./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB --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 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:44:38,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:44:38,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:44:38,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:44:38,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:44:38,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:44:38,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:44:38,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:44:38,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:44:38,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:44:38,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:44:38,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:44:38,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:44:38,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:44:38,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:44:38,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:44:38,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:44:38,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:44:38,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:38,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:38,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:38,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:44:38,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:44:38,554 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 [2024-11-28 02:44:38,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:44:38,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:44:38,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:44:38,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:44:38,914 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:44:38,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-28 02:44:41,966 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/data/54a404a5d/f2675a43f0aa4802be22156004b4310c/FLAG042ed289a [2024-11-28 02:44:42,214 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:44:42,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-11-28 02:44:42,222 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/data/54a404a5d/f2675a43f0aa4802be22156004b4310c/FLAG042ed289a [2024-11-28 02:44:42,236 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/data/54a404a5d/f2675a43f0aa4802be22156004b4310c [2024-11-28 02:44:42,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:44:42,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:44:42,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:44:42,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:44:42,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:44:42,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa5839b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42, skipping insertion in model container [2024-11-28 02:44:42,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:44:42,506 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-28 02:44:42,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:44:42,536 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:44:42,565 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[4035,4048] [2024-11-28 02:44:42,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:44:42,591 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:44:42,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42 WrapperNode [2024-11-28 02:44:42,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:44:42,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:44:42,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:44:42,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:44:42,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,645 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 418 [2024-11-28 02:44:42,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:44:42,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:44:42,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:44:42,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:44:42,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,680 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 15, 9]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-11-28 02:44:42,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,693 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:44:42,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:44:42,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:44:42,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:44:42,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (1/1) ... [2024-11-28 02:44:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:44:42,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:44:42,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:44:42,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:44:42,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:44:42,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:44:42,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:44:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:44:42,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:44:42,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:44:42,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:44:42,789 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:44:42,949 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:44:42,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:44:43,792 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:44:43,792 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:44:44,506 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:44:44,506 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 02:44:44,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:44:44 BoogieIcfgContainer [2024-11-28 02:44:44,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:44:44,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:44:44,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:44:44,514 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:44:44,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:44:42" (1/3) ... [2024-11-28 02:44:44,515 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f43f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:44:44, skipping insertion in model container [2024-11-28 02:44:44,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:44:42" (2/3) ... [2024-11-28 02:44:44,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f43f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:44:44, skipping insertion in model container [2024-11-28 02:44:44,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:44:44" (3/3) ... [2024-11-28 02:44:44,518 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2024-11-28 02:44:44,538 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:44:44,542 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-node-subst.wvr.c that has 4 procedures, 26 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 02:44:44,542 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:44:44,662 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:44:44,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2024-11-28 02:44:44,761 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-11-28 02:44:44,765 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:44:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-28 02:44:44,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2024-11-28 02:44:44,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2024-11-28 02:44:44,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:44:44,790 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;@49612ab1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:44:44,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:44:44,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:44:44,808 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2024-11-28 02:44:44,808 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:44:44,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:44,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:44,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:44,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:44,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1969650014, now seen corresponding path program 1 times [2024-11-28 02:44:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814095271] [2024-11-28 02:44:44,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:44:45,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:45,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814095271] [2024-11-28 02:44:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814095271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:44:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046196840] [2024-11-28 02:44:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:45,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:44:45,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:45,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:44:45,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:44:45,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:45,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:45,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:45,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:45,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:45,862 INFO L124 PetriNetUnfolderBase]: 38/83 cut-off events. [2024-11-28 02:44:45,862 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:44:45,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 83 events. 38/83 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 120. Up to 82 conditions per place. [2024-11-28 02:44:45,866 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2024-11-28 02:44:45,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 128 flow [2024-11-28 02:44:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:44:45,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:44:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-11-28 02:44:45,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-11-28 02:44:45,886 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 40 transitions. [2024-11-28 02:44:45,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 128 flow [2024-11-28 02:44:45,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:44:45,896 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 72 flow [2024-11-28 02:44:45,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2024-11-28 02:44:45,902 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2024-11-28 02:44:45,902 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 72 flow [2024-11-28 02:44:45,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:45,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:45,903 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:44:45,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:45,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 72316183, now seen corresponding path program 1 times [2024-11-28 02:44:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959835130] [2024-11-28 02:44:45,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:44:46,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959835130] [2024-11-28 02:44:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959835130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671753039] [2024-11-28 02:44:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:46,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:44:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:46,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:44:46,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:44:46,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:46,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:46,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:46,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:46,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:46,477 INFO L124 PetriNetUnfolderBase]: 38/84 cut-off events. [2024-11-28 02:44:46,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:44:46,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 84 events. 38/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 172. Up to 81 conditions per place. [2024-11-28 02:44:46,478 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2024-11-28 02:44:46,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 130 flow [2024-11-28 02:44:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-28 02:44:46,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-28 02:44:46,481 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 72 flow. Second operand 4 states and 45 transitions. [2024-11-28 02:44:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 130 flow [2024-11-28 02:44:46,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 02:44:46,482 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 86 flow [2024-11-28 02:44:46,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-28 02:44:46,484 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-11-28 02:44:46,484 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 86 flow [2024-11-28 02:44:46,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:46,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:46,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:46,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:44:46,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:46,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1922135772, now seen corresponding path program 1 times [2024-11-28 02:44:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920675298] [2024-11-28 02:44:46,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:44:46,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:46,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920675298] [2024-11-28 02:44:46,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920675298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:46,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:46,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376278461] [2024-11-28 02:44:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:46,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:44:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:46,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:44:46,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:44:46,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:46,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:46,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:46,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:46,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:46,973 INFO L124 PetriNetUnfolderBase]: 38/85 cut-off events. [2024-11-28 02:44:46,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:44:46,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 85 events. 38/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 82 conditions per place. [2024-11-28 02:44:46,975 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 25 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-28 02:44:46,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 146 flow [2024-11-28 02:44:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-28 02:44:46,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-28 02:44:46,977 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 86 flow. Second operand 4 states and 45 transitions. [2024-11-28 02:44:46,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 146 flow [2024-11-28 02:44:46,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:44:46,978 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 103 flow [2024-11-28 02:44:46,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-28 02:44:46,979 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-28 02:44:46,979 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 103 flow [2024-11-28 02:44:46,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:46,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:46,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:44:46,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:44:46,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:46,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2099698462, now seen corresponding path program 1 times [2024-11-28 02:44:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:46,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728943084] [2024-11-28 02:44:46,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:44:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728943084] [2024-11-28 02:44:47,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728943084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:47,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:47,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972235168] [2024-11-28 02:44:47,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:47,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:44:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:47,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:44:47,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:44:47,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:47,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2024-11-28 02:44:47,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:47,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:47,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:47,396 INFO L124 PetriNetUnfolderBase]: 38/86 cut-off events. [2024-11-28 02:44:47,396 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:44:47,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 86 events. 38/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 179. Up to 84 conditions per place. [2024-11-28 02:44:47,397 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-28 02:44:47,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 165 flow [2024-11-28 02:44:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-28 02:44:47,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-28 02:44:47,401 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 103 flow. Second operand 4 states and 44 transitions. [2024-11-28 02:44:47,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 165 flow [2024-11-28 02:44:47,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:47,403 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 113 flow [2024-11-28 02:44:47,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-28 02:44:47,406 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-11-28 02:44:47,406 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 113 flow [2024-11-28 02:44:47,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 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) [2024-11-28 02:44:47,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:47,406 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 02:44:47,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:44:47,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:47,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1152425512, now seen corresponding path program 1 times [2024-11-28 02:44:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618697067] [2024-11-28 02:44:47,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:44:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618697067] [2024-11-28 02:44:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618697067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:47,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396910028] [2024-11-28 02:44:47,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:47,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:44:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:47,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:44:47,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:44:47,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:47,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:47,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:47,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:47,794 INFO L124 PetriNetUnfolderBase]: 38/87 cut-off events. [2024-11-28 02:44:47,794 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 02:44:47,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 87 events. 