./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.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_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1 --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 aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:45:59,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:45:59,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:45:59,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:45:59,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:45:59,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:45:59,659 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:45:59,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:45:59,660 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:45:59,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:45:59,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:45:59,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:45:59,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:45:59,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:45:59,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:45:59,662 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:45:59,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:45:59,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:45:59,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:45:59,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:45:59,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:45:59,664 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_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1 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 -> aee5edffc06a346ddce4a9cfa75b4213bee8ccd3009aa5307dc09037d26d7f28 [2024-12-02 08:45:59,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:45:59,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:45:59,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:45:59,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:45:59,884 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:45:59,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2024-12-02 08:46:02,584 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/data/449535738/be61fca150db42dbb0bf9d95adb614fa/FLAGb3085c89c [2024-12-02 08:46:02,798 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:46:02,799 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2024-12-02 08:46:02,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/data/449535738/be61fca150db42dbb0bf9d95adb614fa/FLAGb3085c89c [2024-12-02 08:46:03,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/data/449535738/be61fca150db42dbb0bf9d95adb614fa [2024-12-02 08:46:03,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:46:03,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:46:03,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:46:03,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:46:03,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:46:03,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771d64fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03, skipping insertion in model container [2024-12-02 08:46:03,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:46:03,326 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_73aee6d0-ace9-40d0-b2ba-19172fdca200/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2024-12-02 08:46:03,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:46:03,344 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:46:03,368 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_73aee6d0-ace9-40d0-b2ba-19172fdca200/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c[4303,4316] [2024-12-02 08:46:03,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:46:03,386 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:46:03,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03 WrapperNode [2024-12-02 08:46:03,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:46:03,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:46:03,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:46:03,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:46:03,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,427 INFO L138 Inliner]: procedures = 28, calls = 58, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 372 [2024-12-02 08:46:03,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:46:03,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:46:03,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:46:03,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:46:03,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,460 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 08:46:03,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,470 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:46:03,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:46:03,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:46:03,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:46:03,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (1/1) ... [2024-12-02 08:46:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:46:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:46:03,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:46:03,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 08:46:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 08:46:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 08:46:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 08:46:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 08:46:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-12-02 08:46:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-12-02 08:46:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:46:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:46:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:46:03,543 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:46:03,647 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:46:03,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:46:04,098 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:46:04,098 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:46:04,387 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:46:04,388 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 08:46:04,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:46:04 BoogieIcfgContainer [2024-12-02 08:46:04,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:46:04,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:46:04,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:46:04,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:46:04,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:46:03" (1/3) ... [2024-12-02 08:46:04,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3367b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:46:04, skipping insertion in model container [2024-12-02 08:46:04,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:46:03" (2/3) ... [2024-12-02 08:46:04,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3367b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:46:04, skipping insertion in model container [2024-12-02 08:46:04,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:46:04" (3/3) ... [2024-12-02 08:46:04,395 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2024-12-02 08:46:04,407 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:46:04,408 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-2.wvr.c that has 7 procedures, 62 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-12-02 08:46:04,408 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:46:04,516 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-12-02 08:46:04,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 234 flow [2024-12-02 08:46:04,593 INFO L124 PetriNetUnfolderBase]: 13/68 cut-off events. [2024-12-02 08:46:04,595 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:46:04,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 68 events. 13/68 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 161 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2024-12-02 08:46:04,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 234 flow [2024-12-02 08:46:04,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 67 transitions, 182 flow [2024-12-02 08:46:04,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:46:04,620 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;@5842483e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:46:04,620 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-12-02 08:46:04,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:46:04,645 INFO L124 PetriNetUnfolderBase]: 13/66 cut-off events. [2024-12-02 08:46:04,645 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 08:46:04,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:46:04,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:04,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:46:04,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash -210719676, now seen corresponding path program 1 times [2024-12-02 08:46:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:04,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147239995] [2024-12-02 08:46:04,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:04,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:46:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147239995] [2024-12-02 08:46:04,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147239995] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:46:04,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:46:04,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:46:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855380091] [2024-12-02 08:46:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:46:04,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:46:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:04,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:46:04,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:46:04,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:46:04,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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) [2024-12-02 08:46:04,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:46:04,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:46:04,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:46:14,664 INFO L124 PetriNetUnfolderBase]: 135041/166671 cut-off events. [2024-12-02 08:46:14,668 INFO L125 PetriNetUnfolderBase]: For 14703/14703 co-relation queries the response was YES. [2024-12-02 08:46:14,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349618 conditions, 166671 events. 135041/166671 cut-off events. For 14703/14703 co-relation queries the response was YES. Maximal size of possible extension queue 4266. Compared 841929 event pairs, 115423 based on Foata normal form. 0/146869 useless extension candidates. Maximal degree in co-relation 348585. Up to 166532 conditions per place. [2024-12-02 08:46:15,472 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 58 selfloop transitions, 0 changer transitions 0/63 dead transitions. [2024-12-02 08:46:15,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 290 flow [2024-12-02 08:46:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:46:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:46:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2024-12-02 08:46:15,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-12-02 08:46:15,489 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 182 flow. Second operand 2 states and 84 transitions. [2024-12-02 08:46:15,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 290 flow [2024-12-02 08:46:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 258 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-12-02 08:46:15,879 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 142 flow [2024-12-02 08:46:15,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-12-02 08:46:15,885 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2024-12-02 08:46:15,885 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 142 flow [2024-12-02 08:46:15,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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) [2024-12-02 08:46:15,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:46:15,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:15,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:46:15,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:46:15,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1622124489, now seen corresponding path program 1 times [2024-12-02 08:46:15,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:15,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480469464] [2024-12-02 08:46:15,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:15,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:46:16,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480469464] [2024-12-02 08:46:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480469464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:46:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:46:16,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:46:16,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272474990] [2024-12-02 08:46:16,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:46:16,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:46:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:16,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:46:16,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:46:16,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:46:16,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-12-02 08:46:16,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:46:16,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:46:16,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:46:27,753 INFO L124 PetriNetUnfolderBase]: 202392/251183 cut-off events. [2024-12-02 08:46:27,753 INFO L125 PetriNetUnfolderBase]: For 5262/5262 co-relation queries the response was YES. [2024-12-02 08:46:28,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508850 conditions, 251183 events. 202392/251183 cut-off events. For 5262/5262 co-relation queries the response was YES. Maximal size of possible extension queue 6499. Compared 1356675 event pairs, 175958 based on Foata normal form. 6024/224876 useless extension candidates. Maximal degree in co-relation 508847. Up to 166532 conditions per place. [2024-12-02 08:46:28,568 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 57 selfloop transitions, 2 changer transitions 46/110 dead transitions. [2024-12-02 08:46:28,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 460 flow [2024-12-02 08:46:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:46:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:46:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-12-02 08:46:28,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-12-02 08:46:28,570 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 142 flow. Second operand 4 states and 152 transitions. [2024-12-02 08:46:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 460 flow [2024-12-02 08:46:28,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:46:28,574 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 160 flow [2024-12-02 08:46:28,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-12-02 08:46:28,575 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2024-12-02 08:46:28,575 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 160 flow [2024-12-02 08:46:28,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-12-02 08:46:28,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:46:28,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:28,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:46:28,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:46:28,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash 683148916, now seen corresponding path program 1 times [2024-12-02 08:46:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:28,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440155945] [2024-12-02 08:46:28,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:46:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440155945] [2024-12-02 08:46:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440155945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:46:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:46:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:46:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782626606] [2024-12-02 08:46:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:46:28,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:46:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:28,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:46:28,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:46:28,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:46:28,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-12-02 08:46:28,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:46:28,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:46:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:46:47,137 INFO L124 PetriNetUnfolderBase]: 312908/385920 cut-off events. [2024-12-02 08:46:47,137 INFO L125 PetriNetUnfolderBase]: For 21179/21179 co-relation queries the response was YES. [2024-12-02 08:46:47,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800493 conditions, 385920 events. 312908/385920 cut-off events. For 21179/21179 co-relation queries the response was YES. Maximal size of possible extension queue 8854. Compared 2126281 event pairs, 70423 based on Foata normal form. 1/337012 useless extension candidates. Maximal degree in co-relation 800487. Up to 149829 conditions per place. [2024-12-02 08:46:48,525 INFO L140 encePairwiseOnDemand]: 79/88 looper letters, 176 selfloop transitions, 10 changer transitions 9/200 dead transitions. [2024-12-02 08:46:48,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 200 transitions, 871 flow [2024-12-02 08:46:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:46:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:46:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-12-02 08:46:48,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2024-12-02 08:46:48,528 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 160 flow. Second operand 6 states and 261 transitions. [2024-12-02 08:46:48,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 200 transitions, 871 flow [2024-12-02 08:46:49,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 200 transitions, 861 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-12-02 08:46:49,192 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 215 flow [2024-12-02 08:46:49,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-12-02 08:46:49,193 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-12-02 08:46:49,193 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 215 flow [2024-12-02 08:46:49,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-12-02 08:46:49,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:46:49,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:49,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:46:49,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:46:49,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1021160390, now seen corresponding path program 2 times [2024-12-02 08:46:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:46:49,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739258176] [2024-12-02 08:46:49,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:46:49,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:46:49,235 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 08:46:49,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:46:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:46:49,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:46:49,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739258176] [2024-12-02 08:46:49,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739258176] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:46:49,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:46:49,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:46:49,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403711203] [2024-12-02 08:46:49,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:46:49,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:46:49,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:46:49,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:46:49,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:46:49,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:46:49,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-12-02 08:46:49,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:46:49,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:46:49,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:47:07,523 INFO L124 PetriNetUnfolderBase]: 312898/385897 cut-off events. [2024-12-02 08:47:07,523 INFO L125 PetriNetUnfolderBase]: For 55239/55239 co-relation queries the response was YES. [2024-12-02 08:47:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856725 conditions, 385897 events. 312898/385897 cut-off events. For 55239/55239 co-relation queries the response was YES. Maximal size of possible extension queue 8854. Compared 2124869 event pairs, 70982 based on Foata normal form. 1/336990 useless extension candidates. Maximal degree in co-relation 856716. Up to 149829 conditions per place. [2024-12-02 08:47:09,412 INFO L140 encePairwiseOnDemand]: 79/88 looper letters, 171 selfloop transitions, 12 changer transitions 9/197 dead transitions. [2024-12-02 08:47:09,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 197 transitions, 922 flow [2024-12-02 08:47:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:47:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 08:47:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-12-02 08:47:09,414 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-12-02 08:47:09,414 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 215 flow. Second operand 6 states and 256 transitions. [2024-12-02 08:47:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 197 transitions, 922 flow [2024-12-02 08:47:10,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 197 transitions, 918 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-12-02 08:47:10,161 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 268 flow [2024-12-02 08:47:10,161 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-12-02 08:47:10,162 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-12-02 08:47:10,162 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 268 flow [2024-12-02 08:47:10,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-12-02 08:47:10,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:47:10,162 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:10,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:47:10,163 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:47:10,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:10,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1156823021, now seen corresponding path program 1 times [2024-12-02 08:47:10,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:10,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782944082] [2024-12-02 08:47:10,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:10,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:10,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782944082] [2024-12-02 08:47:10,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782944082] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:10,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10240496] [2024-12-02 08:47:10,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:10,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:10,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:10,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:47:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:10,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:47:10,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:47:10,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:47:10,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10240496] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:10,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:47:10,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 08:47:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560352978] [2024-12-02 08:47:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:10,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:10,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:10,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:47:10,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:47:10,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-12-02 08:47:10,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:47:10,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:47:10,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:47:31,484 INFO L124 PetriNetUnfolderBase]: 362691/447154 cut-off events. [2024-12-02 08:47:31,484 INFO L125 PetriNetUnfolderBase]: For 68308/68308 co-relation queries the response was YES. [2024-12-02 08:47:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012272 conditions, 447154 events. 362691/447154 cut-off events. For 68308/68308 co-relation queries the response was YES. Maximal size of possible extension queue 10337. Compared 2496688 event pairs, 47851 based on Foata normal form. 289/389079 useless extension candidates. Maximal degree in co-relation 1012260. Up to 294541 conditions per place. [2024-12-02 08:47:33,377 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 156 selfloop transitions, 7 changer transitions 2/170 dead transitions. [2024-12-02 08:47:33,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 858 flow [2024-12-02 08:47:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:47:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:47:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-12-02 08:47:33,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-12-02 08:47:33,379 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 268 flow. Second operand 4 states and 196 transitions. [2024-12-02 08:47:33,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 858 flow [2024-12-02 08:47:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 839 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-12-02 08:47:34,636 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 302 flow [2024-12-02 08:47:34,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-12-02 08:47:34,636 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-12-02 08:47:34,636 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 302 flow [2024-12-02 08:47:34,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-12-02 08:47:34,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:47:34,637 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:34,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:47:34,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:34,837 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-12-02 08:47:34,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 461114992, now seen corresponding path program 1 times [2024-12-02 08:47:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68867559] [2024-12-02 08:47:34,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68867559] [2024-12-02 08:47:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68867559] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082116786] [2024-12-02 08:47:34,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:34,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:34,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:34,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:34,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73aee6d0-ace9-40d0-b2ba-19172fdca200/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:47:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:35,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:47:35,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:47:35,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:47:35,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082116786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:35,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:47:35,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-12-02 08:47:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271401904] [2024-12-02 08:47:35,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:35,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:47:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:35,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:47:35,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:47:35,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 88 [2024-12-02 08:47:35,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-12-02 08:47:35,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:47:35,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 88 [2024-12-02 08:47:35,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand