 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 09:38:32,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 09:38:32,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 09:38:32,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 09:38:32,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 09:38:32,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 09:38:32,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 09:38:32,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 09:38:32,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 09:38:32,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 09:38:32,747 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 09:38:32,747 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 09:38:32,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 09:38:32,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 09:38:32,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 09:38:32,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 09:38:32,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 09:38:32,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 09:38:32,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:38:32,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 09:38:32,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 09:38:32,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 09:38:32,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 09:38:32,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 09:38:32,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 09:38:32,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 09:38:32,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 09:38:32,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 09:38:32,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 [2024-11-08 09:38:32,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 09:38:33,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 09:38:33,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 09:38:33,029 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 09:38:33,030 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 09:38:33,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2024-11-08 09:38:34,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 09:38:34,606 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 09:38:34,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2024-11-08 09:38:34,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00ff83b8/179e410551d74ade92fcb45f63f09d4f/FLAG81c95ee06 [2024-11-08 09:38:34,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00ff83b8/179e410551d74ade92fcb45f63f09d4f [2024-11-08 09:38:34,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 09:38:34,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 09:38:34,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 09:38:34,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 09:38:34,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 09:38:34,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cad39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34, skipping insertion in model container [2024-11-08 09:38:34,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 09:38:34,835 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_ground-2.i[832,845] [2024-11-08 09:38:34,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:38:34,881 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 09:38:34,890 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_ground-2.i[832,845] [2024-11-08 09:38:34,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 09:38:34,930 INFO L204 MainTranslator]: Completed translation [2024-11-08 09:38:34,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34 WrapperNode [2024-11-08 09:38:34,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 09:38:34,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 09:38:34,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 09:38:34,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 09:38:34,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,968 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-11-08 09:38:34,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 09:38:34,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 09:38:34,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 09:38:34,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 09:38:34,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,983 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,997 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 3, 7]. 58 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]. [2024-11-08 09:38:34,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:34,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 09:38:35,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 09:38:35,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 09:38:35,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 09:38:35,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (1/1) ... [2024-11-08 09:38:35,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 09:38:35,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:35,054 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 09:38:35,058 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 09:38:35,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 09:38:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 09:38:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 09:38:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 09:38:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 09:38:35,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 09:38:35,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 09:38:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 09:38:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 09:38:35,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 09:38:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 09:38:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 09:38:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 09:38:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 09:38:35,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 09:38:35,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 09:38:35,218 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 09:38:35,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 09:38:35,488 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-08 09:38:35,488 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 09:38:35,504 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 09:38:35,504 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 09:38:35,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:38:35 BoogieIcfgContainer [2024-11-08 09:38:35,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 09:38:35,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 09:38:35,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 09:38:35,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 09:38:35,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 09:38:34" (1/3) ... [2024-11-08 09:38:35,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232b562f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:38:35, skipping insertion in model container [2024-11-08 09:38:35,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 09:38:34" (2/3) ... [2024-11-08 09:38:35,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232b562f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 09:38:35, skipping insertion in model container [2024-11-08 09:38:35,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 09:38:35" (3/3) ... [2024-11-08 09:38:35,515 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2024-11-08 09:38:35,532 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 09:38:35,533 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 09:38:35,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 09:38:35,602 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;@6549ad08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 09:38:35,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 09:38:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 09:38:35,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 09:38:35,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:35,614 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:35,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:35,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1976888394, now seen corresponding path program 1 times [2024-11-08 09:38:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:35,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926423017] [2024-11-08 09:38:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:35,810 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 09:38:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:35,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926423017] [2024-11-08 09:38:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926423017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:38:35,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:38:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:38:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107305591] [2024-11-08 09:38:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:38:35,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:38:35,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:38:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:38:35,842 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 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 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) [2024-11-08 09:38:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:35,915 INFO L93 Difference]: Finished difference Result 92 states and 144 transitions. [2024-11-08 09:38:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:38:35,921 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 [2024-11-08 09:38:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:35,929 INFO L225 Difference]: With dead ends: 92 [2024-11-08 09:38:35,930 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 09:38:35,933 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 [2024-11-08 09:38:35,936 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:35,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:38:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 09:38:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2024-11-08 09:38:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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 09:38:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-08 09:38:36,007 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 10 [2024-11-08 09:38:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:36,010 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-08 09:38:36,011 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) [2024-11-08 09:38:36,011 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-08 09:38:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 09:38:36,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:36,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:36,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 09:38:36,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:36,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1321690828, now seen corresponding path program 1 times [2024-11-08 09:38:36,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:36,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169625063] [2024-11-08 09:38:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:36,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:38:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169625063] [2024-11-08 09:38:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169625063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036983204] [2024-11-08 09:38:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:36,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:36,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:36,123 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 09:38:36,125 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 09:38:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:36,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 09:38:36,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:38:36,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 09:38:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036983204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:36,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:36,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 09:38:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935944567] [2024-11-08 09:38:36,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:36,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 09:38:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 09:38:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 09:38:36,277 INFO L87 Difference]: Start difference. First operand 38 states and 48 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) [2024-11-08 09:38:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:36,417 INFO L93 Difference]: Finished difference Result 125 states and 167 transitions. [2024-11-08 09:38:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 09:38:36,417 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 [2024-11-08 09:38:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:36,420 INFO L225 Difference]: With dead ends: 125 [2024-11-08 09:38:36,420 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 09:38:36,420 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 [2024-11-08 09:38:36,421 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 50 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:36,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 163 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 09:38:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 09:38:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 44. [2024-11-08 09:38:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 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 09:38:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-08 09:38:36,439 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 12 [2024-11-08 09:38:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:36,439 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-08 09:38:36,440 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) [2024-11-08 09:38:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-08 09:38:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 09:38:36,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:36,440 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:36,458 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 09:38:36,641 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 [2024-11-08 09:38:36,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:36,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash -202652846, now seen corresponding path program 2 times [2024-11-08 09:38:36,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:36,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782883953] [2024-11-08 09:38:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:36,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 09:38:36,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782883953] [2024-11-08 09:38:36,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782883953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:38:36,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:38:36,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:38:36,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382015115] [2024-11-08 09:38:36,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:38:36,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:38:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:38:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:38:36,776 INFO L87 Difference]: Start difference. First operand 44 states and 54 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) [2024-11-08 09:38:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:36,814 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2024-11-08 09:38:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:38:36,817 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 [2024-11-08 09:38:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:36,818 INFO L225 Difference]: With dead ends: 81 [2024-11-08 09:38:36,818 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 09:38:36,819 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 [2024-11-08 09:38:36,820 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:36,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:38:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 09:38:36,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-08 09:38:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-08 09:38:36,834 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 18 [2024-11-08 09:38:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:36,834 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-08 09:38:36,834 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) [2024-11-08 09:38:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-08 09:38:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 09:38:36,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:36,837 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] [2024-11-08 09:38:36,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 09:38:36,838 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:36,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1069304186, now seen corresponding path program 1 times [2024-11-08 09:38:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:36,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610122892] [2024-11-08 09:38:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:36,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 09:38:36,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610122892] [2024-11-08 09:38:36,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610122892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:38:36,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:38:36,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 09:38:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763726351] [2024-11-08 09:38:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:38:36,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 09:38:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:36,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 09:38:36,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 09:38:36,940 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2024-11-08 09:38:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:36,958 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2024-11-08 09:38:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 09:38:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 31 [2024-11-08 09:38:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:36,959 INFO L225 Difference]: With dead ends: 90 [2024-11-08 09:38:36,959 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 09:38:36,960 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 [2024-11-08 09:38:36,960 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 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 [2024-11-08 09:38:36,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:38:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 09:38:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2024-11-08 09:38:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2024-11-08 09:38:36,965 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 31 [2024-11-08 09:38:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:36,965 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2024-11-08 09:38:36,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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) [2024-11-08 09:38:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-11-08 09:38:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 09:38:36,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:36,966 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, 1, 1] [2024-11-08 09:38:36,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 09:38:36,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:36,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1327947132, now seen corresponding path program 1 times [2024-11-08 09:38:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:36,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612338689] [2024-11-08 09:38:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 09:38:37,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612338689] [2024-11-08 09:38:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612338689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996230152] [2024-11-08 09:38:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:37,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:37,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:37,072 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 09:38:37,073 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 09:38:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:37,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 09:38:37,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:38:37,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 09:38:37,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996230152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:37,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:37,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 09:38:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894718939] [2024-11-08 09:38:37,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:37,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 09:38:37,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 09:38:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:38:37,352 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 09:38:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:37,561 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2024-11-08 09:38:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 09:38:37,562 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 33 [2024-11-08 09:38:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:37,563 INFO L225 Difference]: With dead ends: 187 [2024-11-08 09:38:37,564 INFO L226 Difference]: Without dead ends: 150 [2024-11-08 09:38:37,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 09:38:37,565 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:37,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 239 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:38:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-08 09:38:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 72. [2024-11-08 09:38:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2024-11-08 09:38:37,578 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 33 [2024-11-08 09:38:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:37,579 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2024-11-08 09:38:37,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 09:38:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2024-11-08 09:38:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 09:38:37,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:37,581 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:37,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 09:38:37,781 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 [2024-11-08 09:38:37,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:37,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1439765920, now seen corresponding path program 1 times [2024-11-08 09:38:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658380520] [2024-11-08 09:38:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:37,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-08 09:38:37,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658380520] [2024-11-08 09:38:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658380520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 09:38:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 09:38:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 09:38:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591979462] [2024-11-08 09:38:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 09:38:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 09:38:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 09:38:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 09:38:37,925 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 09:38:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:37,941 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2024-11-08 09:38:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 09:38:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 53 [2024-11-08 09:38:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:37,943 INFO L225 Difference]: With dead ends: 108 [2024-11-08 09:38:37,943 INFO L226 Difference]: Without dead ends: 78 [2024-11-08 09:38:37,943 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 [2024-11-08 09:38:37,944 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 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 [2024-11-08 09:38:37,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 09:38:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-08 09:38:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2024-11-08 09:38:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-08 09:38:37,956 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 53 [2024-11-08 09:38:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:37,956 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-08 09:38:37,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 09:38:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-08 09:38:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 09:38:37,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:37,958 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:37,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 09:38:37,958 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:37,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1235733610, now seen corresponding path program 1 times [2024-11-08 09:38:37,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:37,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32550089] [2024-11-08 09:38:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:37,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:38,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:38,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32550089] [2024-11-08 09:38:38,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32550089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:38,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037965177] [2024-11-08 09:38:38,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:38,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:38,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:38,289 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 09:38:38,291 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 09:38:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:38,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 09:38:38,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:38,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037965177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:38,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:38,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-08 09:38:38,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794763615] [2024-11-08 09:38:38,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:38,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 09:38:38,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:38,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 09:38:38,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 09:38:38,719 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 09:38:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:39,015 INFO L93 Difference]: Finished difference Result 283 states and 364 transitions. [2024-11-08 09:38:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 09:38:39,016 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 53 [2024-11-08 09:38:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:39,019 INFO L225 Difference]: With dead ends: 283 [2024-11-08 09:38:39,020 INFO L226 Difference]: Without dead ends: 231 [2024-11-08 09:38:39,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 09:38:39,023 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 281 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:39,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 200 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 09:38:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-08 09:38:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 99. [2024-11-08 09:38:39,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 96 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2024-11-08 09:38:39,050 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 53 [2024-11-08 09:38:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:39,053 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2024-11-08 09:38:39,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 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 09:38:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2024-11-08 09:38:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 09:38:39,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:39,055 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:39,074 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 09:38:39,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:39,259 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:39,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1201823662, now seen corresponding path program 2 times [2024-11-08 09:38:39,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:39,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437503009] [2024-11-08 09:38:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:39,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437503009] [2024-11-08 09:38:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437503009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:39,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416626305] [2024-11-08 09:38:39,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 09:38:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:39,985 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 09:38:39,987 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 09:38:40,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 09:38:40,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:38:40,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 09:38:40,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:40,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416626305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:41,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:41,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-08 09:38:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219194160] [2024-11-08 09:38:41,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:41,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 09:38:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 09:38:41,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:38:41,020 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 09:38:41,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:41,637 INFO L93 Difference]: Finished difference Result 475 states and 616 transitions. [2024-11-08 09:38:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 09:38:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 77 [2024-11-08 09:38:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:41,640 INFO L225 Difference]: With dead ends: 475 [2024-11-08 09:38:41,640 INFO L226 Difference]: Without dead ends: 423 [2024-11-08 09:38:41,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 09:38:41,642 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 669 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:41,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 291 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:38:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-08 09:38:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 147. [2024-11-08 09:38:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 144 states have internal predecessors, (158), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2024-11-08 09:38:41,663 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 77 [2024-11-08 09:38:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:41,664 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2024-11-08 09:38:41,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 09:38:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2024-11-08 09:38:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 09:38:41,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:41,669 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:41,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 09:38:41,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:41,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:41,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2102943710, now seen corresponding path program 3 times [2024-11-08 09:38:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767583947] [2024-11-08 09:38:41,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 09:38:43,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767583947] [2024-11-08 09:38:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767583947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:43,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448735937] [2024-11-08 09:38:43,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 09:38:43,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:43,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:43,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:38:43,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 09:38:44,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 09:38:44,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:38:44,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 09:38:44,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2024-11-08 09:38:44,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2024-11-08 09:38:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448735937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:44,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:44,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 5, 5] total 55 [2024-11-08 09:38:44,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301812613] [2024-11-08 09:38:44,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:44,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 09:38:44,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:44,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 09:38:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 09:38:44,255 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 55 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 55 states have internal predecessors, (137), 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 09:38:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:44,940 INFO L93 Difference]: Finished difference Result 566 states and 718 transitions. [2024-11-08 09:38:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 09:38:44,940 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 55 states have internal predecessors, (137), 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 125 [2024-11-08 09:38:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:44,945 INFO L225 Difference]: With dead ends: 566 [2024-11-08 09:38:44,946 INFO L226 Difference]: Without dead ends: 514 [2024-11-08 09:38:44,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1203, Invalid=1767, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 09:38:44,948 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1025 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:44,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 332 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 09:38:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-08 09:38:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 229. [2024-11-08 09:38:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 226 states have (on average 1.168141592920354) internal successors, (264), 226 states have internal predecessors, (264), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 266 transitions. [2024-11-08 09:38:44,975 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 266 transitions. Word has length 125 [2024-11-08 09:38:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:44,976 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 266 transitions. [2024-11-08 09:38:44,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 55 states have internal predecessors, (137), 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 09:38:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 266 transitions. [2024-11-08 09:38:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-08 09:38:44,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:44,982 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:44,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 09:38:45,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:45,183 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:45,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1761277144, now seen corresponding path program 4 times [2024-11-08 09:38:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806343062] [2024-11-08 09:38:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2336 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-08 09:38:47,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806343062] [2024-11-08 09:38:47,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806343062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:47,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602801416] [2024-11-08 09:38:47,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 09:38:47,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:47,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:38:47,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 09:38:47,363 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 09:38:47,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 09:38:47,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 09:38:47,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 09:38:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2336 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2024-11-08 09:38:47,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 09:38:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2336 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2024-11-08 09:38:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602801416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 09:38:47,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 09:38:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 9, 9] total 64 [2024-11-08 09:38:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472579032] [2024-11-08 09:38:47,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 09:38:47,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 09:38:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 09:38:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 09:38:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1344, Invalid=2688, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 09:38:47,887 INFO L87 Difference]: Start difference. First operand 229 states and 266 transitions. Second operand has 64 states, 64 states have (on average 3.265625) internal successors, (209), 64 states have internal predecessors, (209), 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 09:38:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 09:38:48,529 INFO L93 Difference]: Finished difference Result 814 states and 1048 transitions. [2024-11-08 09:38:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 09:38:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.265625) internal successors, (209), 64 states have internal predecessors, (209), 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 159 [2024-11-08 09:38:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 09:38:48,535 INFO L225 Difference]: With dead ends: 814 [2024-11-08 09:38:48,535 INFO L226 Difference]: Without dead ends: 682 [2024-11-08 09:38:48,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1344, Invalid=2688, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 09:38:48,538 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 894 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 09:38:48,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 476 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 09:38:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-08 09:38:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 391. [2024-11-08 09:38:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 388 states have (on average 1.2216494845360826) internal successors, (474), 388 states have internal predecessors, (474), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 09:38:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 476 transitions. [2024-11-08 09:38:48,565 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 476 transitions. Word has length 159 [2024-11-08 09:38:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 09:38:48,565 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 476 transitions. [2024-11-08 09:38:48,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.265625) internal successors, (209), 64 states have internal predecessors, (209), 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 09:38:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 476 transitions. [2024-11-08 09:38:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-08 09:38:48,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 09:38:48,570 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 09:38:48,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 09:38:48,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:48,771 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 09:38:48,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 09:38:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1159921802, now seen corresponding path program 5 times [2024-11-08 09:38:48,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 09:38:48,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568730603] [2024-11-08 09:38:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 09:38:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 09:38:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 09:38:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3047 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2024-11-08 09:38:50,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 09:38:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568730603] [2024-11-08 09:38:50,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568730603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 09:38:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981820744] [2024-11-08 09:38:50,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 09:38:50,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 09:38:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 09:38:50,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 09:38:50,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process