./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.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_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/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_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/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_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:51:35,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:51:35,206 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 06:51:35,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:51:35,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:51:35,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:51:35,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:51:35,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:51:35,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:51:35,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:51:35,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:51:35,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:51:35,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:51:35,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:51:35,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:51:35,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:51:35,232 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:35,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:51:35,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:35,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:51:35,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:51:35,235 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_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/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 -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2024-12-02 06:51:35,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:51:35,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:51:35,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:51:35,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:51:35,466 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:51:35,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-12-02 06:51:38,118 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/data/298f24d34/612397f9dcf84d4cb08f46bf44269570/FLAGd061a54aa [2024-12-02 06:51:38,360 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:51:38,361 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2024-12-02 06:51:38,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/data/298f24d34/612397f9dcf84d4cb08f46bf44269570/FLAGd061a54aa [2024-12-02 06:51:38,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/data/298f24d34/612397f9dcf84d4cb08f46bf44269570 [2024-12-02 06:51:38,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:51:38,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:51:38,393 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:51:38,393 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:51:38,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:51:38,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:38" (1/1) ... [2024-12-02 06:51:38,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668cdc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:38, skipping insertion in model container [2024-12-02 06:51:38,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:38" (1/1) ... [2024-12-02 06:51:38,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:51:38,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:51:39,087 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:51:39,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:51:39,248 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:51:39,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39 WrapperNode [2024-12-02 06:51:39,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:51:39,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:51:39,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:51:39,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:51:39,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,372 INFO L138 Inliner]: procedures = 280, calls = 1606, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1799 [2024-12-02 06:51:39,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:51:39,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:51:39,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:51:39,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:51:39,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,436 INFO L175 MemorySlicer]: Split 1569 memory accesses to 8 slices as follows [2, 5, 259, 5, 1280, 2, 2, 14]. 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, 1, 1, 8]. [2024-12-02 06:51:39,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:51:39,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:51:39,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:51:39,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:51:39,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (1/1) ... [2024-12-02 06:51:39,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:51:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:51:39,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:51:39,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:51:39,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 06:51:39,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:51:39,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 06:51:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 06:51:39,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 06:51:39,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:51:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:51:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 06:51:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 06:51:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 06:51:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:51:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:51:39,589 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 06:51:39,763 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:51:39,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:51:41,614 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:51:41,614 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:52:15,062 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:52:15,063 INFO L312 CfgBuilder]: Removed 11 assume(true) statements. [2024-12-02 06:52:15,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:15 BoogieIcfgContainer [2024-12-02 06:52:15,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:52:15,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:52:15,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:52:15,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:52:15,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:38" (1/3) ... [2024-12-02 06:52:15,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54147356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:15, skipping insertion in model container [2024-12-02 06:52:15,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:39" (2/3) ... [2024-12-02 06:52:15,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54147356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:52:15, skipping insertion in model container [2024-12-02 06:52:15,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:52:15" (3/3) ... [2024-12-02 06:52:15,072 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2024-12-02 06:52:15,089 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:52:15,090 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_86-lists_racing.i that has 3 procedures, 81 locations, 1 initial locations, 11 loop locations, and 14 error locations. [2024-12-02 06:52:15,091 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:52:15,203 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 06:52:15,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2024-12-02 06:52:15,396 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2024-12-02 06:52:15,399 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 06:52:15,403 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 11. Compared 833 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 06:52:15,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2024-12-02 06:52:15,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2024-12-02 06:52:15,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:52:15,427 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;@3804bd6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:52:15,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-12-02 06:52:15,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:52:15,518 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 06:52:15,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:52:15,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:15,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 06:52:15,519 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 06:52:15,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 3796969, now seen corresponding path program 1 times [2024-12-02 06:52:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:15,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960524309] [2024-12-02 06:52:15,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:15,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:16,684 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 06:52:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960524309] [2024-12-02 06:52:16,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960524309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:16,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:16,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:52:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666402423] [2024-12-02 06:52:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:16,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:52:16,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:16,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:52:16,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:52:16,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:16,742 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 06:52:16,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:16,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:16,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:18,071 INFO L124 PetriNetUnfolderBase]: 2462/5038 cut-off events. [2024-12-02 06:52:18,071 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-12-02 06:52:18,082 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 33663 event pairs, 2279 based on Foata normal form. 349/4544 useless extension candidates. Maximal degree in co-relation 7642. Up to 3942 conditions per place. [2024-12-02 06:52:18,103 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 53 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-12-02 06:52:18,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 314 flow [2024-12-02 06:52:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:52:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:52:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-12-02 06:52:18,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-12-02 06:52:18,119 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 210 transitions. [2024-12-02 06:52:18,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 314 flow [2024-12-02 06:52:18,127 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 06:52:18,130 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2024-12-02 06:52:18,133 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 06:52:18,137 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-12-02 06:52:18,137 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2024-12-02 06:52:18,137 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 06:52:18,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:18,137 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 06:52:18,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:52:18,138 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 06:52:18,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1450143064, now seen corresponding path program 1 times [2024-12-02 06:52:18,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:18,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835056917] [2024-12-02 06:52:18,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:18,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:18,846 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 06:52:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835056917] [2024-12-02 06:52:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835056917] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81627598] [2024-12-02 06:52:18,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:18,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:18,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:18,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:52:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:19,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:52:19,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:19,680 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 06:52:19,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:52:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81627598] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:52:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:52:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756506898] [2024-12-02 06:52:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:19,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:52:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:19,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:52:19,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:52:19,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:19,693 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 06:52:19,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:19,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:20,448 INFO L124 PetriNetUnfolderBase]: 2462/5037 cut-off events. [2024-12-02 06:52:20,448 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-12-02 06:52:20,456 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 33630 event pairs, 2279 based on Foata normal form. 1/4195 useless extension candidates. Maximal degree in co-relation 9058. Up to 3937 conditions per place. [2024-12-02 06:52:20,471 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 49 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-12-02 06:52:20,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 328 flow [2024-12-02 06:52:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:52:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:52:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-12-02 06:52:20,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-12-02 06:52:20,475 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 6 states and 266 transitions. [2024-12-02 06:52:20,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 328 flow [2024-12-02 06:52:20,478 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 06:52:20,480 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 228 flow [2024-12-02 06:52:20,480 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 06:52:20,480 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-12-02 06:52:20,480 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 228 flow [2024-12-02 06:52:20,481 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 06:52:20,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:20,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 06:52:20,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:52:20,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:20,682 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 06:52:20,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2004765840, now seen corresponding path program 1 times [2024-12-02 06:52:20,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:20,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381031572] [2024-12-02 06:52:20,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:20,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:20,916 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 06:52:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:20,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381031572] [2024-12-02 06:52:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381031572] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:20,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:52:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782747369] [2024-12-02 06:52:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:20,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:52:20,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:20,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:52:20,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:52:20,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:20,922 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 06:52:20,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:20,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:21,405 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-12-02 06:52:21,405 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-12-02 06:52:21,412 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 33633 event pairs, 2279 based on Foata normal form. 1/4195 useless extension candidates. Maximal degree in co-relation 9054. Up to 3940 conditions per place. [2024-12-02 06:52:21,427 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 50 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-12-02 06:52:21,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 332 flow [2024-12-02 06:52:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:52:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:52:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-12-02 06:52:21,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-12-02 06:52:21,429 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 228 flow. Second operand 3 states and 158 transitions. [2024-12-02 06:52:21,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 332 flow [2024-12-02 06:52:21,432 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 06:52:21,434 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 210 flow [2024-12-02 06:52:21,434 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 06:52:21,435 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2024-12-02 06:52:21,435 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 210 flow [2024-12-02 06:52:21,435 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 06:52:21,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:21,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:21,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:52:21,436 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 06:52:21,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1859036315, now seen corresponding path program 1 times [2024-12-02 06:52:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166819300] [2024-12-02 06:52:21,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:21,740 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 06:52:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166819300] [2024-12-02 06:52:21,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166819300] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675589363] [2024-12-02 06:52:21,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:21,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:21,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:21,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:21,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:52:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:22,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 3751 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:52:22,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:22,411 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 06:52:22,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:22,441 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 06:52:22,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675589363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:22,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:22,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 06:52:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828300192] [2024-12-02 06:52:22,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:22,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:52:22,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:22,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:52:22,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:52:22,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:22,456 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 06:52:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:22,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:22,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:23,232 INFO L124 PetriNetUnfolderBase]: 2462/5040 cut-off events. [2024-12-02 06:52:23,232 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-12-02 06:52:23,239 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 33664 event pairs, 2279 based on Foata normal form. 2/4201 useless extension candidates. Maximal degree in co-relation 9047. Up to 3938 conditions per place. [2024-12-02 06:52:23,258 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-12-02 06:52:23,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 339 flow [2024-12-02 06:52:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:52:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 06:52:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-12-02 06:52:23,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-12-02 06:52:23,260 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 210 flow. Second operand 7 states and 304 transitions. [2024-12-02 06:52:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 339 flow [2024-12-02 06:52:23,263 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 06:52:23,264 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 236 flow [2024-12-02 06:52:23,265 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 06:52:23,265 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-12-02 06:52:23,265 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 236 flow [2024-12-02 06:52:23,266 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 06:52:23,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:23,266 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:23,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:52:23,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:23,467 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 06:52:23,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1545078523, now seen corresponding path program 2 times [2024-12-02 06:52:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248211478] [2024-12-02 06:52:23,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:52:23,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:23,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 06:52:23,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:23,734 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 06:52:23,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:23,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248211478] [2024-12-02 06:52:23,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248211478] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:52:23,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:52:23,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:52:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647248810] [2024-12-02 06:52:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:52:23,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:52:23,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:23,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:52:23,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:52:23,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 100 [2024-12-02 06:52:23,742 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 06:52:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:23,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 100 [2024-12-02 06:52:23,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:24,314 INFO L124 PetriNetUnfolderBase]: 2387/4834 cut-off events. [2024-12-02 06:52:24,314 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-12-02 06:52:24,320 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 31561 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 06:52:24,332 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 66 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-12-02 06:52:24,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 392 flow [2024-12-02 06:52:24,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:52:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:52:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-12-02 06:52:24,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-12-02 06:52:24,334 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 236 flow. Second operand 4 states and 203 transitions. [2024-12-02 06:52:24,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 392 flow [2024-12-02 06:52:24,335 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 06:52:24,337 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 238 flow [2024-12-02 06:52:24,337 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 06:52:24,338 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-12-02 06:52:24,338 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 238 flow [2024-12-02 06:52:24,338 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 06:52:24,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:24,338 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:24,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:52:24,339 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 06:52:24,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash -265960820, now seen corresponding path program 1 times [2024-12-02 06:52:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315802655] [2024-12-02 06:52:24,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:24,924 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 06:52:24,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315802655] [2024-12-02 06:52:24,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315802655] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449664073] [2024-12-02 06:52:24,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:52:24,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:24,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:24,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:52:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:52:25,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 3882 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:52:25,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:25,477 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 06:52:25,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:25,549 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 06:52:25,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449664073] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:25,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:25,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-12-02 06:52:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674164991] [2024-12-02 06:52:25,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:25,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:52:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:25,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:52:25,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:52:25,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:25,566 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 06:52:25,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:25,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:25,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:26,361 INFO L124 PetriNetUnfolderBase]: 2382/4826 cut-off events. [2024-12-02 06:52:26,361 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-12-02 06:52:26,367 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 31430 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 06:52:26,379 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-12-02 06:52:26,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 416 flow [2024-12-02 06:52:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:52:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 06:52:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 594 transitions. [2024-12-02 06:52:26,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.396 [2024-12-02 06:52:26,381 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 238 flow. Second operand 15 states and 594 transitions. [2024-12-02 06:52:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 416 flow [2024-12-02 06:52:26,383 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 06:52:26,385 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 329 flow [2024-12-02 06:52:26,385 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 06:52:26,386 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2024-12-02 06:52:26,386 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 329 flow [2024-12-02 06:52:26,386 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 06:52:26,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:26,386 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:26,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:52:26,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 06:52:26,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 06:52:26,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash 490530636, now seen corresponding path program 2 times [2024-12-02 06:52:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534384303] [2024-12-02 06:52:26,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:52:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:26,771 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:52:26,771 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:27,842 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 06:52:27,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534384303] [2024-12-02 06:52:27,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534384303] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40345479] [2024-12-02 06:52:27,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:52:27,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:27,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:27,844 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:27,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:52:28,442 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:52:28,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:28,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 4102 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:52:28,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:52:28,511 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 06:52:28,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:52:28,765 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 06:52:28,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40345479] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:52:28,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:52:28,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-12-02 06:52:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045206977] [2024-12-02 06:52:28,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:52:28,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 06:52:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:52:28,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 06:52:28,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:52:28,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:52:28,799 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 06:52:28,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:52:28,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:52:28,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:52:29,837 INFO L124 PetriNetUnfolderBase]: 2382/4850 cut-off events. [2024-12-02 06:52:29,837 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-12-02 06:52:29,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 4850 events. 2382/4850 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31436 event pairs, 2231 based on Foata normal form. 8/4073 useless extension candidates. Maximal degree in co-relation 8678. Up to 3784 conditions per place. [2024-12-02 06:52:29,858 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2024-12-02 06:52:29,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 635 flow [2024-12-02 06:52:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:52:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-12-02 06:52:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1174 transitions. [2024-12-02 06:52:29,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37870967741935485 [2024-12-02 06:52:29,864 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 329 flow. Second operand 31 states and 1174 transitions. [2024-12-02 06:52:29,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 635 flow [2024-12-02 06:52:29,867 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 06:52:29,869 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 560 flow [2024-12-02 06:52:29,869 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 06:52:29,870 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2024-12-02 06:52:29,870 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 560 flow [2024-12-02 06:52:29,871 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 06:52:29,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:52:29,871 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:52:29,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:52:30,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:30,072 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 06:52:30,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:52:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1238904628, now seen corresponding path program 3 times [2024-12-02 06:52:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:52:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039295499] [2024-12-02 06:52:30,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:52:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:52:31,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 06:52:31,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:52:32,978 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 06:52:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:52:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039295499] [2024-12-02 06:52:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039295499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:52:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981716240] [2024-12-02 06:52:32,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:52:32,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:52:32,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:52:32,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:52:32,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:54:40,423 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-12-02 06:54:40,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:54:40,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 4542 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 06:54:40,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:54:40,636 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 06:54:40,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:54:41,437 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 06:54:41,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981716240] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:54:41,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:54:41,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 66 [2024-12-02 06:54:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822390909] [2024-12-02 06:54:41,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:54:41,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 06:54:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:41,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 06:54:41,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1156, Invalid=3266, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 06:54:41,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:54:41,492 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 06:54:41,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:54:41,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:54:41,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:54:43,046 INFO L124 PetriNetUnfolderBase]: 2382/4898 cut-off events. [2024-12-02 06:54:43,046 INFO L125 PetriNetUnfolderBase]: For 1653/1653 co-relation queries the response was YES. [2024-12-02 06:54:43,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9166 conditions, 4898 events. 2382/4898 cut-off events. For 1653/1653 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31422 event pairs, 2231 based on Foata normal form. 16/4129 useless extension candidates. Maximal degree in co-relation 8686. Up to 3784 conditions per place. [2024-12-02 06:54:43,064 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 63 changer transitions 0/146 dead transitions. [2024-12-02 06:54:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 146 transitions, 1170 flow [2024-12-02 06:54:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-12-02 06:54:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-12-02 06:54:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 2334 transitions. [2024-12-02 06:54:43,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37047619047619046 [2024-12-02 06:54:43,074 INFO L175 Difference]: Start difference. First operand has 145 places, 114 transitions, 560 flow. Second operand 63 states and 2334 transitions. [2024-12-02 06:54:43,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 146 transitions, 1170 flow [2024-12-02 06:54:43,083 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 06:54:43,085 INFO L231 Difference]: Finished difference. Result has 210 places, 146 transitions, 1052 flow [2024-12-02 06:54:43,086 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 06:54:43,086 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 123 predicate places. [2024-12-02 06:54:43,087 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 146 transitions, 1052 flow [2024-12-02 06:54:43,088 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 06:54:43,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:54:43,088 INFO L206 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:43,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:54:43,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 06:54:43,289 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 06:54:43,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash 506471372, now seen corresponding path program 4 times [2024-12-02 06:54:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:43,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925555435] [2024-12-02 06:54:43,290 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:54:43,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:43,515 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:54:43,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:54:47,899 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 06:54:47,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:54:47,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925555435] [2024-12-02 06:54:47,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925555435] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:54:47,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745264094] [2024-12-02 06:54:47,899 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 06:54:47,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:54:47,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:54:47,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:54:48,937 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 06:54:48,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:54:48,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 5422 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 06:54:48,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:54:49,133 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 06:54:49,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:54:52,277 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 06:54:52,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745264094] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:54:52,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:54:52,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2024-12-02 06:54:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103890377] [2024-12-02 06:54:52,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:54:52,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2024-12-02 06:54:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:54:52,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2024-12-02 06:54:52,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2024-12-02 06:54:52,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 100 [2024-12-02 06:54:52,443 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 06:54:52,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:54:52,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 100 [2024-12-02 06:54:52,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:54:56,299 INFO L124 PetriNetUnfolderBase]: 2382/4994 cut-off events. [2024-12-02 06:54:56,300 INFO L125 PetriNetUnfolderBase]: For 12823/12823 co-relation queries the response was YES. [2024-12-02 06:54:56,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 4994 events. 2382/4994 cut-off events. For 12823/12823 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 31437 event pairs, 2231 based on Foata normal form. 32/4241 useless extension candidates. Maximal degree in co-relation 8702. Up to 3784 conditions per place. [2024-12-02 06:54:56,315 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 50 selfloop transitions, 127 changer transitions 0/210 dead transitions. [2024-12-02 06:54:56,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 210 transitions, 2302 flow [2024-12-02 06:54:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 06:54:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2024-12-02 06:54:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 4654 transitions. [2024-12-02 06:54:56,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36645669291338584 [2024-12-02 06:54:56,322 INFO L175 Difference]: Start difference. First operand has 210 places, 146 transitions, 1052 flow. Second operand 127 states and 4654 transitions. [2024-12-02 06:54:56,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 210 transitions, 2302 flow [2024-12-02 06:54:56,348 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 06:54:56,351 INFO L231 Difference]: Finished difference. Result has 339 places, 210 transitions, 2160 flow [2024-12-02 06:54:56,351 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 06:54:56,352 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 252 predicate places. [2024-12-02 06:54:56,352 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 210 transitions, 2160 flow [2024-12-02 06:54:56,354 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 06:54:56,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:54:56,354 INFO L206 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:54:56,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:54:56,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:54:56,555 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-12-02 06:54:56,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:54:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1628096972, now seen corresponding path program 5 times [2024-12-02 06:54:56,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:54:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133193121] [2024-12-02 06:54:56,559 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:54:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:54:57,776 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2024-12-02 06:54:57,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:55:09,007 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 06:55:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:55:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133193121] [2024-12-02 06:55:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133193121] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:55:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196732357] [2024-12-02 06:55:09,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 06:55:09,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:55:09,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:55:09,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:55:09,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5353e0fb-86e9-43a5-9e7d-e1a5d388f1e1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process