38/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 185. Up to 85 conditions per place. [2024-11-28 02:44:47,797 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 28 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-28 02:44:47,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 177 flow [2024-11-28 02:44:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-28 02:44:47,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-28 02:44:47,799 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 113 flow. Second operand 4 states and 44 transitions. [2024-11-28 02:44:47,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 177 flow [2024-11-28 02:44:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 171 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:47,803 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 121 flow [2024-11-28 02:44:47,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-28 02:44:47,804 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-28 02:44:47,804 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 121 flow [2024-11-28 02:44:47,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:47,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:47,805 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-11-28 02:44:47,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:44:47,805 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:47,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash 762069127, now seen corresponding path program 1 times [2024-11-28 02:44:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:47,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211182627] [2024-11-28 02:44:47,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:44:48,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211182627] [2024-11-28 02:44:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211182627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:48,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:48,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:44:48,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023688165] [2024-11-28 02:44:48,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:48,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:44:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:48,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:44:48,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:44:48,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:48,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:48,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:48,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:48,243 INFO L124 PetriNetUnfolderBase]: 38/88 cut-off events. [2024-11-28 02:44:48,243 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:44:48,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 88 events. 38/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 32 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 190. Up to 86 conditions per place. [2024-11-28 02:44:48,244 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-28 02:44:48,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 187 flow [2024-11-28 02:44:48,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:44:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:44:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2024-11-28 02:44:48,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-11-28 02:44:48,248 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 121 flow. Second operand 4 states and 44 transitions. [2024-11-28 02:44:48,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 187 flow [2024-11-28 02:44:48,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 181 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:48,250 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 129 flow [2024-11-28 02:44:48,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-28 02:44:48,251 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-11-28 02:44:48,251 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 129 flow [2024-11-28 02:44:48,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:48,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:48,251 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:44:48,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:44:48,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:48,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:48,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1035330192, now seen corresponding path program 1 times [2024-11-28 02:44:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:48,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547662242] [2024-11-28 02:44:48,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:44:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:44:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:44:52,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:52,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547662242] [2024-11-28 02:44:52,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547662242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:52,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:52,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:44:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213643176] [2024-11-28 02:44:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:52,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:52,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:52,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:52,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:52,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:52,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:52,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:52,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:52,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:53,061 INFO L124 PetriNetUnfolderBase]: 39/107 cut-off events. [2024-11-28 02:44:53,061 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:44:53,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 107 events. 39/107 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 287 event pairs, 7 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 231. Up to 41 conditions per place. [2024-11-28 02:44:53,063 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 42 selfloop transitions, 2 changer transitions 7/52 dead transitions. [2024-11-28 02:44:53,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 278 flow [2024-11-28 02:44:53,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:44:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:44:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-11-28 02:44:53,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-11-28 02:44:53,065 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 129 flow. Second operand 5 states and 66 transitions. [2024-11-28 02:44:53,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 278 flow [2024-11-28 02:44:53,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 272 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:53,068 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 138 flow [2024-11-28 02:44:53,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-11-28 02:44:53,069 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-11-28 02:44:53,069 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 138 flow [2024-11-28 02:44:53,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:53,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:53,069 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:44:53,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:44:53,069 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:53,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash 535453708, now seen corresponding path program 2 times [2024-11-28 02:44:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:53,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21891434] [2024-11-28 02:44:53,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:44:53,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:53,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:44:53,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:44:55,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:55,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21891434] [2024-11-28 02:44:55,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21891434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:55,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:55,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:44:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397482319] [2024-11-28 02:44:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:55,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:55,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:55,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:55,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:55,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:55,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:55,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:55,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:56,298 INFO L124 PetriNetUnfolderBase]: 35/112 cut-off events. [2024-11-28 02:44:56,298 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-28 02:44:56,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 112 events. 35/112 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 305 event pairs, 10 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2024-11-28 02:44:56,299 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 5/50 dead transitions. [2024-11-28 02:44:56,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 286 flow [2024-11-28 02:44:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:44:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:44:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-28 02:44:56,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-11-28 02:44:56,301 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 138 flow. Second operand 5 states and 63 transitions. [2024-11-28 02:44:56,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 286 flow [2024-11-28 02:44:56,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 279 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:56,303 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 155 flow [2024-11-28 02:44:56,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-11-28 02:44:56,304 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-11-28 02:44:56,304 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 155 flow [2024-11-28 02:44:56,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:56,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:56,305 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:44:56,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:44:56,305 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:56,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash -826489758, now seen corresponding path program 3 times [2024-11-28 02:44:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993488184] [2024-11-28 02:44:56,306 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:44:56,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:56,471 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:44:56,471 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:44:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:44:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:44:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993488184] [2024-11-28 02:44:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993488184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:44:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:44:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:44:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573306680] [2024-11-28 02:44:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:44:58,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:44:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:44:58,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:44:58,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:44:58,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:44:58,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:58,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:44:58,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:44:58,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:44:58,504 INFO L124 PetriNetUnfolderBase]: 35/115 cut-off events. [2024-11-28 02:44:58,504 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-28 02:44:58,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 115 events. 35/115 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 355 event pairs, 8 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 353. Up to 50 conditions per place. [2024-11-28 02:44:58,506 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 40 selfloop transitions, 2 changer transitions 9/52 dead transitions. [2024-11-28 02:44:58,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 318 flow [2024-11-28 02:44:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:44:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:44:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-28 02:44:58,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-11-28 02:44:58,507 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 155 flow. Second operand 5 states and 64 transitions. [2024-11-28 02:44:58,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 318 flow [2024-11-28 02:44:58,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 307 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 02:44:58,510 INFO L231 Difference]: Finished difference. Result has 53 places, 35 transitions, 162 flow [2024-11-28 02:44:58,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2024-11-28 02:44:58,511 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-11-28 02:44:58,511 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 162 flow [2024-11-28 02:44:58,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:44:58,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:44:58,511 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:44:58,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:44:58,512 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:44:58,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:44:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -593362352, now seen corresponding path program 4 times [2024-11-28 02:44:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:44:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733568145] [2024-11-28 02:44:58,513 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:44:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:44:58,613 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:44:58,613 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:45:01,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:01,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733568145] [2024-11-28 02:45:01,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733568145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:01,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:01,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:45:01,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282647332] [2024-11-28 02:45:01,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:01,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:45:01,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:01,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:45:01,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:01,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:45:01,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:01,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:45:01,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:45:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:45:02,287 INFO L124 PetriNetUnfolderBase]: 30/98 cut-off events. [2024-11-28 02:45:02,288 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2024-11-28 02:45:02,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 98 events. 30/98 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 15 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 332. Up to 64 conditions per place. [2024-11-28 02:45:02,291 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 40 selfloop transitions, 3 changer transitions 7/51 dead transitions. [2024-11-28 02:45:02,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 330 flow [2024-11-28 02:45:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:45:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-28 02:45:02,292 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-28 02:45:02,292 INFO L175 Difference]: Start difference. First operand has 53 places, 35 transitions, 162 flow. Second operand 5 states and 62 transitions. [2024-11-28 02:45:02,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 330 flow [2024-11-28 02:45:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 311 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 02:45:02,297 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 169 flow [2024-11-28 02:45:02,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2024-11-28 02:45:02,298 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-28 02:45:02,298 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 169 flow [2024-11-28 02:45:02,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:02,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:45:02,299 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:45:02,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:45:02,299 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:45:02,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1246248816, now seen corresponding path program 5 times [2024-11-28 02:45:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:02,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27573755] [2024-11-28 02:45:02,300 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:45:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:02,678 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:45:02,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:45:04,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27573755] [2024-11-28 02:45:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27573755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:45:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821168373] [2024-11-28 02:45:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:45:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:04,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:45:04,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:04,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:45:04,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:04,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:45:04,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:45:04,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:45:05,254 INFO L124 PetriNetUnfolderBase]: 24/77 cut-off events. [2024-11-28 02:45:05,255 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-28 02:45:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 77 events. 24/77 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 7 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 276. Up to 45 conditions per place. [2024-11-28 02:45:05,256 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 1 changer transitions 14/49 dead transitions. [2024-11-28 02:45:05,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 307 flow [2024-11-28 02:45:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:45:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-28 02:45:05,259 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-11-28 02:45:05,260 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 169 flow. Second operand 5 states and 62 transitions. [2024-11-28 02:45:05,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 307 flow [2024-11-28 02:45:05,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 295 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 02:45:05,262 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 148 flow [2024-11-28 02:45:05,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2024-11-28 02:45:05,263 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-11-28 02:45:05,263 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 148 flow [2024-11-28 02:45:05,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:05,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:45:05,264 INFO L206 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-11-28 02:45:05,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:45:05,264 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:45:05,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2085898496, now seen corresponding path program 6 times [2024-11-28 02:45:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386411815] [2024-11-28 02:45:05,265 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:45:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:05,364 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:45:05,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:45:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:45:06,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:06,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386411815] [2024-11-28 02:45:06,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386411815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:06,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:06,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:45:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751291591] [2024-11-28 02:45:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:06,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:45:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:06,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:45:06,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:45:06,896 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2024-11-28 02:45:06,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:06,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:45:06,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2024-11-28 02:45:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:45:07,186 INFO L124 PetriNetUnfolderBase]: 15/51 cut-off events. [2024-11-28 02:45:07,187 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-28 02:45:07,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 51 events. 15/51 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 5 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 181. Up to 38 conditions per place. [2024-11-28 02:45:07,187 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-11-28 02:45:07,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 236 flow [2024-11-28 02:45:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:45:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:45:07,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-11-28 02:45:07,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-11-28 02:45:07,190 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 148 flow. Second operand 5 states and 52 transitions. [2024-11-28 02:45:07,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 236 flow [2024-11-28 02:45:07,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 37 transitions, 218 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-28 02:45:07,192 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-11-28 02:45:07,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-11-28 02:45:07,193 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-11-28 02:45:07,193 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-11-28 02:45:07,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:45:07,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-28 02:45:07,196 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-28 02:45:07,196 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-28 02:45:07,196 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-28 02:45:07,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:45:07,197 INFO L422 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:07,200 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:45:07,200 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:45:07,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:45:07 BasicIcfg [2024-11-28 02:45:07,206 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:45:07,206 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:45:07,207 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:45:07,207 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:45:07,207 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:44:44" (3/4) ... [2024-11-28 02:45:07,210 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:45:07,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 02:45:07,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 02:45:07,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-28 02:45:07,222 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 322 nodes and edges [2024-11-28 02:45:07,223 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-28 02:45:07,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-28 02:45:07,224 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:45:07,342 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:45:07,342 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:45:07,342 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:45:07,345 INFO L158 Benchmark]: Toolchain (without parser) took 25103.43ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 91.5MB in the beginning and 395.9MB in the end (delta: -304.4MB). Peak memory consumption was 152.7MB. Max. memory is 16.1GB. [2024-11-28 02:45:07,345 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:45:07,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.81ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 77.8MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:45:07,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.46ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 74.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:45:07,346 INFO L158 Benchmark]: Boogie Preprocessor took 62.59ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 71.2MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:45:07,350 INFO L158 Benchmark]: RCFGBuilder took 1797.74ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 38.7MB in the end (delta: 32.5MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2024-11-28 02:45:07,351 INFO L158 Benchmark]: TraceAbstraction took 22697.07ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 37.9MB in the beginning and 404.3MB in the end (delta: -366.4MB). Peak memory consumption was 101.4MB. Max. memory is 16.1GB. [2024-11-28 02:45:07,351 INFO L158 Benchmark]: Witness Printer took 135.98ms. Allocated memory is still 578.8MB. Free memory was 404.3MB in the beginning and 395.9MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:45:07,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.81ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 77.8MB in the end (delta: 13.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.46ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 74.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.59ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 71.2MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1797.74ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 38.7MB in the end (delta: 32.5MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22697.07ms. Allocated memory was 117.4MB in the beginning and 578.8MB in the end (delta: 461.4MB). Free memory was 37.9MB in the beginning and 404.3MB in the end (delta: -366.4MB). Peak memory consumption was 101.4MB. Max. memory is 16.1GB. * Witness Printer took 135.98ms. Allocated memory is still 578.8MB. Free memory was 404.3MB in the beginning and 395.9MB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 109]: 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 7 procedures, 35 locations, 4 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: 22.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 189 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1061 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 1061 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=10, InterpolantAutomatonStates: 53, 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: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 303 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 3389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 51/51 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:45:07,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_517f923e-1f3e-4c04-b122-1c987ec62b4f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE