./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/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 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:33:53,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:33:53,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:33:53,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:33:53,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:33:53,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:33:53,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:33:53,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:33:53,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:33:53,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:33:53,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:33:53,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:33:53,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:33:53,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:33:53,575 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:33:53,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:33:53,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:33:53,576 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:33:53,577 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:33:53,577 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:33:53,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:53,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:33:53,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:53,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:53,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:33:53,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:53,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:33:53,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:33:53,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:33:53,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:33:53,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:33:53,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:33:53,581 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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/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 -> 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 [2024-11-27 20:33:53,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:33:53,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:33:53,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:33:53,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:33:53,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:33:53,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-11-27 20:33:56,974 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/data/963e515c2/56ac1af3bb0b4fdc985e7f3031d512e9/FLAG2370f909e [2024-11-27 20:33:57,315 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:33:57,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-11-27 20:33:57,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/data/963e515c2/56ac1af3bb0b4fdc985e7f3031d512e9/FLAG2370f909e [2024-11-27 20:33:57,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/data/963e515c2/56ac1af3bb0b4fdc985e7f3031d512e9 [2024-11-27 20:33:57,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:33:57,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:33:57,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:57,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:33:57,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:33:57,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3fc4ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57, skipping insertion in model container [2024-11-27 20:33:57,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:33:57,680 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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2043,2056] [2024-11-27 20:33:57,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:57,701 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:33:57,738 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_1b55b973-e527-442a-b75c-eb1f3ec64ac8/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2043,2056] [2024-11-27 20:33:57,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:57,762 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:33:57,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57 WrapperNode [2024-11-27 20:33:57,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:57,765 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:57,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:33:57,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:33:57,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,808 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2024-11-27 20:33:57,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:57,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:33:57,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:33:57,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:33:57,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,841 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:33:57,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,847 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,848 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:33:57,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:33:57,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:33:57,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:33:57,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (1/1) ... [2024-11-27 20:33:57,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:57,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:57,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:33:57,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:33:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:33:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:33:57,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:33:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:33:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:33:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:33:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:33:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:33:57,946 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:33:58,054 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:33:58,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:33:58,275 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:33:58,275 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:33:58,427 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:33:58,427 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:33:58,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:58 BoogieIcfgContainer [2024-11-27 20:33:58,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:33:58,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:33:58,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:33:58,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:33:58,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:33:57" (1/3) ... [2024-11-27 20:33:58,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35672017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:58, skipping insertion in model container [2024-11-27 20:33:58,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:57" (2/3) ... [2024-11-27 20:33:58,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35672017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:58, skipping insertion in model container [2024-11-27 20:33:58,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:58" (3/3) ... [2024-11-27 20:33:58,445 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-11-27 20:33:58,469 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:33:58,471 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-2-unrolled.wvr.c that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 20:33:58,471 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:33:58,545 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:33:58,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 28 transitions, 70 flow [2024-11-27 20:33:58,631 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-11-27 20:33:58,634 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:33:58,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 2/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-27 20:33:58,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 28 transitions, 70 flow [2024-11-27 20:33:58,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 62 flow [2024-11-27 20:33:58,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:33:58,667 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;@7af0e403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:33:58,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-27 20:33:58,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:33:58,682 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-11-27 20:33:58,682 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:33:58,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:58,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:58,684 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:33:58,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:58,695 INFO L85 PathProgramCache]: Analyzing trace with hash -890746549, now seen corresponding path program 1 times [2024-11-27 20:33:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64186385] [2024-11-27 20:33:58,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:59,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64186385] [2024-11-27 20:33:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64186385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:59,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:33:59,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015472430] [2024-11-27 20:33:59,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:59,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:33:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:59,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:33:59,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:33:59,239 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-11-27 20:33:59,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:59,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:59,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-11-27 20:33:59,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:59,461 INFO L124 PetriNetUnfolderBase]: 161/295 cut-off events. [2024-11-27 20:33:59,462 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-27 20:33:59,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 295 events. 161/295 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1080 event pairs, 32 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 526. Up to 243 conditions per place. [2024-11-27 20:33:59,471 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 23 selfloop transitions, 5 changer transitions 1/34 dead transitions. [2024-11-27 20:33:59,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 147 flow [2024-11-27 20:33:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:33:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:33:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-27 20:33:59,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-27 20:33:59,497 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 62 flow. Second operand 3 states and 51 transitions. [2024-11-27 20:33:59,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 147 flow [2024-11-27 20:33:59,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:33:59,507 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 79 flow [2024-11-27 20:33:59,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-27 20:33:59,516 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2024-11-27 20:33:59,516 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 79 flow [2024-11-27 20:33:59,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:59,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:59,516 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] [2024-11-27 20:33:59,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:33:59,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:33:59,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:59,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1696801960, now seen corresponding path program 1 times [2024-11-27 20:33:59,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:59,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345035487] [2024-11-27 20:33:59,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:59,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345035487] [2024-11-27 20:33:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345035487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:59,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:33:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842467295] [2024-11-27 20:33:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:59,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:33:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:59,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:33:59,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:33:59,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-11-27 20:33:59,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:33:59,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:59,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-11-27 20:33:59,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:00,111 INFO L124 PetriNetUnfolderBase]: 199/363 cut-off events. [2024-11-27 20:34:00,111 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-27 20:34:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 363 events. 199/363 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1466 event pairs, 32 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 200. Up to 202 conditions per place. [2024-11-27 20:34:00,116 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 35 selfloop transitions, 10 changer transitions 3/55 dead transitions. [2024-11-27 20:34:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 241 flow [2024-11-27 20:34:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-27 20:34:00,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-27 20:34:00,119 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 79 flow. Second operand 5 states and 88 transitions. [2024-11-27 20:34:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 241 flow [2024-11-27 20:34:00,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:00,122 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 135 flow [2024-11-27 20:34:00,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-11-27 20:34:00,123 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-27 20:34:00,123 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 135 flow [2024-11-27 20:34:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:34:00,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:00,124 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] [2024-11-27 20:34:00,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:34:00,124 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:34:00,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1411022424, now seen corresponding path program 2 times [2024-11-27 20:34:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001761340] [2024-11-27 20:34:00,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:00,153 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:00,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001761340] [2024-11-27 20:34:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001761340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:00,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:00,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242229083] [2024-11-27 20:34:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:00,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:00,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:00,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:00,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-11-27 20:34:00,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:34:00,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:00,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-11-27 20:34:00,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:00,614 INFO L124 PetriNetUnfolderBase]: 173/336 cut-off events. [2024-11-27 20:34:00,614 INFO L125 PetriNetUnfolderBase]: For 221/225 co-relation queries the response was YES. [2024-11-27 20:34:00,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 336 events. 173/336 cut-off events. For 221/225 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1336 event pairs, 11 based on Foata normal form. 21/355 useless extension candidates. Maximal degree in co-relation 278. Up to 132 conditions per place. [2024-11-27 20:34:00,621 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 39 selfloop transitions, 12 changer transitions 3/61 dead transitions. [2024-11-27 20:34:00,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 339 flow [2024-11-27 20:34:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-27 20:34:00,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-27 20:34:00,626 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 135 flow. Second operand 5 states and 89 transitions. [2024-11-27 20:34:00,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 339 flow [2024-11-27 20:34:00,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:00,633 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 221 flow [2024-11-27 20:34:00,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-27 20:34:00,637 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-11-27 20:34:00,637 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 221 flow [2024-11-27 20:34:00,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-27 20:34:00,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:00,638 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] [2024-11-27 20:34:00,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:34:00,638 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:34:00,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:00,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1113428773, now seen corresponding path program 1 times [2024-11-27 20:34:00,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:00,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932201399] [2024-11-27 20:34:00,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932201399] [2024-11-27 20:34:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932201399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:00,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655329254] [2024-11-27 20:34:00,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:00,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:00,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:00,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:00,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:00,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-11-27 20:34:00,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:34:00,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:00,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-11-27 20:34:00,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:01,105 INFO L124 PetriNetUnfolderBase]: 178/347 cut-off events. [2024-11-27 20:34:01,106 INFO L125 PetriNetUnfolderBase]: For 768/774 co-relation queries the response was YES. [2024-11-27 20:34:01,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 347 events. 178/347 cut-off events. For 768/774 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1415 event pairs, 23 based on Foata normal form. 7/347 useless extension candidates. Maximal degree in co-relation 435. Up to 215 conditions per place. [2024-11-27 20:34:01,111 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 42 selfloop transitions, 9 changer transitions 4/62 dead transitions. [2024-11-27 20:34:01,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 425 flow [2024-11-27 20:34:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-11-27 20:34:01,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-27 20:34:01,113 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 221 flow. Second operand 5 states and 86 transitions. [2024-11-27 20:34:01,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 425 flow [2024-11-27 20:34:01,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 421 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:01,120 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 272 flow [2024-11-27 20:34:01,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-27 20:34:01,121 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-11-27 20:34:01,122 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 272 flow [2024-11-27 20:34:01,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:34:01,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:01,122 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] [2024-11-27 20:34:01,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:34:01,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:34:01,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 184604129, now seen corresponding path program 2 times [2024-11-27 20:34:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709859157] [2024-11-27 20:34:01,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:01,141 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:01,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:01,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709859157] [2024-11-27 20:34:01,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709859157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:01,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:01,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:34:01,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950052852] [2024-11-27 20:34:01,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:01,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:34:01,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:01,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:34:01,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:34:01,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-11-27 20:34:01,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:34:01,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:01,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-11-27 20:34:01,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:01,493 INFO L124 PetriNetUnfolderBase]: 159/320 cut-off events. [2024-11-27 20:34:01,493 INFO L125 PetriNetUnfolderBase]: For 890/898 co-relation queries the response was YES. [2024-11-27 20:34:01,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 320 events. 159/320 cut-off events. For 890/898 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1173 event pairs, 24 based on Foata normal form. 18/336 useless extension candidates. Maximal degree in co-relation 830. Up to 149 conditions per place. [2024-11-27 20:34:01,497 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 42 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2024-11-27 20:34:01,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 484 flow [2024-11-27 20:34:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-27 20:34:01,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:34:01,500 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 272 flow. Second operand 5 states and 84 transitions. [2024-11-27 20:34:01,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 484 flow [2024-11-27 20:34:01,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:01,507 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 335 flow [2024-11-27 20:34:01,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-27 20:34:01,508 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-11-27 20:34:01,509 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 335 flow [2024-11-27 20:34:01,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 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) [2024-11-27 20:34:01,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:01,509 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] [2024-11-27 20:34:01,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:34:01,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 20:34:01,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1125564562, now seen corresponding path program 1 times [2024-11-27 20:34:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510875756] [2024-11-27 20:34:01,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510875756] [2024-11-27 20:34:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510875756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:01,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:34:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668963196] [2024-11-27 20:34:01,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:01,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:01,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:01,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:01,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-11-27 20:34:01,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-27 20:34:01,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:01,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-11-27 20:34:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:02,211 INFO L124 PetriNetUnfolderBase]: 164/320 cut-off events. [2024-11-27 20:34:02,211 INFO L125 PetriNetUnfolderBase]: For 1088/1102 co-relation queries the response was YES. [2024-11-27 20:34:02,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 320 events. 164/320 cut-off events. For 1088/1102 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1153 event pairs, 37 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 933. Up to 105 conditions per place. [2024-11-27 20:34:02,215 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-11-27 20:34:02,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 559 flow [2024-11-27 20:34:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-11-27 20:34:02,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-27 20:34:02,218 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 335 flow. Second operand 6 states and 78 transitions. [2024-11-27 20:34:02,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 559 flow [2024-11-27 20:34:02,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 542 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:02,229 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-11-27 20:34:02,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-11-27 20:34:02,230 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-11-27 20:34:02,232 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-11-27 20:34:02,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-27 20:34:02,235 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-27 20:34:02,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-27 20:34:02,236 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-27 20:34:02,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:34:02,237 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-27 20:34:02,242 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:34:02,242 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:34:02,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:34:02 BasicIcfg [2024-11-27 20:34:02,255 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:34:02,255 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:34:02,256 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:34:02,256 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:34:02,257 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:58" (3/4) ... [2024-11-27 20:34:02,260 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:34:02,264 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-27 20:34:02,264 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-27 20:34:02,270 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2024-11-27 20:34:02,272 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-27 20:34:02,272 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-27 20:34:02,272 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-27 20:34:02,369 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:34:02,370 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:34:02,370 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:34:02,371 INFO L158 Benchmark]: Toolchain (without parser) took 4994.62ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 58.4MB in the end (delta: 60.1MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2024-11-27 20:34:02,372 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:34:02,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.42ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 107.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:34:02,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.23ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.8MB in the end (delta: 940.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:34:02,374 INFO L158 Benchmark]: Boogie Preprocessor took 51.27ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 104.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:34:02,374 INFO L158 Benchmark]: RCFGBuilder took 565.31ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.2MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 20:34:02,377 INFO L158 Benchmark]: TraceAbstraction took 3824.16ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 63.2MB in the end (delta: 20.5MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-11-27 20:34:02,378 INFO L158 Benchmark]: Witness Printer took 114.44ms. Allocated memory is still 142.6MB. Free memory was 63.2MB in the beginning and 58.4MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:34:02,379 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 142.6MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.42ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 107.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.23ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.8MB in the end (delta: 940.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.27ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 104.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 565.31ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 84.2MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3824.16ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 63.2MB in the end (delta: 20.5MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 114.44ms. Allocated memory is still 142.6MB. Free memory was 63.2MB in the beginning and 58.4MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 444 IncrementalHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 5 mSDtfsCounter, 444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 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! [2024-11-27 20:34:02,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b55b973-e527-442a-b75c-eb1f3ec64ac8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE