./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 05:49:58,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 05:49:59,021 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 05:49:59,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 05:49:59,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 05:49:59,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 05:49:59,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 05:49:59,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 05:49:59,047 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 05:49:59,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 05:49:59,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 05:49:59,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 05:49:59,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 05:49:59,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 05:49:59,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 05:49:59,049 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 05:49:59,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:49:59,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:49:59,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 05:49:59,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 05:49:59,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 05:49:59,051 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_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) 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 -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2024-12-02 05:49:59,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 05:49:59,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 05:49:59,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 05:49:59,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 05:49:59,304 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 05:49:59,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-12-02 05:50:02,036 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/data/bbf58e41b/182cbc3acb494875a4847cb54f73e9ab/FLAG1c6e6ac26 [2024-12-02 05:50:02,298 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 05:50:02,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2024-12-02 05:50:02,315 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/data/bbf58e41b/182cbc3acb494875a4847cb54f73e9ab/FLAG1c6e6ac26 [2024-12-02 05:50:02,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/data/bbf58e41b/182cbc3acb494875a4847cb54f73e9ab [2024-12-02 05:50:02,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 05:50:02,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 05:50:02,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 05:50:02,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 05:50:02,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 05:50:02,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:02" (1/1) ... [2024-12-02 05:50:02,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2405d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:02, skipping insertion in model container [2024-12-02 05:50:02,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:50:02" (1/1) ... [2024-12-02 05:50:02,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 05:50:02,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:50:03,057 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 05:50:03,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 05:50:03,236 INFO L204 MainTranslator]: Completed translation [2024-12-02 05:50:03,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03 WrapperNode [2024-12-02 05:50:03,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 05:50:03,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 05:50:03,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 05:50:03,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 05:50:03,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,359 INFO L138 Inliner]: procedures = 280, calls = 1605, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1791 [2024-12-02 05:50:03,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 05:50:03,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 05:50:03,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 05:50:03,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 05:50:03,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,421 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 1280, 14, 2, 2]. 82 percent of accesses are in the largest equivalence class. The 1548 initializations are split as follows [2, 5, 256, 5, 1280, 0, 0, 0]. The 11 writes are split as follows [0, 0, 1, 0, 0, 8, 1, 1]. [2024-12-02 05:50:03,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,464 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 05:50:03,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 05:50:03,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 05:50:03,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 05:50:03,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (1/1) ... [2024-12-02 05:50:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 05:50:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:03,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 05:50:03,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 05:50:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 05:50:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 05:50:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 05:50:03,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 05:50:03,552 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 05:50:03,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 05:50:03,553 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 05:50:03,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 05:50:03,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 05:50:03,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 05:50:03,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 05:50:03,558 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 05:50:03,727 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 05:50:03,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 05:50:05,541 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 05:50:05,542 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 05:50:37,043 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 05:50:37,043 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-12-02 05:50:37,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:37 BoogieIcfgContainer [2024-12-02 05:50:37,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 05:50:37,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 05:50:37,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 05:50:37,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 05:50:37,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:50:02" (1/3) ... [2024-12-02 05:50:37,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506cfdc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:37, skipping insertion in model container [2024-12-02 05:50:37,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:50:03" (2/3) ... [2024-12-02 05:50:37,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506cfdc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:50:37, skipping insertion in model container [2024-12-02 05:50:37,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:50:37" (3/3) ... [2024-12-02 05:50:37,052 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2024-12-02 05:50:37,065 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 05:50:37,066 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_87-lists_racefree.i that has 3 procedures, 81 locations, 1 initial locations, 11 loop locations, and 14 error locations. [2024-12-02 05:50:37,066 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 05:50:37,174 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 05:50:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2024-12-02 05:50:37,321 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2024-12-02 05:50:37,324 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 05:50:37,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 203 events. 35/203 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 836 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2024-12-02 05:50:37,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2024-12-02 05:50:37,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2024-12-02 05:50:37,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 05:50:37,349 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;@37f7ed80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 05:50:37,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-12-02 05:50:37,407 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 05:50:37,407 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 05:50:37,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 05:50:37,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:37,408 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 05:50:37,408 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:37,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash 3771008, now seen corresponding path program 1 times [2024-12-02 05:50:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69716894] [2024-12-02 05:50:37,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:37,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69716894] [2024-12-02 05:50:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69716894] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:50:38,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:50:38,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 05:50:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61808242] [2024-12-02 05:50:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:50:38,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 05:50:38,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:38,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 05:50:38,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 05:50:38,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:38,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:38,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:38,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:38,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:39,258 INFO L124 PetriNetUnfolderBase]: 2462/5038 cut-off events. [2024-12-02 05:50:39,258 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-12-02 05:50:39,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9067 conditions, 5038 events. 2462/5038 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33641 event pairs, 2279 based on Foata normal form. 349/4545 useless extension candidates. Maximal degree in co-relation 7642. Up to 3942 conditions per place. [2024-12-02 05:50:39,284 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 53 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-12-02 05:50:39,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 314 flow [2024-12-02 05:50:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 05:50:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 05:50:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-12-02 05:50:39,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-12-02 05:50:39,296 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 210 transitions. [2024-12-02 05:50:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 314 flow [2024-12-02 05:50:39,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 05:50:39,305 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2024-12-02 05:50:39,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-12-02 05:50:39,310 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-12-02 05:50:39,310 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2024-12-02 05:50:39,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:39,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:39,310 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 05:50:39,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 05:50:39,310 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:39,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 676702381, now seen corresponding path program 1 times [2024-12-02 05:50:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116430292] [2024-12-02 05:50:39,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:39,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116430292] [2024-12-02 05:50:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116430292] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:39,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521013132] [2024-12-02 05:50:39,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:39,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:39,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 05:50:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:40,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 05:50:40,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:40,671 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 05:50:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521013132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:50:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 05:50:40,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 05:50:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380685334] [2024-12-02 05:50:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:50:40,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 05:50:40,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:40,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 05:50:40,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 05:50:40,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:40,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:40,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:40,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:41,691 INFO L124 PetriNetUnfolderBase]: 2462/5037 cut-off events. [2024-12-02 05:50:41,692 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-12-02 05:50:41,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9077 conditions, 5037 events. 2462/5037 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33605 event pairs, 2279 based on Foata normal form. 1/4196 useless extension candidates. Maximal degree in co-relation 9058. Up to 3937 conditions per place. [2024-12-02 05:50:41,727 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 49 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-12-02 05:50:41,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 328 flow [2024-12-02 05:50:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 05:50:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 05:50:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-12-02 05:50:41,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-12-02 05:50:41,729 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 6 states and 266 transitions. [2024-12-02 05:50:41,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 328 flow [2024-12-02 05:50:41,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 05:50:41,734 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 228 flow [2024-12-02 05:50:41,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-12-02 05:50:41,735 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-12-02 05:50:41,735 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 228 flow [2024-12-02 05:50:41,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:41,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:41,735 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 05:50:41,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 05:50:41,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:41,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:41,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash -497058889, now seen corresponding path program 1 times [2024-12-02 05:50:41,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733505320] [2024-12-02 05:50:41,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 05:50:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733505320] [2024-12-02 05:50:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733505320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:50:42,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:50:42,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 05:50:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982251862] [2024-12-02 05:50:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:50:42,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 05:50:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:42,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 05:50:42,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 05:50:42,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:42,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:42,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:42,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:42,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:43,306 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-12-02 05:50:43,306 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-12-02 05:50:43,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 5036 events. 2462/5036 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33580 event pairs, 2279 based on Foata normal form. 1/4196 useless extension candidates. Maximal degree in co-relation 9054. Up to 3940 conditions per place. [2024-12-02 05:50:43,340 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 50 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-12-02 05:50:43,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 332 flow [2024-12-02 05:50:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 05:50:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 05:50:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-12-02 05:50:43,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-12-02 05:50:43,342 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 228 flow. Second operand 3 states and 158 transitions. [2024-12-02 05:50:43,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 332 flow [2024-12-02 05:50:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 310 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-12-02 05:50:43,346 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 210 flow [2024-12-02 05:50:43,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-12-02 05:50:43,347 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-12-02 05:50:43,347 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 210 flow [2024-12-02 05:50:43,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:43,347 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:43,347 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:43,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 05:50:43,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:43,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash -932396783, now seen corresponding path program 1 times [2024-12-02 05:50:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:43,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604386075] [2024-12-02 05:50:43,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:43,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604386075] [2024-12-02 05:50:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604386075] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601501968] [2024-12-02 05:50:43,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:43,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:43,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:43,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:43,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 05:50:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:44,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 3751 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 05:50:44,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:44,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601501968] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:44,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:44,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 05:50:44,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496197002] [2024-12-02 05:50:44,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:44,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 05:50:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:44,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 05:50:44,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 05:50:44,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:44,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:45,031 INFO L124 PetriNetUnfolderBase]: 2462/5040 cut-off events. [2024-12-02 05:50:45,031 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-12-02 05:50:45,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 5040 events. 2462/5040 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 33582 event pairs, 2279 based on Foata normal form. 2/4202 useless extension candidates. Maximal degree in co-relation 9047. Up to 3938 conditions per place. [2024-12-02 05:50:45,052 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-12-02 05:50:45,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 339 flow [2024-12-02 05:50:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 05:50:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 05:50:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-12-02 05:50:45,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-12-02 05:50:45,054 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 210 flow. Second operand 7 states and 304 transitions. [2024-12-02 05:50:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 339 flow [2024-12-02 05:50:45,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 05:50:45,057 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 236 flow [2024-12-02 05:50:45,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-12-02 05:50:45,058 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-12-02 05:50:45,058 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 236 flow [2024-12-02 05:50:45,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:45,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:45,058 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:45,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 05:50:45,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:45,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:45,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1988185585, now seen corresponding path program 2 times [2024-12-02 05:50:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565112481] [2024-12-02 05:50:45,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 05:50:45,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:45,312 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 05:50:45,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:50:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 05:50:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:45,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565112481] [2024-12-02 05:50:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565112481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 05:50:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 05:50:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 05:50:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42882524] [2024-12-02 05:50:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 05:50:45,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 05:50:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:45,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 05:50:45,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 05:50:45,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 100 [2024-12-02 05:50:45,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:45,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:45,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 100 [2024-12-02 05:50:45,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:45,941 INFO L124 PetriNetUnfolderBase]: 2387/4834 cut-off events. [2024-12-02 05:50:45,941 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-12-02 05:50:45,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 4834 events. 2387/4834 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31459 event pairs, 1176 based on Foata normal form. 6/4051 useless extension candidates. Maximal degree in co-relation 8698. Up to 3783 conditions per place. [2024-12-02 05:50:45,956 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 66 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-12-02 05:50:45,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 392 flow [2024-12-02 05:50:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 05:50:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 05:50:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-12-02 05:50:45,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-12-02 05:50:45,957 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 236 flow. Second operand 4 states and 203 transitions. [2024-12-02 05:50:45,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 392 flow [2024-12-02 05:50:45,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 05:50:45,960 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 238 flow [2024-12-02 05:50:45,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-12-02 05:50:45,961 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-12-02 05:50:45,961 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 238 flow [2024-12-02 05:50:45,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:45,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:45,962 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:45,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 05:50:45,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:45,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1853426187, now seen corresponding path program 1 times [2024-12-02 05:50:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:45,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124722808] [2024-12-02 05:50:45,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124722808] [2024-12-02 05:50:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124722808] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432209350] [2024-12-02 05:50:46,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 05:50:46,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:46,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:46,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:46,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 05:50:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 05:50:46,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 3882 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 05:50:46,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:46,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:47,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432209350] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:47,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-12-02 05:50:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964931795] [2024-12-02 05:50:47,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:47,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 05:50:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:47,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 05:50:47,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-12-02 05:50:47,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:47,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 238 flow. Second operand has 18 states, 18 states have (on average 36.22222222222222) internal successors, (652), 18 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:47,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:47,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:47,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:47,723 INFO L124 PetriNetUnfolderBase]: 2382/4826 cut-off events. [2024-12-02 05:50:47,723 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-12-02 05:50:47,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 4826 events. 2382/4826 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31377 event pairs, 2231 based on Foata normal form. 4/4046 useless extension candidates. Maximal degree in co-relation 8682. Up to 3784 conditions per place. [2024-12-02 05:50:47,737 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-12-02 05:50:47,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 416 flow [2024-12-02 05:50:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 05:50:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 05:50:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 594 transitions. [2024-12-02 05:50:47,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.396 [2024-12-02 05:50:47,739 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 238 flow. Second operand 15 states and 594 transitions. [2024-12-02 05:50:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 416 flow [2024-12-02 05:50:47,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 05:50:47,742 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 329 flow [2024-12-02 05:50:47,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=329, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2024-12-02 05:50:47,742 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2024-12-02 05:50:47,742 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 329 flow [2024-12-02 05:50:47,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 36.22222222222222) internal successors, (652), 18 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:47,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:47,743 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:47,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 05:50:47,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 05:50:47,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:47,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1886846005, now seen corresponding path program 2 times [2024-12-02 05:50:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203925885] [2024-12-02 05:50:47,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 05:50:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:48,076 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 05:50:48,076 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:50:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:48,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203925885] [2024-12-02 05:50:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203925885] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342264085] [2024-12-02 05:50:48,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 05:50:48,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:48,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:48,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:48,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 05:50:49,368 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 05:50:49,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:50:49,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 4102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 05:50:49,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:50:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:49,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:50:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:49,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342264085] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:50:49,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:50:49,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-12-02 05:50:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390738] [2024-12-02 05:50:49,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:50:49,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 05:50:49,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:50:49,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 05:50:49,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 05:50:49,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:50:49,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 329 flow. Second operand has 34 states, 34 states have (on average 36.11764705882353) internal successors, (1228), 34 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:49,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:50:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:50:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:50:50,643 INFO L124 PetriNetUnfolderBase]: 2382/4850 cut-off events. [2024-12-02 05:50:50,643 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-12-02 05:50:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 4850 events. 2382/4850 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31392 event pairs, 2231 based on Foata normal form. 8/4074 useless extension candidates. Maximal degree in co-relation 8678. Up to 3784 conditions per place. [2024-12-02 05:50:50,662 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-12-02 05:50:50,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 635 flow [2024-12-02 05:50:50,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 05:50:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-12-02 05:50:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1174 transitions. [2024-12-02 05:50:50,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37870967741935485 [2024-12-02 05:50:50,667 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 329 flow. Second operand 31 states and 1174 transitions. [2024-12-02 05:50:50,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 635 flow [2024-12-02 05:50:50,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 625 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-12-02 05:50:50,671 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 560 flow [2024-12-02 05:50:50,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=560, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2024-12-02 05:50:50,672 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2024-12-02 05:50:50,672 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 560 flow [2024-12-02 05:50:50,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 36.11764705882353) internal successors, (1228), 34 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:50:50,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:50:50,673 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:50:50,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 05:50:50,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 05:50:50,873 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:50:50,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:50:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1461774517, now seen corresponding path program 3 times [2024-12-02 05:50:50,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:50:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216244948] [2024-12-02 05:50:50,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 05:50:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:50:51,706 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 05:50:51,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:50:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:50:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:50:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216244948] [2024-12-02 05:50:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216244948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:50:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437099542] [2024-12-02 05:50:53,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 05:50:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:50:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:50:53,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:50:53,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 05:53:09,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 05:53:09,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:53:09,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 4542 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 05:53:09,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:53:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:09,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:53:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437099542] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:53:10,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:53:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 66 [2024-12-02 05:53:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400414361] [2024-12-02 05:53:10,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:53:10,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 05:53:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:53:10,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 05:53:10,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=3266, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 05:53:10,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:53:10,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 114 transitions, 560 flow. Second operand has 67 states, 67 states have (on average 36.07462686567164) internal successors, (2417), 67 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:10,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:53:10,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:53:10,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:53:11,596 INFO L124 PetriNetUnfolderBase]: 2382/4898 cut-off events. [2024-12-02 05:53:11,596 INFO L125 PetriNetUnfolderBase]: For 1654/1654 co-relation queries the response was YES. [2024-12-02 05:53:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9166 conditions, 4898 events. 2382/4898 cut-off events. For 1654/1654 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31384 event pairs, 2231 based on Foata normal form. 16/4130 useless extension candidates. Maximal degree in co-relation 8686. Up to 3784 conditions per place. [2024-12-02 05:53:11,613 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 63 changer transitions 0/146 dead transitions. [2024-12-02 05:53:11,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 146 transitions, 1170 flow [2024-12-02 05:53:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 05:53:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-12-02 05:53:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 2334 transitions. [2024-12-02 05:53:11,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37047619047619046 [2024-12-02 05:53:11,618 INFO L175 Difference]: Start difference. First operand has 145 places, 114 transitions, 560 flow. Second operand 63 states and 2334 transitions. [2024-12-02 05:53:11,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 146 transitions, 1170 flow [2024-12-02 05:53:11,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 146 transitions, 1085 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-12-02 05:53:11,629 INFO L231 Difference]: Finished difference. Result has 210 places, 146 transitions, 1052 flow [2024-12-02 05:53:11,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=1052, PETRI_PLACES=210, PETRI_TRANSITIONS=146} [2024-12-02 05:53:11,629 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 123 predicate places. [2024-12-02 05:53:11,629 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 146 transitions, 1052 flow [2024-12-02 05:53:11,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 36.07462686567164) internal successors, (2417), 67 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:11,631 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:53:11,631 INFO L206 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:53:11,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 05:53:11,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:11,831 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:53:11,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:53:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash -514047563, now seen corresponding path program 4 times [2024-12-02 05:53:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:53:11,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622401087] [2024-12-02 05:53:11,832 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 05:53:11,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:53:12,029 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 05:53:12,029 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:53:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:16,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:53:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622401087] [2024-12-02 05:53:16,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622401087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:53:16,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282807037] [2024-12-02 05:53:16,143 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 05:53:16,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:16,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:53:16,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:53:16,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 05:53:17,166 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 05:53:17,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:53:17,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 5422 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 05:53:17,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 05:53:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:17,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 05:53:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:20,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282807037] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 05:53:20,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 05:53:20,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2024-12-02 05:53:20,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601477468] [2024-12-02 05:53:20,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 05:53:20,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-12-02 05:53:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 05:53:20,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-12-02 05:53:20,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2024-12-02 05:53:20,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 05:53:20,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 146 transitions, 1052 flow. Second operand has 130 states, 130 states have (on average 36.03076923076923) internal successors, (4684), 130 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:20,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 05:53:20,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 05:53:20,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 05:53:24,137 INFO L124 PetriNetUnfolderBase]: 2382/4994 cut-off events. [2024-12-02 05:53:24,137 INFO L125 PetriNetUnfolderBase]: For 12824/12824 co-relation queries the response was YES. [2024-12-02 05:53:24,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 4994 events. 2382/4994 cut-off events. For 12824/12824 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31366 event pairs, 2231 based on Foata normal form. 32/4242 useless extension candidates. Maximal degree in co-relation 8702. Up to 3784 conditions per place. [2024-12-02 05:53:24,166 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 127 changer transitions 0/210 dead transitions. [2024-12-02 05:53:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 210 transitions, 2302 flow [2024-12-02 05:53:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 05:53:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2024-12-02 05:53:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 4654 transitions. [2024-12-02 05:53:24,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36645669291338584 [2024-12-02 05:53:24,175 INFO L175 Difference]: Start difference. First operand has 210 places, 146 transitions, 1052 flow. Second operand 127 states and 4654 transitions. [2024-12-02 05:53:24,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 210 transitions, 2302 flow [2024-12-02 05:53:24,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 210 transitions, 2129 flow, removed 1 selfloop flow, removed 29 redundant places. [2024-12-02 05:53:24,210 INFO L231 Difference]: Finished difference. Result has 339 places, 210 transitions, 2160 flow [2024-12-02 05:53:24,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=2160, PETRI_PLACES=339, PETRI_TRANSITIONS=210} [2024-12-02 05:53:24,211 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 252 predicate places. [2024-12-02 05:53:24,211 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 210 transitions, 2160 flow [2024-12-02 05:53:24,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 36.03076923076923) internal successors, (4684), 130 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 05:53:24,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 05:53:24,214 INFO L206 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 05:53:24,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 05:53:24,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:24,414 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 05:53:24,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 05:53:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash -143592523, now seen corresponding path program 5 times [2024-12-02 05:53:24,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 05:53:24,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561754392] [2024-12-02 05:53:24,416 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 05:53:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 05:53:25,497 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2024-12-02 05:53:25,497 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 05:53:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 05:53:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 05:53:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561754392] [2024-12-02 05:53:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561754392] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 05:53:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94068749] [2024-12-02 05:53:37,736 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 05:53:37,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 05:53:37,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 05:53:37,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 05:53:37,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62144945-5bcf-46ef-98de-4bad21e8cb52/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process