./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/bigshot_s2.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-23 00:04:36,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 00:04:36,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 00:04:36,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 00:04:36,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 00:04:36,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 00:04:36,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 00:04:36,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 00:04:36,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 00:04:36,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 00:04:36,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 00:04:36,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 00:04:36,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 00:04:36,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 00:04:36,451 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 00:04:36,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 00:04:36,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 00:04:36,452 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 00:04:36,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 00:04:36,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 00:04:36,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 00:04:36,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 00:04:36,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 00:04:36,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 00:04:36,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 00:04:36,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 00:04:36,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 00:04:36,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 00:04:36,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 00:04:36,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 00:04:36,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 00:04:36,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 00:04:36,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 00:04:36,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 00:04:36,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 00:04:36,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 00:04:36,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 00:04:36,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 00:04:36,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 00:04:36,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 00:04:36,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 00:04:36,683 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 00:04:36,683 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 00:04:36,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-11-23 00:04:37,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 00:04:37,870 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 00:04:37,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-11-23 00:04:37,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2135607/6eac475909c3451eb9926e3318c893d0/FLAGeda9b9dbb [2023-11-23 00:04:37,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de2135607/6eac475909c3451eb9926e3318c893d0 [2023-11-23 00:04:37,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 00:04:37,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 00:04:37,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 00:04:37,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 00:04:37,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 00:04:37,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:04:37" (1/1) ... [2023-11-23 00:04:37,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47aa31eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:37, skipping insertion in model container [2023-11-23 00:04:37,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:04:37" (1/1) ... [2023-11-23 00:04:37,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 00:04:38,247 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-11-23 00:04:38,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 00:04:38,271 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 00:04:38,304 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-11-23 00:04:38,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 00:04:38,405 INFO L206 MainTranslator]: Completed translation [2023-11-23 00:04:38,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38 WrapperNode [2023-11-23 00:04:38,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 00:04:38,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 00:04:38,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 00:04:38,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 00:04:38,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,457 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-23 00:04:38,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 00:04:38,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 00:04:38,458 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 00:04:38,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 00:04:38,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 00:04:38,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 00:04:38,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 00:04:38,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 00:04:38,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (1/1) ... [2023-11-23 00:04:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 00:04:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:38,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 00:04:38,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 00:04:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 00:04:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 00:04:38,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 00:04:38,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 00:04:38,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 00:04:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 00:04:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 00:04:38,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 00:04:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 00:04:38,563 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 00:04:38,690 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 00:04:38,694 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 00:04:38,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 00:04:38,937 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 00:04:38,937 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 00:04:38,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:38 BoogieIcfgContainer [2023-11-23 00:04:38,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 00:04:38,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 00:04:38,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 00:04:38,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 00:04:38,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:04:37" (1/3) ... [2023-11-23 00:04:38,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:04:38, skipping insertion in model container [2023-11-23 00:04:38,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:04:38" (2/3) ... [2023-11-23 00:04:38,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a22887d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:04:38, skipping insertion in model container [2023-11-23 00:04:38,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:38" (3/3) ... [2023-11-23 00:04:38,943 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-11-23 00:04:38,949 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 00:04:38,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 00:04:38,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 00:04:38,965 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 00:04:38,990 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 00:04:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 66 flow [2023-11-23 00:04:39,028 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-11-23 00:04:39,028 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 00:04:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 4/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-23 00:04:39,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 26 transitions, 66 flow [2023-11-23 00:04:39,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 21 transitions, 54 flow [2023-11-23 00:04:39,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 00:04:39,044 INFO L357 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, mHoare=true, 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;@7981e60c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 00:04:39,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-23 00:04:39,050 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 00:04:39,051 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-11-23 00:04:39,051 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 00:04:39,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 00:04:39,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 00:04:39,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 00:04:39,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:39,056 INFO L85 PathProgramCache]: Analyzing trace with hash -477464998, now seen corresponding path program 1 times [2023-11-23 00:04:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577959994] [2023-11-23 00:04:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577959994] [2023-11-23 00:04:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577959994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:04:39,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:04:39,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 00:04:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583857075] [2023-11-23 00:04:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:04:39,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 00:04:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 00:04:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 00:04:39,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2023-11-23 00:04:39,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 00:04:39,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2023-11-23 00:04:39,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 00:04:39,331 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2023-11-23 00:04:39,334 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 00:04:39,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 31 events. 7/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 4 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 46. Up to 23 conditions per place. [2023-11-23 00:04:39,335 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 15 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-11-23 00:04:39,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 84 flow [2023-11-23 00:04:39,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 00:04:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 00:04:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2023-11-23 00:04:39,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-23 00:04:39,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 39 transitions. [2023-11-23 00:04:39,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 39 transitions. [2023-11-23 00:04:39,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 00:04:39,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 39 transitions. [2023-11-23 00:04:39,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,361 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 54 flow. Second operand 3 states and 39 transitions. [2023-11-23 00:04:39,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 84 flow [2023-11-23 00:04:39,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 76 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 00:04:39,364 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-11-23 00:04:39,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-23 00:04:39,367 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2023-11-23 00:04:39,368 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-11-23 00:04:39,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 00:04:39,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 00:04:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 00:04:39,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 00:04:39,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1363341242, now seen corresponding path program 1 times [2023-11-23 00:04:39,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:39,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146204236] [2023-11-23 00:04:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:39,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146204236] [2023-11-23 00:04:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146204236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 00:04:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 00:04:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 00:04:39,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531161474] [2023-11-23 00:04:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 00:04:39,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 00:04:39,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 00:04:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 00:04:39,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2023-11-23 00:04:39,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:39,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 00:04:39,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2023-11-23 00:04:39,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 00:04:40,091 INFO L124 PetriNetUnfolderBase]: 12/50 cut-off events. [2023-11-23 00:04:40,091 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 00:04:40,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 50 events. 12/50 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 1 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 85. Up to 18 conditions per place. [2023-11-23 00:04:40,093 INFO L140 encePairwiseOnDemand]: 19/26 looper letters, 18 selfloop transitions, 5 changer transitions 4/30 dead transitions. [2023-11-23 00:04:40,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 121 flow [2023-11-23 00:04:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 00:04:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 00:04:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2023-11-23 00:04:40,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2023-11-23 00:04:40,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 63 transitions. [2023-11-23 00:04:40,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 63 transitions. [2023-11-23 00:04:40,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 00:04:40,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 63 transitions. [2023-11-23 00:04:40,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:40,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:40,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:40,101 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 7 states and 63 transitions. [2023-11-23 00:04:40,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 121 flow [2023-11-23 00:04:40,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 00:04:40,104 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 73 flow [2023-11-23 00:04:40,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-11-23 00:04:40,106 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-11-23 00:04:40,108 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 73 flow [2023-11-23 00:04:40,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:40,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 00:04:40,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 00:04:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 00:04:40,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 00:04:40,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash 309972033, now seen corresponding path program 1 times [2023-11-23 00:04:40,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:40,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409901430] [2023-11-23 00:04:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:40,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409901430] [2023-11-23 00:04:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409901430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247757890] [2023-11-23 00:04:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:40,481 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) [2023-11-23 00:04:40,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 00:04:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:40,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 00:04:40,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:40,645 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-23 00:04:40,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 00:04:40,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 00:04:40,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 00:04:40,771 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 00:04:40,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 00:04:40,845 INFO L349 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2023-11-23 00:04:40,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 31 [2023-11-23 00:04:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:40,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:41,062 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_53 (Array Int Int))) (= 66 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_53) 3) 0))) is different from false [2023-11-23 00:04:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247757890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:04:41,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:04:41,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-11-23 00:04:41,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421698661] [2023-11-23 00:04:41,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:04:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 00:04:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:04:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 00:04:41,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=362, Unknown=1, NotChecked=38, Total=462 [2023-11-23 00:04:41,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2023-11-23 00:04:41,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 73 flow. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:41,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 00:04:41,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2023-11-23 00:04:41,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 00:04:41,527 INFO L124 PetriNetUnfolderBase]: 24/78 cut-off events. [2023-11-23 00:04:41,528 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-23 00:04:41,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 78 events. 24/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 1 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 192. Up to 21 conditions per place. [2023-11-23 00:04:41,530 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 25 selfloop transitions, 10 changer transitions 8/45 dead transitions. [2023-11-23 00:04:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 224 flow [2023-11-23 00:04:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 00:04:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 00:04:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 93 transitions. [2023-11-23 00:04:41,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2980769230769231 [2023-11-23 00:04:41,533 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 93 transitions. [2023-11-23 00:04:41,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 93 transitions. [2023-11-23 00:04:41,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 00:04:41,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 93 transitions. [2023-11-23 00:04:41,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:41,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 26.0) internal successors, (338), 13 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:41,536 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 26.0) internal successors, (338), 13 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:41,537 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 73 flow. Second operand 12 states and 93 transitions. [2023-11-23 00:04:41,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 224 flow [2023-11-23 00:04:41,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 214 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-23 00:04:41,540 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 131 flow [2023-11-23 00:04:41,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=131, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-11-23 00:04:41,541 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-11-23 00:04:41,542 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 131 flow [2023-11-23 00:04:41,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:04:41,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 00:04:41,543 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 00:04:41,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 00:04:41,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:41,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 00:04:41,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 00:04:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1191535882, now seen corresponding path program 2 times [2023-11-23 00:04:41,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 00:04:41,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621169745] [2023-11-23 00:04:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 00:04:41,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 00:04:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 00:04:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 00:04:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621169745] [2023-11-23 00:04:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621169745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 00:04:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424343752] [2023-11-23 00:04:42,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 00:04:42,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 00:04:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 00:04:42,209 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) [2023-11-23 00:04:42,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 00:04:42,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 00:04:42,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 00:04:42,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 00:04:42,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 00:04:42,323 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-11-23 00:04:42,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-11-23 00:04:42,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 00:04:42,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 00:04:42,438 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 00:04:42,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 00:04:42,501 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 00:04:42,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 00:04:42,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 00:04:42,549 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 00:04:42,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 00:04:42,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 00:04:42,600 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 00:04:42,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 00:04:42,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 00:04:42,651 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 00:04:42,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 00:04:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 00:04:42,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 00:04:43,241 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_23| Int)) (or (forall ((v_ArrVal_110 Int)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_23| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_110)) c_~v~0.base) c_~v~0.offset))) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_23| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2023-11-23 00:06:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 7 refuted. 5 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-23 00:06:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424343752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 00:06:06,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 00:06:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 14] total 34 [2023-11-23 00:06:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698814302] [2023-11-23 00:06:06,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 00:06:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 00:06:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 00:06:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 00:06:06,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=943, Unknown=32, NotChecked=64, Total=1190 [2023-11-23 00:06:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 26 [2023-11-23 00:06:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 131 flow. Second operand has 35 states, 35 states have (on average 6.0) internal successors, (210), 35 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:06:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 00:06:06,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 26 [2023-11-23 00:06:06,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 00:06:07,014 INFO L124 PetriNetUnfolderBase]: 22/72 cut-off events. [2023-11-23 00:06:07,014 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-23 00:06:07,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 72 events. 22/72 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 1 based on Foata normal form. 3/74 useless extension candidates. Maximal degree in co-relation 237. Up to 20 conditions per place. [2023-11-23 00:06:07,016 INFO L140 encePairwiseOnDemand]: 18/26 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-11-23 00:06:07,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 259 flow [2023-11-23 00:06:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 00:06:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 00:06:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 98 transitions. [2023-11-23 00:06:07,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2692307692307692 [2023-11-23 00:06:07,017 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 98 transitions. [2023-11-23 00:06:07,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 98 transitions. [2023-11-23 00:06:07,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 00:06:07,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 98 transitions. [2023-11-23 00:06:07,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:06:07,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 26.0) internal successors, (390), 15 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:06:07,019 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 26.0) internal successors, (390), 15 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:06:07,019 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 131 flow. Second operand 14 states and 98 transitions. [2023-11-23 00:06:07,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 259 flow [2023-11-23 00:06:07,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 239 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-23 00:06:07,021 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-23 00:06:07,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-23 00:06:07,022 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2023-11-23 00:06:07,022 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-23 00:06:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.0) internal successors, (210), 35 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 00:06:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-23 00:06:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-23 00:06:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-23 00:06:07,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 00:06:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 00:06:07,236 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 00:06:07,239 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 00:06:07,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 00:06:07,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:06:07 BasicIcfg [2023-11-23 00:06:07,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 00:06:07,246 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 00:06:07,246 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 00:06:07,246 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 00:06:07,246 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:04:38" (3/4) ... [2023-11-23 00:06:07,247 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 00:06:07,250 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 00:06:07,250 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 00:06:07,253 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-11-23 00:06:07,253 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-23 00:06:07,254 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 00:06:07,254 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 00:06:07,254 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 00:06:07,320 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 00:06:07,322 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-23 00:06:07,322 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 00:06:07,323 INFO L158 Benchmark]: Toolchain (without parser) took 89425.37ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 116.0MB in the beginning and 111.8MB in the end (delta: 4.2MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,323 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 00:06:07,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 507.19ms. Allocated memory is still 174.1MB. Free memory was 116.0MB in the beginning and 127.0MB in the end (delta: -11.0MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.92ms. Allocated memory is still 174.1MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,324 INFO L158 Benchmark]: Boogie Preprocessor took 24.49ms. Allocated memory is still 174.1MB. Free memory was 124.9MB in the beginning and 123.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,324 INFO L158 Benchmark]: RCFGBuilder took 454.40ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 97.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,325 INFO L158 Benchmark]: TraceAbstraction took 88306.20ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 97.2MB in the beginning and 116.4MB in the end (delta: -19.2MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,325 INFO L158 Benchmark]: Witness Printer took 76.78ms. Allocated memory is still 234.9MB. Free memory was 116.4MB in the beginning and 111.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 00:06:07,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 507.19ms. Allocated memory is still 174.1MB. Free memory was 116.0MB in the beginning and 127.0MB in the end (delta: -11.0MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.92ms. Allocated memory is still 174.1MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.49ms. Allocated memory is still 174.1MB. Free memory was 124.9MB in the beginning and 123.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.40ms. Allocated memory is still 174.1MB. Free memory was 123.7MB in the beginning and 97.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 88306.20ms. Allocated memory was 174.1MB in the beginning and 234.9MB in the end (delta: 60.8MB). Free memory was 97.2MB in the beginning and 116.4MB in the end (delta: -19.2MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Witness Printer took 76.78ms. Allocated memory is still 234.9MB. Free memory was 116.4MB in the beginning and 111.8MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 88.2s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 223 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 76 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 819 IncrementalHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 6 mSDtfsCounter, 819 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 84.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=3, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 85.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 163 ConstructedInterpolants, 21 QuantifiedInterpolants, 2342 SizeOfPredicates, 28 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 8/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 00:06:07,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE