./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX --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 a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:31:45,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:31:45,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:31:45,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:31:45,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:31:45,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:31:45,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:31:45,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:31:45,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:31:45,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:31:45,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:31:45,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:31:45,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:31:45,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:31:45,869 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:31:45,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:31:45,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:31:45,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:31:45,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:31:45,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:31:45,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:31:45,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:31:45,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:31:45,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:31:45,873 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:31:45,873 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:31:45,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:31:45,873 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:31:45,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:31:45,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:31:45,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:31:45,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:31:45,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:31:45,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:31:45,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:31:45,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:31:45,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:31:45,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:31:45,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:31:45,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:31:45,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:31:45,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:31:45,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:31:45,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:31:45,879 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a178b12ba1b75e8e390c539a1b1599b5e56cbe73098e0c8e7ca0eeb62a619e80 [2024-11-08 18:31:46,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:31:46,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:31:46,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:31:46,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:31:46,185 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:31:46,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i Unable to find full path for "g++" [2024-11-08 18:31:48,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:31:48,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:31:48,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/sv-benchmarks/c/goblint-regression/28-race_reach_19-callback_racing.i [2024-11-08 18:31:48,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/data/015f429da/446dbaab419f444aad4c1bebadf1f89c/FLAG08c254b93 [2024-11-08 18:31:48,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/data/015f429da/446dbaab419f444aad4c1bebadf1f89c [2024-11-08 18:31:48,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:31:48,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:31:48,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:31:48,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:31:48,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:31:48,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:31:48" (1/1) ... [2024-11-08 18:31:48,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c7b861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:48, skipping insertion in model container [2024-11-08 18:31:48,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:31:48" (1/1) ... [2024-11-08 18:31:48,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:31:49,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:31:49,150 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:31:49,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:31:49,244 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:31:49,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49 WrapperNode [2024-11-08 18:31:49,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:31:49,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:31:49,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:31:49,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:31:49,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,294 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 152 [2024-11-08 18:31:49,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:31:49,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:31:49,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:31:49,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:31:49,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,328 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 2, 5, 5]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 5, 5]. The 1 writes are split as follows [0, 0, 1, 0, 0]. [2024-11-08 18:31:49,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:31:49,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:31:49,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:31:49,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:31:49,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (1/1) ... [2024-11-08 18:31:49,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:31:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:49,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:31:49,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:31:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:31:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:31:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:31:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 18:31:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 18:31:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:31:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:31:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:31:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 18:31:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 18:31:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:31:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:31:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:31:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 18:31:49,446 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 18:31:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:31:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:31:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:31:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:31:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 18:31:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 18:31:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:31:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:31:49,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:31:49,451 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:31:49,661 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:31:49,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:31:50,018 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:31:50,019 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:31:50,292 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:31:50,293 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 18:31:50,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:31:50 BoogieIcfgContainer [2024-11-08 18:31:50,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:31:50,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:31:50,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:31:50,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:31:50,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:31:48" (1/3) ... [2024-11-08 18:31:50,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa6aa51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:31:50, skipping insertion in model container [2024-11-08 18:31:50,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:31:49" (2/3) ... [2024-11-08 18:31:50,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa6aa51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:31:50, skipping insertion in model container [2024-11-08 18:31:50,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:31:50" (3/3) ... [2024-11-08 18:31:50,307 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_19-callback_racing.i [2024-11-08 18:31:50,326 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:31:50,327 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-08 18:31:50,327 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:31:50,390 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 18:31:50,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 78 transitions, 163 flow [2024-11-08 18:31:50,483 INFO L124 PetriNetUnfolderBase]: 25/130 cut-off events. [2024-11-08 18:31:50,483 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:31:50,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 25/130 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 425 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2024-11-08 18:31:50,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 78 transitions, 163 flow [2024-11-08 18:31:50,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 77 transitions, 161 flow [2024-11-08 18:31:50,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:31:50,509 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;@351c3e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:31:50,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 18:31:50,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:31:50,516 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-08 18:31:50,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:50,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:50,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:31:50,518 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:50,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 203307975, now seen corresponding path program 1 times [2024-11-08 18:31:50,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:50,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598284527] [2024-11-08 18:31:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:50,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:50,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598284527] [2024-11-08 18:31:50,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598284527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:50,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:31:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141131753] [2024-11-08 18:31:50,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:50,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:50,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:50,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:50,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 78 [2024-11-08 18:31:50,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:50,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:50,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 78 [2024-11-08 18:31:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:51,333 INFO L124 PetriNetUnfolderBase]: 161/492 cut-off events. [2024-11-08 18:31:51,333 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:31:51,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 492 events. 161/492 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2440 event pairs, 0 based on Foata normal form. 58/500 useless extension candidates. Maximal degree in co-relation 776. Up to 283 conditions per place. [2024-11-08 18:31:51,339 INFO L140 encePairwiseOnDemand]: 63/78 looper letters, 42 selfloop transitions, 3 changer transitions 1/80 dead transitions. [2024-11-08 18:31:51,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 259 flow [2024-11-08 18:31:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:31:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:31:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-08 18:31:51,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-08 18:31:51,355 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 161 flow. Second operand 4 states and 198 transitions. [2024-11-08 18:31:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 259 flow [2024-11-08 18:31:51,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:31:51,366 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 151 flow [2024-11-08 18:31:51,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=78, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-08 18:31:51,372 INFO L277 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-11-08 18:31:51,372 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 151 flow [2024-11-08 18:31:51,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:51,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:51,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:51,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:31:51,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:51,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 408104464, now seen corresponding path program 1 times [2024-11-08 18:31:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546099579] [2024-11-08 18:31:51,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:51,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:51,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:31:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:51,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:31:51,439 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:31:51,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-08 18:31:51,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-08 18:31:51,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-08 18:31:51,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-08 18:31:51,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-08 18:31:51,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-08 18:31:51,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-08 18:31:51,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-08 18:31:51,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-08 18:31:51,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-08 18:31:51,445 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-08 18:31:51,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:31:51,445 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 18:31:51,448 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:31:51,449 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 18:31:51,471 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:31:51,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 92 transitions, 200 flow [2024-11-08 18:31:51,505 INFO L124 PetriNetUnfolderBase]: 41/218 cut-off events. [2024-11-08 18:31:51,505 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 18:31:51,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 218 events. 41/218 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 856 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 138. Up to 9 conditions per place. [2024-11-08 18:31:51,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 92 transitions, 200 flow [2024-11-08 18:31:51,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 92 transitions, 200 flow [2024-11-08 18:31:51,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:31:51,514 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;@351c3e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:31:51,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 18:31:51,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:31:51,521 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-08 18:31:51,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:51,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:51,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:31:51,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:51,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:51,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1369969837, now seen corresponding path program 1 times [2024-11-08 18:31:51,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:51,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405621133] [2024-11-08 18:31:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:51,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:51,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:51,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405621133] [2024-11-08 18:31:51,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405621133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:51,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:51,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:31:51,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164361185] [2024-11-08 18:31:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:51,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:51,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:51,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2024-11-08 18:31:51,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:51,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:51,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2024-11-08 18:31:51,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:52,476 INFO L124 PetriNetUnfolderBase]: 2370/5012 cut-off events. [2024-11-08 18:31:52,476 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-08 18:31:52,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8732 conditions, 5012 events. 2370/5012 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 37543 event pairs, 990 based on Foata normal form. 595/5198 useless extension candidates. Maximal degree in co-relation 1151. Up to 3656 conditions per place. [2024-11-08 18:31:52,515 INFO L140 encePairwiseOnDemand]: 75/92 looper letters, 55 selfloop transitions, 3 changer transitions 1/97 dead transitions. [2024-11-08 18:31:52,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 328 flow [2024-11-08 18:31:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:31:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:31:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-11-08 18:31:52,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222826086956522 [2024-11-08 18:31:52,522 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 200 flow. Second operand 4 states and 229 transitions. [2024-11-08 18:31:52,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 328 flow [2024-11-08 18:31:52,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 97 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:31:52,526 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 204 flow [2024-11-08 18:31:52,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2024-11-08 18:31:52,528 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 5 predicate places. [2024-11-08 18:31:52,528 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 204 flow [2024-11-08 18:31:52,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:52,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:52,529 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:52,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:31:52,529 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:52,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1772312359, now seen corresponding path program 1 times [2024-11-08 18:31:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684469800] [2024-11-08 18:31:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:52,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:52,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684469800] [2024-11-08 18:31:52,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684469800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163572305] [2024-11-08 18:31:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:52,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:52,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:31:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:52,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:31:52,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:52,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:31:52,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163572305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:52,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:31:52,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:31:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566809521] [2024-11-08 18:31:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:52,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:31:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:31:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:31:52,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2024-11-08 18:31:52,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:52,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:52,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2024-11-08 18:31:52,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:53,797 INFO L124 PetriNetUnfolderBase]: 2246/4919 cut-off events. [2024-11-08 18:31:53,797 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-08 18:31:53,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 4919 events. 2246/4919 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 37603 event pairs, 112 based on Foata normal form. 49/4560 useless extension candidates. Maximal degree in co-relation 1249. Up to 2512 conditions per place. [2024-11-08 18:31:53,834 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 75 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-08 18:31:53,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 436 flow [2024-11-08 18:31:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:31:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:31:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2024-11-08 18:31:53,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5615942028985508 [2024-11-08 18:31:53,838 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 204 flow. Second operand 6 states and 310 transitions. [2024-11-08 18:31:53,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 436 flow [2024-11-08 18:31:53,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:31:53,845 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 210 flow [2024-11-08 18:31:53,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-11-08 18:31:53,847 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2024-11-08 18:31:53,847 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 210 flow [2024-11-08 18:31:53,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:53,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:53,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:31:53,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:31:54,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:54,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:54,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash 892892268, now seen corresponding path program 1 times [2024-11-08 18:31:54,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:54,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736959325] [2024-11-08 18:31:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:54,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:31:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736959325] [2024-11-08 18:31:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736959325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:31:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745760229] [2024-11-08 18:31:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:54,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:54,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-08 18:31:54,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:54,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:54,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-08 18:31:54,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:54,813 INFO L124 PetriNetUnfolderBase]: 2180/4697 cut-off events. [2024-11-08 18:31:54,815 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2024-11-08 18:31:54,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8430 conditions, 4697 events. 2180/4697 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 35187 event pairs, 437 based on Foata normal form. 105/4446 useless extension candidates. Maximal degree in co-relation 3942. Up to 2804 conditions per place. [2024-11-08 18:31:54,847 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 62 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2024-11-08 18:31:54,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 388 flow [2024-11-08 18:31:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:31:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:31:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-08 18:31:54,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-11-08 18:31:54,850 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 210 flow. Second operand 4 states and 216 transitions. [2024-11-08 18:31:54,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 388 flow [2024-11-08 18:31:54,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 378 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 18:31:54,856 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 212 flow [2024-11-08 18:31:54,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-08 18:31:54,857 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2024-11-08 18:31:54,858 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 212 flow [2024-11-08 18:31:54,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:54,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:54,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:54,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:31:54,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:54,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 731261865, now seen corresponding path program 1 times [2024-11-08 18:31:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:54,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735481983] [2024-11-08 18:31:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735481983] [2024-11-08 18:31:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735481983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355002039] [2024-11-08 18:31:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:54,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:54,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:54,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:31:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:55,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:31:55,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:55,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:31:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355002039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:31:55,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:31:55,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 18:31:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159134853] [2024-11-08 18:31:55,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:31:55,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:31:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:31:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:31:55,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-08 18:31:55,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 39.3) internal successors, (393), 10 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:55,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:55,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-08 18:31:55,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:31:55,546 INFO L124 PetriNetUnfolderBase]: 402/794 cut-off events. [2024-11-08 18:31:55,546 INFO L125 PetriNetUnfolderBase]: For 705/705 co-relation queries the response was YES. [2024-11-08 18:31:55,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 794 events. 402/794 cut-off events. For 705/705 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4158 event pairs, 28 based on Foata normal form. 56/850 useless extension candidates. Maximal degree in co-relation 245. Up to 399 conditions per place. [2024-11-08 18:31:55,552 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 56 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-08 18:31:55,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 308 flow [2024-11-08 18:31:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:31:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 18:31:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 322 transitions. [2024-11-08 18:31:55,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-08 18:31:55,554 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 212 flow. Second operand 7 states and 322 transitions. [2024-11-08 18:31:55,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 308 flow [2024-11-08 18:31:55,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 295 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:31:55,561 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 103 flow [2024-11-08 18:31:55,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2024-11-08 18:31:55,562 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -34 predicate places. [2024-11-08 18:31:55,562 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 103 flow [2024-11-08 18:31:55,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.3) internal successors, (393), 10 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:55,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:55,564 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 18:31:55,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:31:55,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 18:31:55,769 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1421605166, now seen corresponding path program 1 times [2024-11-08 18:31:55,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198371342] [2024-11-08 18:31:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:55,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:31:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:31:55,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:31:55,835 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:31:55,835 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-08 18:31:55,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-08 18:31:55,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-08 18:31:55,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-08 18:31:55,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-08 18:31:55,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-08 18:31:55,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-08 18:31:55,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-08 18:31:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-08 18:31:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-08 18:31:55,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-08 18:31:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:31:55,842 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-08 18:31:55,842 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:31:55,843 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 18:31:55,883 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:31:55,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 106 transitions, 239 flow [2024-11-08 18:31:55,928 INFO L124 PetriNetUnfolderBase]: 62/331 cut-off events. [2024-11-08 18:31:55,929 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 18:31:55,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 331 events. 62/331 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1413 event pairs, 1 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 233. Up to 16 conditions per place. [2024-11-08 18:31:55,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 106 transitions, 239 flow [2024-11-08 18:31:55,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 106 transitions, 239 flow [2024-11-08 18:31:55,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:31:55,936 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;@351c3e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:31:55,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 18:31:55,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:31:55,941 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-08 18:31:55,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:31:55,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:31:55,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:31:55,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:31:55,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1765888031, now seen corresponding path program 1 times [2024-11-08 18:31:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:55,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459017045] [2024-11-08 18:31:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459017045] [2024-11-08 18:31:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459017045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:31:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:31:56,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:31:56,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87499822] [2024-11-08 18:31:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:31:56,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:31:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:31:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:31:56,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 106 [2024-11-08 18:31:56,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:56,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:31:56,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 106 [2024-11-08 18:31:56,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:01,286 INFO L124 PetriNetUnfolderBase]: 25390/43856 cut-off events. [2024-11-08 18:32:01,286 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-11-08 18:32:01,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79404 conditions, 43856 events. 25390/43856 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 381259 event pairs, 15385 based on Foata normal form. 5576/46605 useless extension candidates. Maximal degree in co-relation 8704. Up to 35111 conditions per place. [2024-11-08 18:32:01,502 INFO L140 encePairwiseOnDemand]: 87/106 looper letters, 63 selfloop transitions, 3 changer transitions 1/109 dead transitions. [2024-11-08 18:32:01,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 379 flow [2024-11-08 18:32:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:32:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:32:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-11-08 18:32:01,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6014150943396226 [2024-11-08 18:32:01,504 INFO L175 Difference]: Start difference. First operand has 93 places, 106 transitions, 239 flow. Second operand 4 states and 255 transitions. [2024-11-08 18:32:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 379 flow [2024-11-08 18:32:01,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 379 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:32:01,507 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 239 flow [2024-11-08 18:32:01,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-11-08 18:32:01,508 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 5 predicate places. [2024-11-08 18:32:01,508 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 239 flow [2024-11-08 18:32:01,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:01,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:01,509 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:01,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:32:01,509 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:32:01,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1878283919, now seen corresponding path program 1 times [2024-11-08 18:32:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:01,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073292236] [2024-11-08 18:32:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:01,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:01,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073292236] [2024-11-08 18:32:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073292236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708236147] [2024-11-08 18:32:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:01,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:01,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:32:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:01,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:32:01,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:01,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:32:01,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708236147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:32:01,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:32:01,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:32:01,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161300553] [2024-11-08 18:32:01,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:32:01,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:32:01,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:01,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:32:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:32:01,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 106 [2024-11-08 18:32:01,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:01,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:01,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 106 [2024-11-08 18:32:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:05,317 INFO L124 PetriNetUnfolderBase]: 23853/43445 cut-off events. [2024-11-08 18:32:05,318 INFO L125 PetriNetUnfolderBase]: For 2395/2395 co-relation queries the response was YES. [2024-11-08 18:32:05,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77977 conditions, 43445 events. 23853/43445 cut-off events. For 2395/2395 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 401210 event pairs, 1981 based on Foata normal form. 392/40748 useless extension candidates. Maximal degree in co-relation 11275. Up to 23839 conditions per place. [2024-11-08 18:32:05,523 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 95 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2024-11-08 18:32:05,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 143 transitions, 535 flow [2024-11-08 18:32:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:32:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:32:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-11-08 18:32:05,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5566037735849056 [2024-11-08 18:32:05,525 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 239 flow. Second operand 6 states and 354 transitions. [2024-11-08 18:32:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 143 transitions, 535 flow [2024-11-08 18:32:05,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:32:05,531 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 245 flow [2024-11-08 18:32:05,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-08 18:32:05,532 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 7 predicate places. [2024-11-08 18:32:05,533 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 245 flow [2024-11-08 18:32:05,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.5) internal successors, (261), 6 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:05,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:05,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:32:05,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:32:05,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:05,735 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:32:05,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:05,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1902741310, now seen corresponding path program 1 times [2024-11-08 18:32:05,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599102579] [2024-11-08 18:32:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:32:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599102579] [2024-11-08 18:32:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599102579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:32:05,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:32:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:32:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553606791] [2024-11-08 18:32:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:32:05,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:32:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:32:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:32:05,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 106 [2024-11-08 18:32:05,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:05,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:05,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 106 [2024-11-08 18:32:05,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:09,722 INFO L124 PetriNetUnfolderBase]: 23460/42700 cut-off events. [2024-11-08 18:32:09,723 INFO L125 PetriNetUnfolderBase]: For 3637/3637 co-relation queries the response was YES. [2024-11-08 18:32:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77247 conditions, 42700 events. 23460/42700 cut-off events. For 3637/3637 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 393457 event pairs, 1980 based on Foata normal form. 791/40782 useless extension candidates. Maximal degree in co-relation 8614. Up to 26581 conditions per place. [2024-11-08 18:32:09,960 INFO L140 encePairwiseOnDemand]: 100/106 looper letters, 82 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2024-11-08 18:32:09,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 129 transitions, 487 flow [2024-11-08 18:32:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:32:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:32:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-08 18:32:09,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-11-08 18:32:09,963 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 245 flow. Second operand 4 states and 252 transitions. [2024-11-08 18:32:09,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 129 transitions, 487 flow [2024-11-08 18:32:09,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 477 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 18:32:09,972 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 247 flow [2024-11-08 18:32:09,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-08 18:32:09,973 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 6 predicate places. [2024-11-08 18:32:09,973 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 247 flow [2024-11-08 18:32:09,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:09,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:09,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:32:09,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:32:09,975 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:32:09,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1960728949, now seen corresponding path program 1 times [2024-11-08 18:32:09,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:09,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313937499] [2024-11-08 18:32:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:10,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313937499] [2024-11-08 18:32:10,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313937499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:10,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862909983] [2024-11-08 18:32:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:10,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:10,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:10,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:10,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:32:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:10,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:32:10,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:10,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862909983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:10,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-08 18:32:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590708588] [2024-11-08 18:32:10,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:10,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:32:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:32:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:32:10,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 106 [2024-11-08 18:32:10,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:10,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:10,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 106 [2024-11-08 18:32:10,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:32:14,280 INFO L124 PetriNetUnfolderBase]: 21886/39283 cut-off events. [2024-11-08 18:32:14,281 INFO L125 PetriNetUnfolderBase]: For 5393/5393 co-relation queries the response was YES. [2024-11-08 18:32:14,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72208 conditions, 39283 events. 21886/39283 cut-off events. For 5393/5393 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 350736 event pairs, 923 based on Foata normal form. 56/36844 useless extension candidates. Maximal degree in co-relation 8102. Up to 24077 conditions per place. [2024-11-08 18:32:14,504 INFO L140 encePairwiseOnDemand]: 101/106 looper letters, 105 selfloop transitions, 7 changer transitions 0/153 dead transitions. [2024-11-08 18:32:14,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 153 transitions, 608 flow [2024-11-08 18:32:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:32:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 18:32:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 401 transitions. [2024-11-08 18:32:14,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5404312668463612 [2024-11-08 18:32:14,507 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 247 flow. Second operand 7 states and 401 transitions. [2024-11-08 18:32:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 153 transitions, 608 flow [2024-11-08 18:32:14,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:32:14,515 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 285 flow [2024-11-08 18:32:14,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-11-08 18:32:14,517 INFO L277 CegarLoopForPetriNet]: 93 programPoint places, 13 predicate places. [2024-11-08 18:32:14,517 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 285 flow [2024-11-08 18:32:14,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:14,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:14,518 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-11-08 18:32:14,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:32:14,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f31b61-7d84-41b3-bf43-fbcb5dfe1997/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:14,726 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:32:14,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 34688613, now seen corresponding path program 1 times [2024-11-08 18:32:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050765604] [2024-11-08 18:32:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:32:14,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:32:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:32:14,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:32:14,822 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:32:14,822 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-08 18:32:14,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-08 18:32:14,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-08 18:32:14,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-08 18:32:14,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-08 18:32:14,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-08 18:32:14,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-08 18:32:14,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-08 18:32:14,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-08 18:32:14,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-08 18:32:14,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-08 18:32:14,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:32:14,825 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-08 18:32:14,826 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:32:14,826 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 18:32:14,858 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:32:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 120 transitions, 280 flow [2024-11-08 18:32:14,919 INFO L124 PetriNetUnfolderBase]: 95/496 cut-off events. [2024-11-08 18:32:14,919 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-08 18:32:14,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 496 events. 95/496 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2298 event pairs, 6 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 359. Up to 32 conditions per place. [2024-11-08 18:32:14,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 120 transitions, 280 flow [2024-11-08 18:32:14,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 120 transitions, 280 flow [2024-11-08 18:32:14,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:32:14,930 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;@351c3e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:32:14,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 18:32:14,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:32:14,934 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-08 18:32:14,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:32:14,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:32:14,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 18:32:14,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-08 18:32:14,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:32:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1020946987, now seen corresponding path program 1 times [2024-11-08 18:32:14,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:32:14,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172734306] [2024-11-08 18:32:14,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:32:14,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:32:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:14,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:14,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172734306] [2024-11-08 18:32:14,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172734306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:32:14,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:32:14,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:32:14,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548022410] [2024-11-08 18:32:14,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:32:14,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:32:14,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:32:14,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:32:15,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 120 [2024-11-08 18:32:15,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:32:15,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:32:15,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 120 [2024-11-08 18:32:15,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand