./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:48:06,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:48:06,716 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:48:06,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:48:06,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:48:06,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:48:06,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:48:06,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:48:06,773 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:48:06,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:48:06,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:48:06,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:48:06,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:48:06,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:48:06,774 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:48:06,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:48:06,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:48:06,776 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:48:06,776 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:48:06,776 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:48:06,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:06,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:06,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:06,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:06,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:48:06,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:06,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:06,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:06,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:06,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:48:06,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:48:06,780 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:48:06,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:48:06,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:48:06,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:48:06,781 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:48:06,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:48:06,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:48:06,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:48:06,781 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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/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 -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2024-11-28 02:48:07,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:48:07,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:48:07,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:48:07,105 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:48:07,105 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:48:07,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-28 02:48:10,045 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/data/051218cf5/ad7e4710b6344209ba43ec732a10f81d/FLAG762303485 [2024-11-28 02:48:10,373 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:48:10,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-28 02:48:10,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/data/051218cf5/ad7e4710b6344209ba43ec732a10f81d/FLAG762303485 [2024-11-28 02:48:10,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/data/051218cf5/ad7e4710b6344209ba43ec732a10f81d [2024-11-28 02:48:10,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:48:10,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:48:10,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:10,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:48:10,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:48:10,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c621949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10, skipping insertion in model container [2024-11-28 02:48:10,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,443 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:48:10,654 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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2642,2655] [2024-11-28 02:48:10,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:10,677 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:48:10,707 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_3e67a453-383b-456d-b4f4-bd9cac3d29a4/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[2642,2655] [2024-11-28 02:48:10,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:10,730 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:48:10,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10 WrapperNode [2024-11-28 02:48:10,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:10,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:10,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:48:10,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:48:10,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,786 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-11-28 02:48:10,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:10,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:48:10,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:48:10,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:48:10,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,830 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-28 02:48:10,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,837 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:48:10,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:48:10,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:48:10,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:48:10,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (1/1) ... [2024-11-28 02:48:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:10,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:48:10,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:48:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:48:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:48:10,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:48:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:48:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:48:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:48:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:48:10,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:48:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:48:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:48:10,928 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:48:11,053 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:48:11,055 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:48:11,405 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:48:11,405 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:48:11,619 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:48:11,619 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:48:11,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:11 BoogieIcfgContainer [2024-11-28 02:48:11,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:48:11,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:48:11,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:48:11,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:48:11,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:48:10" (1/3) ... [2024-11-28 02:48:11,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b843fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:11, skipping insertion in model container [2024-11-28 02:48:11,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:10" (2/3) ... [2024-11-28 02:48:11,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b843fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:11, skipping insertion in model container [2024-11-28 02:48:11,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:11" (3/3) ... [2024-11-28 02:48:11,631 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-11-28 02:48:11,646 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:48:11,648 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-min-max-1.wvr.c that has 4 procedures, 51 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 02:48:11,648 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:48:11,755 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:48:11,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 131 flow [2024-11-28 02:48:11,863 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2024-11-28 02:48:11,867 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:48:11,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 5/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-28 02:48:11,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 131 flow [2024-11-28 02:48:11,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 120 flow [2024-11-28 02:48:11,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:11,912 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;@3a6b499e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:11,912 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:48:11,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:11,947 INFO L124 PetriNetUnfolderBase]: 5/50 cut-off events. [2024-11-28 02:48:11,947 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:48:11,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:11,948 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] [2024-11-28 02:48:11,949 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:11,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -48184790, now seen corresponding path program 1 times [2024-11-28 02:48:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488908368] [2024-11-28 02:48:11,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:11,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488908368] [2024-11-28 02:48:12,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488908368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:12,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:12,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:12,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862944813] [2024-11-28 02:48:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:12,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:12,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:12,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:12,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-28 02:48:12,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:12,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:12,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-28 02:48:12,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:13,150 INFO L124 PetriNetUnfolderBase]: 1122/1687 cut-off events. [2024-11-28 02:48:13,150 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-11-28 02:48:13,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1687 events. 1122/1687 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7959 event pairs, 529 based on Foata normal form. 0/1301 useless extension candidates. Maximal degree in co-relation 3268. Up to 977 conditions per place. [2024-11-28 02:48:13,180 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 47 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-11-28 02:48:13,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 258 flow [2024-11-28 02:48:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-28 02:48:13,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2024-11-28 02:48:13,202 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 120 flow. Second operand 4 states and 131 transitions. [2024-11-28 02:48:13,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 258 flow [2024-11-28 02:48:13,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:48:13,224 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 122 flow [2024-11-28 02:48:13,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-11-28 02:48:13,234 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-28 02:48:13,235 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 122 flow [2024-11-28 02:48:13,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:13,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:13,236 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] [2024-11-28 02:48:13,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:48:13,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:13,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -647084131, now seen corresponding path program 1 times [2024-11-28 02:48:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516925426] [2024-11-28 02:48:13,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516925426] [2024-11-28 02:48:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516925426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:13,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402107747] [2024-11-28 02:48:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:13,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:13,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:13,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:13,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-28 02:48:13,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-28 02:48:13,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:13,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-28 02:48:13,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:14,089 INFO L124 PetriNetUnfolderBase]: 1538/2303 cut-off events. [2024-11-28 02:48:14,089 INFO L125 PetriNetUnfolderBase]: For 162/221 co-relation queries the response was YES. [2024-11-28 02:48:14,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 2303 events. 1538/2303 cut-off events. For 162/221 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10803 event pairs, 777 based on Foata normal form. 59/1994 useless extension candidates. Maximal degree in co-relation 1605. Up to 1347 conditions per place. [2024-11-28 02:48:14,119 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 48 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-11-28 02:48:14,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 265 flow [2024-11-28 02:48:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-28 02:48:14,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-28 02:48:14,121 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 122 flow. Second operand 4 states and 130 transitions. [2024-11-28 02:48:14,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 265 flow [2024-11-28 02:48:14,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:14,126 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 132 flow [2024-11-28 02:48:14,127 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-11-28 02:48:14,127 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-28 02:48:14,127 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 132 flow [2024-11-28 02:48:14,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 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) [2024-11-28 02:48:14,128 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:14,129 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] [2024-11-28 02:48:14,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:48:14,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:14,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 701284497, now seen corresponding path program 1 times [2024-11-28 02:48:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405827868] [2024-11-28 02:48:14,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405827868] [2024-11-28 02:48:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405827868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:14,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:14,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:14,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714131088] [2024-11-28 02:48:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:14,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:14,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:14,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:14,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:14,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2024-11-28 02:48:14,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:14,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:14,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2024-11-28 02:48:14,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:14,884 INFO L124 PetriNetUnfolderBase]: 1407/2117 cut-off events. [2024-11-28 02:48:14,884 INFO L125 PetriNetUnfolderBase]: For 154/236 co-relation queries the response was YES. [2024-11-28 02:48:14,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 2117 events. 1407/2117 cut-off events. For 154/236 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10030 event pairs, 1128 based on Foata normal form. 82/1895 useless extension candidates. Maximal degree in co-relation 1573. Up to 1902 conditions per place. [2024-11-28 02:48:14,902 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 33 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-28 02:48:14,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 206 flow [2024-11-28 02:48:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-28 02:48:14,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5409090909090909 [2024-11-28 02:48:14,906 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 132 flow. Second operand 4 states and 119 transitions. [2024-11-28 02:48:14,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 206 flow [2024-11-28 02:48:14,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:14,909 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 142 flow [2024-11-28 02:48:14,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-28 02:48:14,913 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-28 02:48:14,913 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 142 flow [2024-11-28 02:48:14,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:14,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:14,914 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] [2024-11-28 02:48:14,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:48:14,914 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:14,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1727850977, now seen corresponding path program 1 times [2024-11-28 02:48:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640829430] [2024-11-28 02:48:14,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640829430] [2024-11-28 02:48:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640829430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:48:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446555822] [2024-11-28 02:48:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:15,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:48:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:15,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:48:15,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:15,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 55 [2024-11-28 02:48:15,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:15,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:15,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 55 [2024-11-28 02:48:15,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:17,806 INFO L124 PetriNetUnfolderBase]: 8081/11550 cut-off events. [2024-11-28 02:48:17,806 INFO L125 PetriNetUnfolderBase]: For 1282/1603 co-relation queries the response was YES. [2024-11-28 02:48:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25493 conditions, 11550 events. 8081/11550 cut-off events. For 1282/1603 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 60274 event pairs, 1170 based on Foata normal form. 324/10826 useless extension candidates. Maximal degree in co-relation 25456. Up to 2511 conditions per place. [2024-11-28 02:48:17,854 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 128 selfloop transitions, 18 changer transitions 116/267 dead transitions. [2024-11-28 02:48:17,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 267 transitions, 1212 flow [2024-11-28 02:48:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:48:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-28 02:48:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 374 transitions. [2024-11-28 02:48:17,860 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-28 02:48:17,861 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 142 flow. Second operand 16 states and 374 transitions. [2024-11-28 02:48:17,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 267 transitions, 1212 flow [2024-11-28 02:48:17,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 267 transitions, 1206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:17,869 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 247 flow [2024-11-28 02:48:17,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=247, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-28 02:48:17,870 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2024-11-28 02:48:17,871 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 247 flow [2024-11-28 02:48:17,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:17,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:17,872 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, 1] [2024-11-28 02:48:17,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:48:17,873 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:17,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -906230141, now seen corresponding path program 1 times [2024-11-28 02:48:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114663889] [2024-11-28 02:48:17,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:18,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:18,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114663889] [2024-11-28 02:48:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114663889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:18,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:48:18,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035543203] [2024-11-28 02:48:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:18,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:48:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:18,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:48:18,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:18,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-28 02:48:18,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:18,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:18,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-28 02:48:18,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:20,525 INFO L124 PetriNetUnfolderBase]: 7595/10997 cut-off events. [2024-11-28 02:48:20,525 INFO L125 PetriNetUnfolderBase]: For 10696/10831 co-relation queries the response was YES. [2024-11-28 02:48:20,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30269 conditions, 10997 events. 7595/10997 cut-off events. For 10696/10831 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58486 event pairs, 1062 based on Foata normal form. 135/10068 useless extension candidates. Maximal degree in co-relation 30237. Up to 3289 conditions per place. [2024-11-28 02:48:20,597 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 176 selfloop transitions, 36 changer transitions 62/282 dead transitions. [2024-11-28 02:48:20,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 282 transitions, 1492 flow [2024-11-28 02:48:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:48:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-28 02:48:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 452 transitions. [2024-11-28 02:48:20,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-11-28 02:48:20,601 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 247 flow. Second operand 18 states and 452 transitions. [2024-11-28 02:48:20,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 282 transitions, 1492 flow [2024-11-28 02:48:20,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 282 transitions, 1458 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 02:48:20,771 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 447 flow [2024-11-28 02:48:20,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2024-11-28 02:48:20,772 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-11-28 02:48:20,772 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 447 flow [2024-11-28 02:48:20,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:20,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:20,774 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, 1] [2024-11-28 02:48:20,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:48:20,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:20,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 586562335, now seen corresponding path program 1 times [2024-11-28 02:48:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529449749] [2024-11-28 02:48:20,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:21,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529449749] [2024-11-28 02:48:21,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529449749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:21,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:21,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:48:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69068869] [2024-11-28 02:48:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:21,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:48:21,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:21,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:48:21,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:21,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-28 02:48:21,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 447 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:21,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:21,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-28 02:48:21,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:23,921 INFO L124 PetriNetUnfolderBase]: 11116/16091 cut-off events. [2024-11-28 02:48:23,922 INFO L125 PetriNetUnfolderBase]: For 26008/26230 co-relation queries the response was YES. [2024-11-28 02:48:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51059 conditions, 16091 events. 11116/16091 cut-off events. For 26008/26230 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 90100 event pairs, 1612 based on Foata normal form. 226/15507 useless extension candidates. Maximal degree in co-relation 51019. Up to 3991 conditions per place. [2024-11-28 02:48:24,011 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 238 selfloop transitions, 69 changer transitions 77/388 dead transitions. [2024-11-28 02:48:24,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 388 transitions, 2530 flow [2024-11-28 02:48:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:48:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:48:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 454 transitions. [2024-11-28 02:48:24,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4127272727272727 [2024-11-28 02:48:24,015 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 447 flow. Second operand 20 states and 454 transitions. [2024-11-28 02:48:24,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 388 transitions, 2530 flow [2024-11-28 02:48:24,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 388 transitions, 2426 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-11-28 02:48:24,156 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 927 flow [2024-11-28 02:48:24,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=927, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2024-11-28 02:48:24,157 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-11-28 02:48:24,157 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 927 flow [2024-11-28 02:48:24,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:24,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:24,158 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, 1] [2024-11-28 02:48:24,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:48:24,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:24,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1353861879, now seen corresponding path program 2 times [2024-11-28 02:48:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135157537] [2024-11-28 02:48:24,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:24,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:48:24,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135157537] [2024-11-28 02:48:24,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135157537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:24,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:48:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722984430] [2024-11-28 02:48:24,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:24,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:48:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:24,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:48:24,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:24,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-28 02:48:24,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 927 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:24,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:24,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-28 02:48:24,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:27,883 INFO L124 PetriNetUnfolderBase]: 13051/18958 cut-off events. [2024-11-28 02:48:27,883 INFO L125 PetriNetUnfolderBase]: For 51647/51866 co-relation queries the response was YES. [2024-11-28 02:48:27,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70114 conditions, 18958 events. 13051/18958 cut-off events. For 51647/51866 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 110754 event pairs, 1856 based on Foata normal form. 219/18357 useless extension candidates. Maximal degree in co-relation 70052. Up to 3998 conditions per place. [2024-11-28 02:48:27,988 INFO L140 encePairwiseOnDemand]: 39/55 looper letters, 227 selfloop transitions, 90 changer transitions 83/404 dead transitions. [2024-11-28 02:48:27,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 404 transitions, 3078 flow [2024-11-28 02:48:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:48:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:48:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 449 transitions. [2024-11-28 02:48:27,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4081818181818182 [2024-11-28 02:48:27,991 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 927 flow. Second operand 20 states and 449 transitions. [2024-11-28 02:48:27,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 404 transitions, 3078 flow [2024-11-28 02:48:28,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 404 transitions, 3004 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-28 02:48:28,311 INFO L231 Difference]: Finished difference. Result has 132 places, 163 transitions, 1343 flow [2024-11-28 02:48:28,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1343, PETRI_PLACES=132, PETRI_TRANSITIONS=163} [2024-11-28 02:48:28,313 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-11-28 02:48:28,313 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 163 transitions, 1343 flow [2024-11-28 02:48:28,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:28,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:28,315 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, 1] [2024-11-28 02:48:28,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:48:28,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:28,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1234832053, now seen corresponding path program 3 times [2024-11-28 02:48:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766097108] [2024-11-28 02:48:28,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:28,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:28,359 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:48:28,359 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766097108] [2024-11-28 02:48:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766097108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:28,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:48:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153299951] [2024-11-28 02:48:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:28,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:48:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:28,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:48:28,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:28,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:48:28,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 163 transitions, 1343 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:28,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:28,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:48:28,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:29,598 INFO L124 PetriNetUnfolderBase]: 5455/8244 cut-off events. [2024-11-28 02:48:29,598 INFO L125 PetriNetUnfolderBase]: For 18690/19093 co-relation queries the response was YES. [2024-11-28 02:48:29,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30946 conditions, 8244 events. 5455/8244 cut-off events. For 18690/19093 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 46454 event pairs, 957 based on Foata normal form. 392/8182 useless extension candidates. Maximal degree in co-relation 30899. Up to 3683 conditions per place. [2024-11-28 02:48:29,646 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 150 selfloop transitions, 38 changer transitions 0/238 dead transitions. [2024-11-28 02:48:29,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 238 transitions, 2108 flow [2024-11-28 02:48:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:48:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:48:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-11-28 02:48:29,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5022727272727273 [2024-11-28 02:48:29,650 INFO L175 Difference]: Start difference. First operand has 132 places, 163 transitions, 1343 flow. Second operand 8 states and 221 transitions. [2024-11-28 02:48:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 238 transitions, 2108 flow [2024-11-28 02:48:29,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 238 transitions, 2001 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-11-28 02:48:29,760 INFO L231 Difference]: Finished difference. Result has 127 places, 162 transitions, 1341 flow [2024-11-28 02:48:29,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1341, PETRI_PLACES=127, PETRI_TRANSITIONS=162} [2024-11-28 02:48:29,763 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-11-28 02:48:29,763 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 162 transitions, 1341 flow [2024-11-28 02:48:29,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:29,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:29,764 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, 1] [2024-11-28 02:48:29,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:48:29,764 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash -327153641, now seen corresponding path program 2 times [2024-11-28 02:48:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674538196] [2024-11-28 02:48:29,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:29,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:29,799 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:48:29,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:30,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:30,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674538196] [2024-11-28 02:48:30,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674538196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:30,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:30,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:48:30,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679130211] [2024-11-28 02:48:30,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:30,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:48:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:30,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:48:30,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:48:30,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-28 02:48:30,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 162 transitions, 1341 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:30,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:30,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-28 02:48:30,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:32,851 INFO L124 PetriNetUnfolderBase]: 10192/14983 cut-off events. [2024-11-28 02:48:32,851 INFO L125 PetriNetUnfolderBase]: For 62302/62463 co-relation queries the response was YES. [2024-11-28 02:48:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63511 conditions, 14983 events. 10192/14983 cut-off events. For 62302/62463 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 83840 event pairs, 2714 based on Foata normal form. 164/14671 useless extension candidates. Maximal degree in co-relation 63431. Up to 9502 conditions per place. [2024-11-28 02:48:32,963 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 253 selfloop transitions, 70 changer transitions 70/397 dead transitions. [2024-11-28 02:48:32,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 397 transitions, 3525 flow [2024-11-28 02:48:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:48:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-28 02:48:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 417 transitions. [2024-11-28 02:48:32,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3159090909090909 [2024-11-28 02:48:32,966 INFO L175 Difference]: Start difference. First operand has 127 places, 162 transitions, 1341 flow. Second operand 24 states and 417 transitions. [2024-11-28 02:48:32,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 397 transitions, 3525 flow [2024-11-28 02:48:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 397 transitions, 3349 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-28 02:48:33,145 INFO L231 Difference]: Finished difference. Result has 151 places, 215 transitions, 1943 flow [2024-11-28 02:48:33,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1943, PETRI_PLACES=151, PETRI_TRANSITIONS=215} [2024-11-28 02:48:33,147 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-11-28 02:48:33,147 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 215 transitions, 1943 flow [2024-11-28 02:48:33,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:33,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:33,147 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, 1] [2024-11-28 02:48:33,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:48:33,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:33,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:33,148 INFO L85 PathProgramCache]: Analyzing trace with hash 72822697, now seen corresponding path program 3 times [2024-11-28 02:48:33,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:33,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43541395] [2024-11-28 02:48:33,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:33,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:33,174 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:48:33,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:48:33,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:33,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43541395] [2024-11-28 02:48:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43541395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:48:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654997662] [2024-11-28 02:48:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:33,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:48:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:33,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:48:33,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:33,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-11-28 02:48:33,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 215 transitions, 1943 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:33,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:33,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-11-28 02:48:33,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:35,915 INFO L124 PetriNetUnfolderBase]: 10675/15921 cut-off events. [2024-11-28 02:48:35,916 INFO L125 PetriNetUnfolderBase]: For 78413/78649 co-relation queries the response was YES. [2024-11-28 02:48:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68983 conditions, 15921 events. 10675/15921 cut-off events. For 78413/78649 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 93222 event pairs, 2340 based on Foata normal form. 187/15461 useless extension candidates. Maximal degree in co-relation 68933. Up to 4785 conditions per place. [2024-11-28 02:48:36,020 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 199 selfloop transitions, 114 changer transitions 60/389 dead transitions. [2024-11-28 02:48:36,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 389 transitions, 3732 flow [2024-11-28 02:48:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:48:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-28 02:48:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 404 transitions. [2024-11-28 02:48:36,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4320855614973262 [2024-11-28 02:48:36,022 INFO L175 Difference]: Start difference. First operand has 151 places, 215 transitions, 1943 flow. Second operand 17 states and 404 transitions. [2024-11-28 02:48:36,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 389 transitions, 3732 flow [2024-11-28 02:48:36,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 389 transitions, 3670 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-11-28 02:48:36,242 INFO L231 Difference]: Finished difference. Result has 166 places, 230 transitions, 2379 flow [2024-11-28 02:48:36,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2379, PETRI_PLACES=166, PETRI_TRANSITIONS=230} [2024-11-28 02:48:36,243 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 110 predicate places. [2024-11-28 02:48:36,243 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 230 transitions, 2379 flow [2024-11-28 02:48:36,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:36,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:36,243 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, 1] [2024-11-28 02:48:36,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:48:36,243 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:36,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1448554679, now seen corresponding path program 4 times [2024-11-28 02:48:36,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:36,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805567453] [2024-11-28 02:48:36,248 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:48:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:36,262 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:48:36,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805567453] [2024-11-28 02:48:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805567453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666453909] [2024-11-28 02:48:36,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:48:36,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:36,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:36,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:36,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:48:36,486 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:48:36,486 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:36,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:48:36,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:36,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:48:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:48:36,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666453909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2024-11-28 02:48:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998162772] [2024-11-28 02:48:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:36,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:36,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:36,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:36,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 55 [2024-11-28 02:48:36,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 230 transitions, 2379 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:36,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:36,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 55 [2024-11-28 02:48:36,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:38,085 INFO L124 PetriNetUnfolderBase]: 4707/7402 cut-off events. [2024-11-28 02:48:38,086 INFO L125 PetriNetUnfolderBase]: For 29707/30207 co-relation queries the response was YES. [2024-11-28 02:48:38,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32112 conditions, 7402 events. 4707/7402 cut-off events. For 29707/30207 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 43861 event pairs, 752 based on Foata normal form. 282/7448 useless extension candidates. Maximal degree in co-relation 32062. Up to 3089 conditions per place. [2024-11-28 02:48:38,165 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 132 selfloop transitions, 66 changer transitions 0/265 dead transitions. [2024-11-28 02:48:38,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 265 transitions, 2841 flow [2024-11-28 02:48:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:48:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-11-28 02:48:38,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5787878787878787 [2024-11-28 02:48:38,166 INFO L175 Difference]: Start difference. First operand has 166 places, 230 transitions, 2379 flow. Second operand 6 states and 191 transitions. [2024-11-28 02:48:38,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 265 transitions, 2841 flow [2024-11-28 02:48:38,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 265 transitions, 2677 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-11-28 02:48:38,281 INFO L231 Difference]: Finished difference. Result has 156 places, 209 transitions, 2165 flow [2024-11-28 02:48:38,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2165, PETRI_PLACES=156, PETRI_TRANSITIONS=209} [2024-11-28 02:48:38,283 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-11-28 02:48:38,283 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 209 transitions, 2165 flow [2024-11-28 02:48:38,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:38,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:38,283 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, 1, 1] [2024-11-28 02:48:38,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:48:38,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:48:38,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:38,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash -836303171, now seen corresponding path program 1 times [2024-11-28 02:48:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24497204] [2024-11-28 02:48:38,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:38,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:38,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24497204] [2024-11-28 02:48:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24497204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:48:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223823817] [2024-11-28 02:48:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:38,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:48:38,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:38,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:48:38,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:39,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2024-11-28 02:48:39,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 209 transitions, 2165 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:39,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:39,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2024-11-28 02:48:39,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:42,719 INFO L124 PetriNetUnfolderBase]: 10369/15274 cut-off events. [2024-11-28 02:48:42,719 INFO L125 PetriNetUnfolderBase]: For 95836/95847 co-relation queries the response was YES. [2024-11-28 02:48:42,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68593 conditions, 15274 events. 10369/15274 cut-off events. For 95836/95847 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 84305 event pairs, 1730 based on Foata normal form. 10/15284 useless extension candidates. Maximal degree in co-relation 68501. Up to 4826 conditions per place. [2024-11-28 02:48:42,828 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 347 selfloop transitions, 171 changer transitions 179/700 dead transitions. [2024-11-28 02:48:42,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 700 transitions, 6577 flow [2024-11-28 02:48:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 02:48:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-28 02:48:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 824 transitions. [2024-11-28 02:48:42,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29963636363636365 [2024-11-28 02:48:42,831 INFO L175 Difference]: Start difference. First operand has 156 places, 209 transitions, 2165 flow. Second operand 50 states and 824 transitions. [2024-11-28 02:48:42,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 700 transitions, 6577 flow [2024-11-28 02:48:43,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 700 transitions, 6426 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:48:43,123 INFO L231 Difference]: Finished difference. Result has 228 places, 280 transitions, 3383 flow [2024-11-28 02:48:43,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3383, PETRI_PLACES=228, PETRI_TRANSITIONS=280} [2024-11-28 02:48:43,124 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 172 predicate places. [2024-11-28 02:48:43,124 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 280 transitions, 3383 flow [2024-11-28 02:48:43,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:43,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:43,125 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, 1, 1] [2024-11-28 02:48:43,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:48:43,125 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:43,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash -865643, now seen corresponding path program 2 times [2024-11-28 02:48:43,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:43,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849977999] [2024-11-28 02:48:43,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:43,151 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:48:43,155 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849977999] [2024-11-28 02:48:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849977999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:48:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893370815] [2024-11-28 02:48:43,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:43,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:48:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:43,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:48:43,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:43,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-28 02:48:43,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 280 transitions, 3383 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:43,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:43,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-28 02:48:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:47,125 INFO L124 PetriNetUnfolderBase]: 11367/16835 cut-off events. [2024-11-28 02:48:47,125 INFO L125 PetriNetUnfolderBase]: For 244481/244527 co-relation queries the response was YES. [2024-11-28 02:48:47,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90316 conditions, 16835 events. 11367/16835 cut-off events. For 244481/244527 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 96834 event pairs, 1002 based on Foata normal form. 23/16796 useless extension candidates. Maximal degree in co-relation 90230. Up to 4757 conditions per place. [2024-11-28 02:48:47,301 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 305 selfloop transitions, 245 changer transitions 190/755 dead transitions. [2024-11-28 02:48:47,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 755 transitions, 8688 flow [2024-11-28 02:48:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 02:48:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-28 02:48:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 871 transitions. [2024-11-28 02:48:47,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35991735537190084 [2024-11-28 02:48:47,305 INFO L175 Difference]: Start difference. First operand has 228 places, 280 transitions, 3383 flow. Second operand 44 states and 871 transitions. [2024-11-28 02:48:47,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 755 transitions, 8688 flow [2024-11-28 02:48:48,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 755 transitions, 8020 flow, removed 254 selfloop flow, removed 21 redundant places. [2024-11-28 02:48:48,251 INFO L231 Difference]: Finished difference. Result has 250 places, 372 transitions, 4867 flow [2024-11-28 02:48:48,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4867, PETRI_PLACES=250, PETRI_TRANSITIONS=372} [2024-11-28 02:48:48,252 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-11-28 02:48:48,252 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 372 transitions, 4867 flow [2024-11-28 02:48:48,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:48,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:48,252 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, 1, 1] [2024-11-28 02:48:48,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:48:48,252 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:48,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash -206167411, now seen corresponding path program 3 times [2024-11-28 02:48:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326227403] [2024-11-28 02:48:48,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:48,275 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:48:48,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:48,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326227403] [2024-11-28 02:48:48,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326227403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181981529] [2024-11-28 02:48:48,590 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:48:48,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:48,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:48,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:48,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:48:48,699 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:48:48,699 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:48,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:48:48,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:49,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:48:49,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-28 02:48:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:48:49,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:49,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181981529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:49,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2024-11-28 02:48:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854037713] [2024-11-28 02:48:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:49,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:48:49,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:49,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:48:49,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:48:49,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-28 02:48:49,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 372 transitions, 4867 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:49,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:49,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-28 02:48:49,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:52,115 INFO L124 PetriNetUnfolderBase]: 10222/15363 cut-off events. [2024-11-28 02:48:52,115 INFO L125 PetriNetUnfolderBase]: For 250261/250299 co-relation queries the response was YES. [2024-11-28 02:48:52,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85593 conditions, 15363 events. 10222/15363 cut-off events. For 250261/250299 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 89119 event pairs, 1517 based on Foata normal form. 17/15270 useless extension candidates. Maximal degree in co-relation 85500. Up to 7516 conditions per place. [2024-11-28 02:48:52,287 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 325 selfloop transitions, 195 changer transitions 50/585 dead transitions. [2024-11-28 02:48:52,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 585 transitions, 7741 flow [2024-11-28 02:48:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:48:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-28 02:48:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 447 transitions. [2024-11-28 02:48:52,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40636363636363637 [2024-11-28 02:48:52,289 INFO L175 Difference]: Start difference. First operand has 250 places, 372 transitions, 4867 flow. Second operand 20 states and 447 transitions. [2024-11-28 02:48:52,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 585 transitions, 7741 flow [2024-11-28 02:48:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 585 transitions, 7153 flow, removed 149 selfloop flow, removed 22 redundant places. [2024-11-28 02:48:53,652 INFO L231 Difference]: Finished difference. Result has 246 places, 417 transitions, 5662 flow [2024-11-28 02:48:53,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=4406, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5662, PETRI_PLACES=246, PETRI_TRANSITIONS=417} [2024-11-28 02:48:53,653 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 190 predicate places. [2024-11-28 02:48:53,653 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 417 transitions, 5662 flow [2024-11-28 02:48:53,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:53,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:53,654 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, 1, 1] [2024-11-28 02:48:53,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:53,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:48:53,858 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:48:53,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:53,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1667388927, now seen corresponding path program 4 times [2024-11-28 02:48:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:53,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426230891] [2024-11-28 02:48:53,860 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:48:53,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:53,878 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:48:53,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426230891] [2024-11-28 02:48:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426230891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510653397] [2024-11-28 02:48:54,198 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:48:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:54,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:54,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:48:54,297 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:48:54,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:54,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:48:54,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:54,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:48:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:54,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:54,634 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 02:48:54,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 02:48:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:48:54,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510653397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:54,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:54,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 22 [2024-11-28 02:48:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34654173] [2024-11-28 02:48:54,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:54,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:48:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:54,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:48:54,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:48:54,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 55 [2024-11-28 02:48:54,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 417 transitions, 5662 flow. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 22 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:48:54,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:54,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 55 [2024-11-28 02:48:54,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:01,576 INFO L124 PetriNetUnfolderBase]: 14847/22067 cut-off events. [2024-11-28 02:49:01,576 INFO L125 PetriNetUnfolderBase]: For 403850/403859 co-relation queries the response was YES. [2024-11-28 02:49:01,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121754 conditions, 22067 events. 14847/22067 cut-off events. For 403850/403859 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 130480 event pairs, 1024 based on Foata normal form. 10/21969 useless extension candidates. Maximal degree in co-relation 121666. Up to 4362 conditions per place. [2024-11-28 02:49:01,776 INFO L140 encePairwiseOnDemand]: 34/55 looper letters, 571 selfloop transitions, 512 changer transitions 193/1279 dead transitions. [2024-11-28 02:49:01,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1279 transitions, 15547 flow [2024-11-28 02:49:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-28 02:49:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2024-11-28 02:49:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 1289 transitions. [2024-11-28 02:49:01,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2633299284984678 [2024-11-28 02:49:01,780 INFO L175 Difference]: Start difference. First operand has 246 places, 417 transitions, 5662 flow. Second operand 89 states and 1289 transitions. [2024-11-28 02:49:01,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1279 transitions, 15547 flow [2024-11-28 02:49:03,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1279 transitions, 15334 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-11-28 02:49:03,799 INFO L231 Difference]: Finished difference. Result has 359 places, 669 transitions, 10361 flow [2024-11-28 02:49:03,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=10361, PETRI_PLACES=359, PETRI_TRANSITIONS=669} [2024-11-28 02:49:03,800 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 303 predicate places. [2024-11-28 02:49:03,800 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 669 transitions, 10361 flow [2024-11-28 02:49:03,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 22 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:03,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:03,800 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, 1, 1] [2024-11-28 02:49:03,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:49:04,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:49:04,001 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:49:04,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash 947017881, now seen corresponding path program 5 times [2024-11-28 02:49:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701086240] [2024-11-28 02:49:04,002 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:49:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:04,149 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:49:04,149 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701086240] [2024-11-28 02:49:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701086240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310443707] [2024-11-28 02:49:04,394 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:49:04,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:04,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:04,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:49:04,495 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:49:04,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:04,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:49:04,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:04,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:49:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:04,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310443707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:04,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2024-11-28 02:49:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307057448] [2024-11-28 02:49:04,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:04,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:49:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:04,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:49:04,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:49:04,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-28 02:49:04,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 669 transitions, 10361 flow. Second operand has 16 states, 16 states have (on average 12.0625) internal successors, (193), 16 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:04,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:04,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-28 02:49:04,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:10,564 INFO L124 PetriNetUnfolderBase]: 13180/20016 cut-off events. [2024-11-28 02:49:10,565 INFO L125 PetriNetUnfolderBase]: For 418947/419250 co-relation queries the response was YES. [2024-11-28 02:49:10,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130943 conditions, 20016 events. 13180/20016 cut-off events. For 418947/419250 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 123011 event pairs, 1852 based on Foata normal form. 300/20266 useless extension candidates. Maximal degree in co-relation 130822. Up to 11047 conditions per place. [2024-11-28 02:49:10,797 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 629 selfloop transitions, 217 changer transitions 84/939 dead transitions. [2024-11-28 02:49:10,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 939 transitions, 15341 flow [2024-11-28 02:49:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:49:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-28 02:49:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 449 transitions. [2024-11-28 02:49:10,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.313986013986014 [2024-11-28 02:49:10,799 INFO L175 Difference]: Start difference. First operand has 359 places, 669 transitions, 10361 flow. Second operand 26 states and 449 transitions. [2024-11-28 02:49:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 939 transitions, 15341 flow [2024-11-28 02:49:13,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 939 transitions, 14198 flow, removed 304 selfloop flow, removed 31 redundant places. [2024-11-28 02:49:13,733 INFO L231 Difference]: Finished difference. Result has 353 places, 714 transitions, 10664 flow [2024-11-28 02:49:13,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=9438, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=10664, PETRI_PLACES=353, PETRI_TRANSITIONS=714} [2024-11-28 02:49:13,734 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 297 predicate places. [2024-11-28 02:49:13,734 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 714 transitions, 10664 flow [2024-11-28 02:49:13,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0625) internal successors, (193), 16 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:13,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:13,734 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, 1, 1] [2024-11-28 02:49:13,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:49:13,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:49:13,935 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:49:13,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1589199505, now seen corresponding path program 6 times [2024-11-28 02:49:13,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:13,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368687757] [2024-11-28 02:49:13,936 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:49:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:13,954 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 02:49:13,954 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:14,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368687757] [2024-11-28 02:49:14,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368687757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:14,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:14,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:49:14,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706772224] [2024-11-28 02:49:14,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:14,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:49:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:14,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:49:14,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:49:14,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-28 02:49:14,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 714 transitions, 10664 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:14,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-28 02:49:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:19,934 INFO L124 PetriNetUnfolderBase]: 13550/20499 cut-off events. [2024-11-28 02:49:19,934 INFO L125 PetriNetUnfolderBase]: For 467372/467473 co-relation queries the response was YES. [2024-11-28 02:49:20,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131965 conditions, 20499 events. 13550/20499 cut-off events. For 467372/467473 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 125634 event pairs, 1679 based on Foata normal form. 17/20407 useless extension candidates. Maximal degree in co-relation 131844. Up to 11793 conditions per place. [2024-11-28 02:49:20,175 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 624 selfloop transitions, 248 changer transitions 68/955 dead transitions. [2024-11-28 02:49:20,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 955 transitions, 14807 flow [2024-11-28 02:49:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:49:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-28 02:49:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 489 transitions. [2024-11-28 02:49:20,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3865612648221344 [2024-11-28 02:49:20,177 INFO L175 Difference]: Start difference. First operand has 353 places, 714 transitions, 10664 flow. Second operand 23 states and 489 transitions. [2024-11-28 02:49:20,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 955 transitions, 14807 flow [2024-11-28 02:49:23,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 955 transitions, 14361 flow, removed 89 selfloop flow, removed 15 redundant places. [2024-11-28 02:49:23,173 INFO L231 Difference]: Finished difference. Result has 360 places, 737 transitions, 11166 flow [2024-11-28 02:49:23,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=10292, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11166, PETRI_PLACES=360, PETRI_TRANSITIONS=737} [2024-11-28 02:49:23,174 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 304 predicate places. [2024-11-28 02:49:23,174 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 737 transitions, 11166 flow [2024-11-28 02:49:23,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:23,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:23,175 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, 1, 1] [2024-11-28 02:49:23,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:49:23,175 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:49:23,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1172516145, now seen corresponding path program 7 times [2024-11-28 02:49:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763290264] [2024-11-28 02:49:23,176 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:49:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763290264] [2024-11-28 02:49:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763290264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544904951] [2024-11-28 02:49:23,492 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:49:23,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:23,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:23,494 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:23,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:49:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:23,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:49:23,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:23,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:49:23,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:49:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:49:23,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:24,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544904951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:24,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:24,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 20 [2024-11-28 02:49:24,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856328652] [2024-11-28 02:49:24,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:24,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:49:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:24,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:49:24,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:49:24,127 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 55 [2024-11-28 02:49:24,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 737 transitions, 11166 flow. Second operand has 20 states, 20 states have (on average 11.95) internal successors, (239), 20 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:24,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:24,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 55 [2024-11-28 02:49:24,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:31,145 INFO L124 PetriNetUnfolderBase]: 15471/23311 cut-off events. [2024-11-28 02:49:31,145 INFO L125 PetriNetUnfolderBase]: For 550294/550719 co-relation queries the response was YES. [2024-11-28 02:49:31,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152680 conditions, 23311 events. 15471/23311 cut-off events. For 550294/550719 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 143343 event pairs, 1409 based on Foata normal form. 423/23682 useless extension candidates. Maximal degree in co-relation 152552. Up to 5229 conditions per place. [2024-11-28 02:49:31,410 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 557 selfloop transitions, 424 changer transitions 116/1106 dead transitions. [2024-11-28 02:49:31,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1106 transitions, 17347 flow [2024-11-28 02:49:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 02:49:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-28 02:49:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 676 transitions. [2024-11-28 02:49:31,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30727272727272725 [2024-11-28 02:49:31,413 INFO L175 Difference]: Start difference. First operand has 360 places, 737 transitions, 11166 flow. Second operand 40 states and 676 transitions. [2024-11-28 02:49:31,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1106 transitions, 17347 flow [2024-11-28 02:49:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1106 transitions, 16821 flow, removed 80 selfloop flow, removed 17 redundant places. [2024-11-28 02:49:34,867 INFO L231 Difference]: Finished difference. Result has 388 places, 769 transitions, 12398 flow [2024-11-28 02:49:34,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=10724, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=12398, PETRI_PLACES=388, PETRI_TRANSITIONS=769} [2024-11-28 02:49:34,868 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 332 predicate places. [2024-11-28 02:49:34,868 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 769 transitions, 12398 flow [2024-11-28 02:49:34,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.95) internal successors, (239), 20 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:34,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:34,868 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, 1, 1] [2024-11-28 02:49:34,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:49:35,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:49:35,069 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:49:35,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash 199104413, now seen corresponding path program 8 times [2024-11-28 02:49:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83063375] [2024-11-28 02:49:35,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:35,104 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:49:35,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:49:35,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83063375] [2024-11-28 02:49:35,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83063375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:35,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029914276] [2024-11-28 02:49:35,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:49:35,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:35,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:35,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:49:35,579 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:49:35,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:35,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:49:35,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:35,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:49:35,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2024-11-28 02:49:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:35,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029914276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 18 [2024-11-28 02:49:35,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145662666] [2024-11-28 02:49:35,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:35,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:49:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:35,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:49:35,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:49:35,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-28 02:49:35,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 769 transitions, 12398 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:35,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:35,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-28 02:49:35,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:49:44,254 INFO L124 PetriNetUnfolderBase]: 17676/26637 cut-off events. [2024-11-28 02:49:44,254 INFO L125 PetriNetUnfolderBase]: For 788122/788309 co-relation queries the response was YES. [2024-11-28 02:49:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183706 conditions, 26637 events. 17676/26637 cut-off events. For 788122/788309 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 166201 event pairs, 878 based on Foata normal form. 35/26561 useless extension candidates. Maximal degree in co-relation 183571. Up to 9358 conditions per place. [2024-11-28 02:49:44,630 INFO L140 encePairwiseOnDemand]: 38/55 looper letters, 605 selfloop transitions, 559 changer transitions 151/1330 dead transitions. [2024-11-28 02:49:44,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1330 transitions, 22345 flow [2024-11-28 02:49:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 02:49:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-28 02:49:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 978 transitions. [2024-11-28 02:49:44,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34195804195804197 [2024-11-28 02:49:44,632 INFO L175 Difference]: Start difference. First operand has 388 places, 769 transitions, 12398 flow. Second operand 52 states and 978 transitions. [2024-11-28 02:49:44,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1330 transitions, 22345 flow [2024-11-28 02:49:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 1330 transitions, 21377 flow, removed 133 selfloop flow, removed 20 redundant places. [2024-11-28 02:49:49,717 INFO L231 Difference]: Finished difference. Result has 434 places, 944 transitions, 16567 flow [2024-11-28 02:49:49,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=11673, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=16567, PETRI_PLACES=434, PETRI_TRANSITIONS=944} [2024-11-28 02:49:49,718 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, 378 predicate places. [2024-11-28 02:49:49,718 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 944 transitions, 16567 flow [2024-11-28 02:49:49,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:49,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:49:49,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:49,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:49:49,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:49,919 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 02:49:49,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:49,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1960304406, now seen corresponding path program 9 times [2024-11-28 02:49:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809342348] [2024-11-28 02:49:49,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:49:49,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:49,943 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:49:49,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:50,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809342348] [2024-11-28 02:49:50,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809342348] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:50,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612474433] [2024-11-28 02:49:50,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:49:50,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:50,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:50,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:50,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e67a453-383b-456d-b4f4-bd9cac3d29a4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:49:51,058 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:49:51,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:49:51,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:49:51,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:51,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:49:51,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2024-11-28 02:49:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:49:52,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612474433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:52,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:52,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [20] total 36 [2024-11-28 02:49:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594794275] [2024-11-28 02:49:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:52,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:49:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:52,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:49:52,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:49:52,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-11-28 02:49:52,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 944 transitions, 16567 flow. Second operand has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:49:52,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:49:52,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-11-28 02:49:52,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand