./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/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_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/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_974bb605-1e6b-45a7-a78d-d78afbfc9c46/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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:24:26,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:24:26,163 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:24:26,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:24:26,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:24:26,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:24:26,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:24:26,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:24:26,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:24:26,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:24:26,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:24:26,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:24:26,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:24:26,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:24:26,214 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:24:26,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:24:26,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:24:26,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:24:26,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:24:26,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:24:26,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:24:26,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:24:26,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:24:26,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:24:26,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:24:26,218 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:24:26,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:24:26,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:24:26,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:24:26,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:24:26,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:24:26,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:24:26,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:24:26,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:24:26,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:24:26,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:24:26,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:24:26,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:24:26,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:24:26,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:24:26,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:24:26,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:24:26,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:24:26,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:24:26,227 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_974bb605-1e6b-45a7-a78d-d78afbfc9c46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-08 17:24:26,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:24:26,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:24:26,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:24:26,579 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:24:26,580 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:24:26,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c Unable to find full path for "g++" [2024-11-08 17:24:28,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:24:28,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:24:28,794 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-08 17:24:28,803 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/data/740e9994f/c6fed1e0304c4c5a8670491cba67ae3c/FLAGa5dc5d836 [2024-11-08 17:24:29,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/data/740e9994f/c6fed1e0304c4c5a8670491cba67ae3c [2024-11-08 17:24:29,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:24:29,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:24:29,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:24:29,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:24:29,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:24:29,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47852ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29, skipping insertion in model container [2024-11-08 17:24:29,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:24:29,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:24:29,460 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:24:29,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:24:29,514 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:24:29,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29 WrapperNode [2024-11-08 17:24:29,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:24:29,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:24:29,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:24:29,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:24:29,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,573 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 254 [2024-11-08 17:24:29,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:24:29,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:24:29,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:24:29,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:24:29,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,593 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,610 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:24:29,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:24:29,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:24:29,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:24:29,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:24:29,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (1/1) ... [2024-11-08 17:24:29,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:24:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:29,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:24:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:24:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:24:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:24:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:24:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:24:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:24:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:24:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:24:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:24:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:24:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:24:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:24:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:24:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:24:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:24:29,732 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 17:24:29,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:24:29,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:24:30,365 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:24:30,365 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:24:30,742 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:24:30,746 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 17:24:30,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:24:30 BoogieIcfgContainer [2024-11-08 17:24:30,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:24:30,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:24:30,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:24:30,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:24:30,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:24:29" (1/3) ... [2024-11-08 17:24:30,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446060a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:24:30, skipping insertion in model container [2024-11-08 17:24:30,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:24:29" (2/3) ... [2024-11-08 17:24:30,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446060a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:24:30, skipping insertion in model container [2024-11-08 17:24:30,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:24:30" (3/3) ... [2024-11-08 17:24:30,761 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-08 17:24:30,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:24:30,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-08 17:24:30,781 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:24:30,863 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:24:30,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 84 transitions, 182 flow [2024-11-08 17:24:30,958 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-08 17:24:30,959 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:24:30,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 12/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 250 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-08 17:24:30,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 84 transitions, 182 flow [2024-11-08 17:24:30,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 81 transitions, 174 flow [2024-11-08 17:24:30,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:24:30,986 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;@7ce46628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:24:30,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-08 17:24:30,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:24:30,991 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 17:24:30,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:24:30,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:30,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:24:30,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:30,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash 23387937, now seen corresponding path program 1 times [2024-11-08 17:24:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:31,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5850029] [2024-11-08 17:24:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:31,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:31,237 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 17:24:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5850029] [2024-11-08 17:24:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5850029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:31,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:31,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:24:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602471551] [2024-11-08 17:24:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:31,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:31,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:31,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 174 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 17:24:31,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:31,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:31,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:31,764 INFO L124 PetriNetUnfolderBase]: 596/1425 cut-off events. [2024-11-08 17:24:31,764 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-08 17:24:31,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1425 events. 596/1425 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9403 event pairs, 390 based on Foata normal form. 3/1103 useless extension candidates. Maximal degree in co-relation 2283. Up to 906 conditions per place. [2024-11-08 17:24:31,785 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 34 selfloop transitions, 4 changer transitions 2/76 dead transitions. [2024-11-08 17:24:31,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 242 flow [2024-11-08 17:24:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-08 17:24:31,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-08 17:24:31,805 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 174 flow. Second operand 4 states and 200 transitions. [2024-11-08 17:24:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 242 flow [2024-11-08 17:24:31,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:24:31,817 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 159 flow [2024-11-08 17:24:31,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-08 17:24:31,827 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-08 17:24:31,828 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 159 flow [2024-11-08 17:24:31,828 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 17:24:31,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:31,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 17:24:31,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:24:31,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:31,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 725026784, now seen corresponding path program 1 times [2024-11-08 17:24:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:31,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096859390] [2024-11-08 17:24:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:31,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:31,982 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 17:24:31,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:31,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096859390] [2024-11-08 17:24:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096859390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:31,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:31,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:24:31,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042929087] [2024-11-08 17:24:31,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:31,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:31,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:32,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:32,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 159 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 17:24:32,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:32,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:32,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:32,295 INFO L124 PetriNetUnfolderBase]: 598/1430 cut-off events. [2024-11-08 17:24:32,296 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-08 17:24:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 1430 events. 598/1430 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9415 event pairs, 390 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 2329. Up to 910 conditions per place. [2024-11-08 17:24:32,305 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-08 17:24:32,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 253 flow [2024-11-08 17:24:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-08 17:24:32,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-08 17:24:32,308 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 159 flow. Second operand 4 states and 198 transitions. [2024-11-08 17:24:32,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 253 flow [2024-11-08 17:24:32,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 239 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:32,312 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 178 flow [2024-11-08 17:24:32,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-11-08 17:24:32,313 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-08 17:24:32,313 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 178 flow [2024-11-08 17:24:32,313 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 17:24:32,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:32,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:32,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:24:32,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:32,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1416854459, now seen corresponding path program 1 times [2024-11-08 17:24:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141706478] [2024-11-08 17:24:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:32,465 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 17:24:32,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:32,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141706478] [2024-11-08 17:24:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141706478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:24:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633937951] [2024-11-08 17:24:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:32,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:24:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:24:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:24:32,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:32,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:32,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:32,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:32,810 INFO L124 PetriNetUnfolderBase]: 596/1427 cut-off events. [2024-11-08 17:24:32,811 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-08 17:24:32,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 1427 events. 596/1427 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9397 event pairs, 390 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 2346. Up to 910 conditions per place. [2024-11-08 17:24:32,823 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 39 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-11-08 17:24:32,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 255 flow [2024-11-08 17:24:32,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:24:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:24:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-08 17:24:32,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-08 17:24:32,828 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 178 flow. Second operand 3 states and 160 transitions. [2024-11-08 17:24:32,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 255 flow [2024-11-08 17:24:32,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 251 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 17:24:32,834 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 179 flow [2024-11-08 17:24:32,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-11-08 17:24:32,836 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-11-08 17:24:32,837 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 179 flow [2024-11-08 17:24:32,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:32,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:32,838 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 17:24:32,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:24:32,838 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:32,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash 672225480, now seen corresponding path program 1 times [2024-11-08 17:24:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705413044] [2024-11-08 17:24:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:24:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705413044] [2024-11-08 17:24:32,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705413044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817448096] [2024-11-08 17:24:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:32,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:32,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:32,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:24:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:33,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:24:33,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:24:33,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:24:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817448096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:33,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:33,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 17:24:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894995519] [2024-11-08 17:24:33,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:33,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:24:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:24:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:24:33,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:33,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 179 flow. Second operand has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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 17:24:33,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:33,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:33,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:33,632 INFO L124 PetriNetUnfolderBase]: 602/1448 cut-off events. [2024-11-08 17:24:33,633 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-08 17:24:33,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1448 events. 602/1448 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9529 event pairs, 390 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 2388. Up to 912 conditions per place. [2024-11-08 17:24:33,643 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-11-08 17:24:33,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 307 flow [2024-11-08 17:24:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:24:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:24:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 442 transitions. [2024-11-08 17:24:33,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2024-11-08 17:24:33,647 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 179 flow. Second operand 10 states and 442 transitions. [2024-11-08 17:24:33,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 307 flow [2024-11-08 17:24:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:24:33,652 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 247 flow [2024-11-08 17:24:33,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-11-08 17:24:33,655 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-08 17:24:33,656 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 247 flow [2024-11-08 17:24:33,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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 17:24:33,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:33,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:33,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:24:33,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:33,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:33,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1832495709, now seen corresponding path program 1 times [2024-11-08 17:24:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049212428] [2024-11-08 17:24:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:33,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:24:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049212428] [2024-11-08 17:24:33,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049212428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:33,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:24:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735639496] [2024-11-08 17:24:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:33,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:33,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:33,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 17:24:33,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:33,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:33,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:34,417 INFO L124 PetriNetUnfolderBase]: 1265/2905 cut-off events. [2024-11-08 17:24:34,417 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 17:24:34,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 2905 events. 1265/2905 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 21808 event pairs, 501 based on Foata normal form. 28/2340 useless extension candidates. Maximal degree in co-relation 4870. Up to 1090 conditions per place. [2024-11-08 17:24:34,434 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 95 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2024-11-08 17:24:34,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 542 flow [2024-11-08 17:24:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-11-08 17:24:34,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-08 17:24:34,436 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 247 flow. Second operand 4 states and 245 transitions. [2024-11-08 17:24:34,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 542 flow [2024-11-08 17:24:34,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 133 transitions, 522 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:34,441 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 249 flow [2024-11-08 17:24:34,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-11-08 17:24:34,442 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-11-08 17:24:34,442 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 249 flow [2024-11-08 17:24:34,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 17:24:34,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:34,442 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:34,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:24:34,443 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:34,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1939136569, now seen corresponding path program 1 times [2024-11-08 17:24:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:34,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532570489] [2024-11-08 17:24:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:24:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532570489] [2024-11-08 17:24:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532570489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:24:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848014528] [2024-11-08 17:24:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:34,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:34,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:34,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:34,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:34,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 17:24:34,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:34,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:34,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:35,279 INFO L124 PetriNetUnfolderBase]: 2398/5277 cut-off events. [2024-11-08 17:24:35,279 INFO L125 PetriNetUnfolderBase]: For 495/571 co-relation queries the response was YES. [2024-11-08 17:24:35,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 5277 events. 2398/5277 cut-off events. For 495/571 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 42705 event pairs, 1004 based on Foata normal form. 52/4372 useless extension candidates. Maximal degree in co-relation 9285. Up to 2070 conditions per place. [2024-11-08 17:24:35,312 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 98 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-11-08 17:24:35,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 579 flow [2024-11-08 17:24:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-08 17:24:35,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2024-11-08 17:24:35,314 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 249 flow. Second operand 4 states and 242 transitions. [2024-11-08 17:24:35,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 579 flow [2024-11-08 17:24:35,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:24:35,322 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 269 flow [2024-11-08 17:24:35,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-11-08 17:24:35,324 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2024-11-08 17:24:35,325 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 269 flow [2024-11-08 17:24:35,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 17:24:35,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:35,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:35,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:24:35,326 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:35,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:35,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1449925444, now seen corresponding path program 1 times [2024-11-08 17:24:35,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:35,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887311984] [2024-11-08 17:24:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:35,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:24:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:35,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887311984] [2024-11-08 17:24:35,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887311984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:35,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:35,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:24:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195807544] [2024-11-08 17:24:35,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:35,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:35,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:35,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:35,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 84 [2024-11-08 17:24:35,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 17:24:35,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:35,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 84 [2024-11-08 17:24:35,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:36,091 INFO L124 PetriNetUnfolderBase]: 1924/4121 cut-off events. [2024-11-08 17:24:36,092 INFO L125 PetriNetUnfolderBase]: For 622/690 co-relation queries the response was YES. [2024-11-08 17:24:36,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7875 conditions, 4121 events. 1924/4121 cut-off events. For 622/690 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 31033 event pairs, 764 based on Foata normal form. 0/3585 useless extension candidates. Maximal degree in co-relation 7840. Up to 1638 conditions per place. [2024-11-08 17:24:36,126 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 107 selfloop transitions, 4 changer transitions 6/154 dead transitions. [2024-11-08 17:24:36,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 154 transitions, 680 flow [2024-11-08 17:24:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 304 transitions. [2024-11-08 17:24:36,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-08 17:24:36,128 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 269 flow. Second operand 5 states and 304 transitions. [2024-11-08 17:24:36,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 154 transitions, 680 flow [2024-11-08 17:24:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:24:36,135 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 292 flow [2024-11-08 17:24:36,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-11-08 17:24:36,136 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2024-11-08 17:24:36,136 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 292 flow [2024-11-08 17:24:36,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 17:24:36,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:36,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:36,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:24:36,138 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:36,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1963646155, now seen corresponding path program 1 times [2024-11-08 17:24:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029089940] [2024-11-08 17:24:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:24:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029089940] [2024-11-08 17:24:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029089940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:36,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640119628] [2024-11-08 17:24:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:36,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:36,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:36,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:24:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:36,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:24:36,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:24:36,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:24:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640119628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:36,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:36,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 17:24:36,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758549798] [2024-11-08 17:24:36,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:36,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:24:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:24:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:24:36,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:36,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 292 flow. Second operand has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 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 17:24:36,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:36,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:37,334 INFO L124 PetriNetUnfolderBase]: 1836/4351 cut-off events. [2024-11-08 17:24:37,334 INFO L125 PetriNetUnfolderBase]: For 1236/1278 co-relation queries the response was YES. [2024-11-08 17:24:37,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8460 conditions, 4351 events. 1836/4351 cut-off events. For 1236/1278 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35081 event pairs, 1377 based on Foata normal form. 6/3735 useless extension candidates. Maximal degree in co-relation 8421. Up to 2869 conditions per place. [2024-11-08 17:24:37,363 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-11-08 17:24:37,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 91 transitions, 402 flow [2024-11-08 17:24:37,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:24:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:24:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2024-11-08 17:24:37,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-11-08 17:24:37,366 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 292 flow. Second operand 7 states and 303 transitions. [2024-11-08 17:24:37,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 91 transitions, 402 flow [2024-11-08 17:24:37,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 91 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:24:37,371 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 318 flow [2024-11-08 17:24:37,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-11-08 17:24:37,372 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 29 predicate places. [2024-11-08 17:24:37,372 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 318 flow [2024-11-08 17:24:37,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 11 states have internal predecessors, (417), 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 17:24:37,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:37,373 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 17:24:37,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:24:37,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:37,578 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:37,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2117604224, now seen corresponding path program 2 times [2024-11-08 17:24:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:37,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204381001] [2024-11-08 17:24:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:24:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204381001] [2024-11-08 17:24:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204381001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:37,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:37,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:24:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810013880] [2024-11-08 17:24:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:37,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:24:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:24:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:24:37,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:37,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 318 flow. Second operand has 9 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 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 17:24:37,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:37,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:37,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:38,703 INFO L124 PetriNetUnfolderBase]: 1834/4340 cut-off events. [2024-11-08 17:24:38,703 INFO L125 PetriNetUnfolderBase]: For 1241/1283 co-relation queries the response was YES. [2024-11-08 17:24:38,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8445 conditions, 4340 events. 1834/4340 cut-off events. For 1241/1283 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 35022 event pairs, 1377 based on Foata normal form. 1/3719 useless extension candidates. Maximal degree in co-relation 8427. Up to 2863 conditions per place. [2024-11-08 17:24:38,730 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 43 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2024-11-08 17:24:38,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 84 transitions, 380 flow [2024-11-08 17:24:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:24:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:24:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 370 transitions. [2024-11-08 17:24:38,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2024-11-08 17:24:38,732 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 318 flow. Second operand 9 states and 370 transitions. [2024-11-08 17:24:38,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 84 transitions, 380 flow [2024-11-08 17:24:38,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 84 transitions, 358 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-08 17:24:38,738 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 264 flow [2024-11-08 17:24:38,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-11-08 17:24:38,739 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-08 17:24:38,740 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 264 flow [2024-11-08 17:24:38,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.666666666666664) internal successors, (339), 9 states have internal predecessors, (339), 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 17:24:38,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:38,741 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:38,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:24:38,742 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:38,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -739019931, now seen corresponding path program 2 times [2024-11-08 17:24:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:38,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784077393] [2024-11-08 17:24:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:38,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784077393] [2024-11-08 17:24:38,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784077393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942357815] [2024-11-08 17:24:38,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:24:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:38,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:38,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:24:38,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:24:38,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:24:38,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:24:38,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:39,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942357815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:39,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:39,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-08 17:24:39,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456102191] [2024-11-08 17:24:39,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:39,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:24:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:39,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:24:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:24:39,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-08 17:24:39,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 17:24:39,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:39,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-08 17:24:39,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:39,662 INFO L124 PetriNetUnfolderBase]: 2113/4597 cut-off events. [2024-11-08 17:24:39,662 INFO L125 PetriNetUnfolderBase]: For 1140/1172 co-relation queries the response was YES. [2024-11-08 17:24:39,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9165 conditions, 4597 events. 2113/4597 cut-off events. For 1140/1172 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 35318 event pairs, 1271 based on Foata normal form. 52/3989 useless extension candidates. Maximal degree in co-relation 9151. Up to 2623 conditions per place. [2024-11-08 17:24:39,685 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 63 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-08 17:24:39,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 447 flow [2024-11-08 17:24:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-08 17:24:39,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6220238095238095 [2024-11-08 17:24:39,687 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 264 flow. Second operand 4 states and 209 transitions. [2024-11-08 17:24:39,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 447 flow [2024-11-08 17:24:39,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 431 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:24:39,694 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 254 flow [2024-11-08 17:24:39,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-11-08 17:24:39,697 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2024-11-08 17:24:39,697 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 254 flow [2024-11-08 17:24:39,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 17:24:39,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:39,697 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:39,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:39,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:39,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:39,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2096016673, now seen corresponding path program 1 times [2024-11-08 17:24:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:39,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860529582] [2024-11-08 17:24:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:39,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:39,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:39,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860529582] [2024-11-08 17:24:39,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860529582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:39,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:39,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:24:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706129249] [2024-11-08 17:24:39,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:39,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:39,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:24:39,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 84 [2024-11-08 17:24:39,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 17:24:39,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:39,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 84 [2024-11-08 17:24:39,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:40,606 INFO L124 PetriNetUnfolderBase]: 1565/3450 cut-off events. [2024-11-08 17:24:40,607 INFO L125 PetriNetUnfolderBase]: For 1664/1718 co-relation queries the response was YES. [2024-11-08 17:24:40,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 3450 events. 1565/3450 cut-off events. For 1664/1718 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 24323 event pairs, 711 based on Foata normal form. 0/3090 useless extension candidates. Maximal degree in co-relation 7231. Up to 1458 conditions per place. [2024-11-08 17:24:40,631 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 97 selfloop transitions, 4 changer transitions 12/147 dead transitions. [2024-11-08 17:24:40,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 738 flow [2024-11-08 17:24:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2024-11-08 17:24:40,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7119047619047619 [2024-11-08 17:24:40,633 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 254 flow. Second operand 5 states and 299 transitions. [2024-11-08 17:24:40,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 738 flow [2024-11-08 17:24:40,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 704 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:40,640 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 269 flow [2024-11-08 17:24:40,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-08 17:24:40,641 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-08 17:24:40,641 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 269 flow [2024-11-08 17:24:40,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 17:24:40,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:40,642 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:40,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:24:40,642 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:40,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1434780559, now seen corresponding path program 1 times [2024-11-08 17:24:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168737809] [2024-11-08 17:24:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:40,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168737809] [2024-11-08 17:24:40,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168737809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:40,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:24:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629304829] [2024-11-08 17:24:40,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:40,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:24:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:24:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:24:40,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:40,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 17:24:40,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:40,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:40,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:41,362 INFO L124 PetriNetUnfolderBase]: 1535/3553 cut-off events. [2024-11-08 17:24:41,362 INFO L125 PetriNetUnfolderBase]: For 1833/1857 co-relation queries the response was YES. [2024-11-08 17:24:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 3553 events. 1535/3553 cut-off events. For 1833/1857 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 25917 event pairs, 1140 based on Foata normal form. 0/3188 useless extension candidates. Maximal degree in co-relation 7590. Up to 2256 conditions per place. [2024-11-08 17:24:41,389 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 66 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-08 17:24:41,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 103 transitions, 481 flow [2024-11-08 17:24:41,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:24:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:24:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-08 17:24:41,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-08 17:24:41,391 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 269 flow. Second operand 3 states and 172 transitions. [2024-11-08 17:24:41,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 103 transitions, 481 flow [2024-11-08 17:24:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 481 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:24:41,400 INFO L231 Difference]: Finished difference. Result has 99 places, 82 transitions, 273 flow [2024-11-08 17:24:41,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=99, PETRI_TRANSITIONS=82} [2024-11-08 17:24:41,403 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2024-11-08 17:24:41,403 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 82 transitions, 273 flow [2024-11-08 17:24:41,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 17:24:41,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:41,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:41,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:24:41,405 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:41,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash 586377103, now seen corresponding path program 1 times [2024-11-08 17:24:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:41,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417809743] [2024-11-08 17:24:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:41,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417809743] [2024-11-08 17:24:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417809743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580031248] [2024-11-08 17:24:41,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:41,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:41,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:41,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:41,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:24:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:41,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:24:41,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:41,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580031248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 17:24:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053185778] [2024-11-08 17:24:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:41,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:24:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:24:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:41,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:41,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 82 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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 17:24:41,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:41,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:41,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:42,310 INFO L124 PetriNetUnfolderBase]: 1666/3469 cut-off events. [2024-11-08 17:24:42,311 INFO L125 PetriNetUnfolderBase]: For 2244/2244 co-relation queries the response was YES. [2024-11-08 17:24:42,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7978 conditions, 3469 events. 1666/3469 cut-off events. For 2244/2244 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 23478 event pairs, 77 based on Foata normal form. 47/3210 useless extension candidates. Maximal degree in co-relation 7961. Up to 1461 conditions per place. [2024-11-08 17:24:42,332 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 128 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-11-08 17:24:42,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 869 flow [2024-11-08 17:24:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:24:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:24:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-08 17:24:42,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-08 17:24:42,335 INFO L175 Difference]: Start difference. First operand has 99 places, 82 transitions, 273 flow. Second operand 6 states and 344 transitions. [2024-11-08 17:24:42,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 164 transitions, 869 flow [2024-11-08 17:24:42,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 829 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:24:42,343 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 271 flow [2024-11-08 17:24:42,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-11-08 17:24:42,345 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-08 17:24:42,345 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 271 flow [2024-11-08 17:24:42,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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 17:24:42,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:42,346 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:42,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:42,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:42,548 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:42,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 997821862, now seen corresponding path program 1 times [2024-11-08 17:24:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59421988] [2024-11-08 17:24:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:42,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59421988] [2024-11-08 17:24:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59421988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:42,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:24:42,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:24:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390504412] [2024-11-08 17:24:42,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:42,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:24:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:24:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:24:42,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-08 17:24:42,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 17:24:42,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:42,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-08 17:24:42,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:43,166 INFO L124 PetriNetUnfolderBase]: 1535/3499 cut-off events. [2024-11-08 17:24:43,166 INFO L125 PetriNetUnfolderBase]: For 2500/2500 co-relation queries the response was YES. [2024-11-08 17:24:43,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7732 conditions, 3499 events. 1535/3499 cut-off events. For 2500/2500 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 25091 event pairs, 1138 based on Foata normal form. 47/3181 useless extension candidates. Maximal degree in co-relation 7715. Up to 2252 conditions per place. [2024-11-08 17:24:43,195 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 65 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-11-08 17:24:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 479 flow [2024-11-08 17:24:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:24:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:24:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-08 17:24:43,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-11-08 17:24:43,197 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 271 flow. Second operand 3 states and 171 transitions. [2024-11-08 17:24:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 479 flow [2024-11-08 17:24:43,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 466 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-08 17:24:43,204 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 262 flow [2024-11-08 17:24:43,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-11-08 17:24:43,205 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2024-11-08 17:24:43,205 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 262 flow [2024-11-08 17:24:43,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 17:24:43,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:43,205 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:43,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:24:43,205 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:43,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -140697932, now seen corresponding path program 1 times [2024-11-08 17:24:43,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:43,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509131779] [2024-11-08 17:24:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:43,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509131779] [2024-11-08 17:24:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509131779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379591087] [2024-11-08 17:24:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:43,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:43,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:43,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:24:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:43,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:43,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:43,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:43,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379591087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:43,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:43,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:43,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138000217] [2024-11-08 17:24:43,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:43,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:43,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:43,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:43,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:43,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 17:24:43,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:43,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:43,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:44,120 INFO L124 PetriNetUnfolderBase]: 2047/4473 cut-off events. [2024-11-08 17:24:44,120 INFO L125 PetriNetUnfolderBase]: For 2384/2384 co-relation queries the response was YES. [2024-11-08 17:24:44,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9685 conditions, 4473 events. 2047/4473 cut-off events. For 2384/2384 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 32735 event pairs, 1242 based on Foata normal form. 92/4092 useless extension candidates. Maximal degree in co-relation 9670. Up to 2430 conditions per place. [2024-11-08 17:24:44,150 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 114 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-11-08 17:24:44,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 751 flow [2024-11-08 17:24:44,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 279 transitions. [2024-11-08 17:24:44,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-08 17:24:44,152 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 262 flow. Second operand 5 states and 279 transitions. [2024-11-08 17:24:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 751 flow [2024-11-08 17:24:44,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 146 transitions, 719 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:24:44,159 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 290 flow [2024-11-08 17:24:44,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-11-08 17:24:44,160 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2024-11-08 17:24:44,160 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 290 flow [2024-11-08 17:24:44,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 17:24:44,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:44,161 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:44,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:44,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:24:44,362 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:44,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:44,362 INFO L85 PathProgramCache]: Analyzing trace with hash -66667767, now seen corresponding path program 1 times [2024-11-08 17:24:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:44,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315289211] [2024-11-08 17:24:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:44,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315289211] [2024-11-08 17:24:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315289211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122536413] [2024-11-08 17:24:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:44,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:44,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:44,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:24:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:44,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:24:44,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:44,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:44,610 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122536413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:44,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:44,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-08 17:24:44,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864507487] [2024-11-08 17:24:44,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:44,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:44,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-08 17:24:44,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 17:24:44,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:44,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-08 17:24:44,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:45,182 INFO L124 PetriNetUnfolderBase]: 1833/4173 cut-off events. [2024-11-08 17:24:45,183 INFO L125 PetriNetUnfolderBase]: For 2502/2506 co-relation queries the response was YES. [2024-11-08 17:24:45,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9368 conditions, 4173 events. 1833/4173 cut-off events. For 2502/2506 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30820 event pairs, 1060 based on Foata normal form. 50/3866 useless extension candidates. Maximal degree in co-relation 9351. Up to 2021 conditions per place. [2024-11-08 17:24:45,206 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 69 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-08 17:24:45,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 507 flow [2024-11-08 17:24:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-11-08 17:24:45,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-08 17:24:45,208 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 290 flow. Second operand 4 states and 208 transitions. [2024-11-08 17:24:45,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 102 transitions, 507 flow [2024-11-08 17:24:45,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 102 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:24:45,219 INFO L231 Difference]: Finished difference. Result has 102 places, 81 transitions, 294 flow [2024-11-08 17:24:45,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2024-11-08 17:24:45,219 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2024-11-08 17:24:45,220 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 294 flow [2024-11-08 17:24:45,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 17:24:45,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:45,220 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:45,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:45,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:24:45,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:45,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1128020617, now seen corresponding path program 1 times [2024-11-08 17:24:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:45,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302174408] [2024-11-08 17:24:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302174408] [2024-11-08 17:24:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302174408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399819100] [2024-11-08 17:24:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:45,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:45,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:24:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:45,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:45,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:45,686 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:45,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399819100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:45,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:45,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731473446] [2024-11-08 17:24:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:45,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:45,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:45,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 17:24:45,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:45,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:46,407 INFO L124 PetriNetUnfolderBase]: 2331/5065 cut-off events. [2024-11-08 17:24:46,407 INFO L125 PetriNetUnfolderBase]: For 3333/3385 co-relation queries the response was YES. [2024-11-08 17:24:46,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11462 conditions, 5065 events. 2331/5065 cut-off events. For 3333/3385 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 37834 event pairs, 1422 based on Foata normal form. 130/4735 useless extension candidates. Maximal degree in co-relation 11444. Up to 2756 conditions per place. [2024-11-08 17:24:46,440 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 119 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-08 17:24:46,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 150 transitions, 862 flow [2024-11-08 17:24:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2024-11-08 17:24:46,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-08 17:24:46,442 INFO L175 Difference]: Start difference. First operand has 102 places, 81 transitions, 294 flow. Second operand 5 states and 276 transitions. [2024-11-08 17:24:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 150 transitions, 862 flow [2024-11-08 17:24:46,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 836 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:46,456 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 322 flow [2024-11-08 17:24:46,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-11-08 17:24:46,456 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 29 predicate places. [2024-11-08 17:24:46,457 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 322 flow [2024-11-08 17:24:46,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 17:24:46,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:46,457 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:46,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:24:46,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:24:46,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:46,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:46,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2066731720, now seen corresponding path program 1 times [2024-11-08 17:24:46,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160695365] [2024-11-08 17:24:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160695365] [2024-11-08 17:24:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160695365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691409869] [2024-11-08 17:24:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:46,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:46,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:46,798 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:46,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:24:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:46,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:24:46,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:46,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691409869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:46,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-08 17:24:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757245541] [2024-11-08 17:24:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:46,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:47,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-08 17:24:47,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:47,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:47,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-08 17:24:47,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:47,695 INFO L124 PetriNetUnfolderBase]: 2087/4797 cut-off events. [2024-11-08 17:24:47,695 INFO L125 PetriNetUnfolderBase]: For 3582/3608 co-relation queries the response was YES. [2024-11-08 17:24:47,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11211 conditions, 4797 events. 2087/4797 cut-off events. For 3582/3608 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 36759 event pairs, 1204 based on Foata normal form. 64/4517 useless extension candidates. Maximal degree in co-relation 11191. Up to 2296 conditions per place. [2024-11-08 17:24:47,726 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 74 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-08 17:24:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 572 flow [2024-11-08 17:24:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-08 17:24:47,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-08 17:24:47,728 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 322 flow. Second operand 4 states and 204 transitions. [2024-11-08 17:24:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 572 flow [2024-11-08 17:24:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:24:47,747 INFO L231 Difference]: Finished difference. Result has 106 places, 82 transitions, 324 flow [2024-11-08 17:24:47,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2024-11-08 17:24:47,747 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2024-11-08 17:24:47,747 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 324 flow [2024-11-08 17:24:47,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:47,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:47,748 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:47,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:47,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:24:47,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:47,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:47,949 INFO L85 PathProgramCache]: Analyzing trace with hash 608901619, now seen corresponding path program 1 times [2024-11-08 17:24:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:47,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931176252] [2024-11-08 17:24:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931176252] [2024-11-08 17:24:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931176252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409199827] [2024-11-08 17:24:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:48,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:48,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:48,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:24:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:48,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:24:48,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:48,300 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409199827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:48,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-08 17:24:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829714664] [2024-11-08 17:24:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:48,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:48,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-08 17:24:48,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 82 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 17:24:48,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:48,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-08 17:24:48,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:48,782 INFO L124 PetriNetUnfolderBase]: 2088/4723 cut-off events. [2024-11-08 17:24:48,782 INFO L125 PetriNetUnfolderBase]: For 3750/3772 co-relation queries the response was YES. [2024-11-08 17:24:48,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11219 conditions, 4723 events. 2088/4723 cut-off events. For 3750/3772 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 35762 event pairs, 1199 based on Foata normal form. 73/4450 useless extension candidates. Maximal degree in co-relation 11198. Up to 2304 conditions per place. [2024-11-08 17:24:48,803 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 72 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-08 17:24:48,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 578 flow [2024-11-08 17:24:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-08 17:24:48,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-08 17:24:48,805 INFO L175 Difference]: Start difference. First operand has 106 places, 82 transitions, 324 flow. Second operand 4 states and 207 transitions. [2024-11-08 17:24:48,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 578 flow [2024-11-08 17:24:48,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 103 transitions, 564 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:48,818 INFO L231 Difference]: Finished difference. Result has 105 places, 81 transitions, 322 flow [2024-11-08 17:24:48,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=105, PETRI_TRANSITIONS=81} [2024-11-08 17:24:48,818 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 29 predicate places. [2024-11-08 17:24:48,819 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 81 transitions, 322 flow [2024-11-08 17:24:48,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 17:24:48,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:48,819 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:48,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:49,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:49,020 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:49,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash 355825931, now seen corresponding path program 1 times [2024-11-08 17:24:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:49,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759548390] [2024-11-08 17:24:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759548390] [2024-11-08 17:24:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759548390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299630789] [2024-11-08 17:24:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:49,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:49,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:24:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:49,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:24:49,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:49,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299630789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-08 17:24:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979456845] [2024-11-08 17:24:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:49,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:24:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:24:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:24:49,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-08 17:24:49,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 81 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 17:24:49,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:49,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-08 17:24:49,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:49,980 INFO L124 PetriNetUnfolderBase]: 2189/4880 cut-off events. [2024-11-08 17:24:49,980 INFO L125 PetriNetUnfolderBase]: For 3934/3958 co-relation queries the response was YES. [2024-11-08 17:24:49,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 4880 events. 2189/4880 cut-off events. For 3934/3958 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 36483 event pairs, 1547 based on Foata normal form. 114/4718 useless extension candidates. Maximal degree in co-relation 11619. Up to 2931 conditions per place. [2024-11-08 17:24:50,001 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 120 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-08 17:24:50,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 150 transitions, 879 flow [2024-11-08 17:24:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:24:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:24:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2024-11-08 17:24:50,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-08 17:24:50,003 INFO L175 Difference]: Start difference. First operand has 105 places, 81 transitions, 322 flow. Second operand 6 states and 306 transitions. [2024-11-08 17:24:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 150 transitions, 879 flow [2024-11-08 17:24:50,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 150 transitions, 850 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:24:50,017 INFO L231 Difference]: Finished difference. Result has 107 places, 80 transitions, 321 flow [2024-11-08 17:24:50,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=107, PETRI_TRANSITIONS=80} [2024-11-08 17:24:50,017 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 31 predicate places. [2024-11-08 17:24:50,017 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 80 transitions, 321 flow [2024-11-08 17:24:50,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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 17:24:50,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:50,018 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:50,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:50,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:50,218 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:50,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:50,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1696050093, now seen corresponding path program 1 times [2024-11-08 17:24:50,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:50,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162468281] [2024-11-08 17:24:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162468281] [2024-11-08 17:24:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162468281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442903565] [2024-11-08 17:24:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:50,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:50,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:24:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:50,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:24:50,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:50,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442903565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-08 17:24:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971547062] [2024-11-08 17:24:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:50,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:50,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:50,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:50,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-08 17:24:50,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 80 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 17:24:50,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:50,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-08 17:24:50,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:50,985 INFO L124 PetriNetUnfolderBase]: 2062/4620 cut-off events. [2024-11-08 17:24:50,985 INFO L125 PetriNetUnfolderBase]: For 3889/3911 co-relation queries the response was YES. [2024-11-08 17:24:50,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 4620 events. 2062/4620 cut-off events. For 3889/3911 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 34520 event pairs, 1199 based on Foata normal form. 73/4409 useless extension candidates. Maximal degree in co-relation 11105. Up to 2304 conditions per place. [2024-11-08 17:24:51,004 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 73 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-11-08 17:24:51,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 576 flow [2024-11-08 17:24:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-08 17:24:51,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-08 17:24:51,006 INFO L175 Difference]: Start difference. First operand has 107 places, 80 transitions, 321 flow. Second operand 4 states and 203 transitions. [2024-11-08 17:24:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 576 flow [2024-11-08 17:24:51,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 558 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:24:51,018 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 314 flow [2024-11-08 17:24:51,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2024-11-08 17:24:51,018 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 29 predicate places. [2024-11-08 17:24:51,018 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 314 flow [2024-11-08 17:24:51,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 17:24:51,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:51,019 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:51,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:24:51,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:51,219 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:51,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:51,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1854297189, now seen corresponding path program 1 times [2024-11-08 17:24:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:51,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395977427] [2024-11-08 17:24:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:51,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395977427] [2024-11-08 17:24:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395977427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:51,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094858326] [2024-11-08 17:24:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:51,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:51,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:51,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:51,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:24:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:51,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:24:51,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:51,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094858326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:51,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-08 17:24:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176744005] [2024-11-08 17:24:51,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:24:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:24:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:24:51,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-08 17:24:51,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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 17:24:51,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:51,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-08 17:24:51,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:52,361 INFO L124 PetriNetUnfolderBase]: 2424/5130 cut-off events. [2024-11-08 17:24:52,362 INFO L125 PetriNetUnfolderBase]: For 4268/4292 co-relation queries the response was YES. [2024-11-08 17:24:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 5130 events. 2424/5130 cut-off events. For 4268/4292 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 37289 event pairs, 1200 based on Foata normal form. 124/5054 useless extension candidates. Maximal degree in co-relation 12534. Up to 2346 conditions per place. [2024-11-08 17:24:52,383 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 139 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2024-11-08 17:24:52,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 173 transitions, 1034 flow [2024-11-08 17:24:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:24:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:24:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 356 transitions. [2024-11-08 17:24:52,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-11-08 17:24:52,385 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 314 flow. Second operand 7 states and 356 transitions. [2024-11-08 17:24:52,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 173 transitions, 1034 flow [2024-11-08 17:24:52,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 173 transitions, 1002 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:52,406 INFO L231 Difference]: Finished difference. Result has 110 places, 81 transitions, 346 flow [2024-11-08 17:24:52,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=110, PETRI_TRANSITIONS=81} [2024-11-08 17:24:52,407 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2024-11-08 17:24:52,407 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 81 transitions, 346 flow [2024-11-08 17:24:52,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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 17:24:52,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:52,408 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:52,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:52,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:52,612 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:52,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1037946198, now seen corresponding path program 1 times [2024-11-08 17:24:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374949314] [2024-11-08 17:24:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374949314] [2024-11-08 17:24:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374949314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686562405] [2024-11-08 17:24:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:52,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:52,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:52,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:52,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:24:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:52,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:52,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:52,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686562405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:52,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511806968] [2024-11-08 17:24:52,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:52,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:52,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:52,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 81 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 17:24:52,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:52,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:52,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:53,551 INFO L124 PetriNetUnfolderBase]: 2211/4901 cut-off events. [2024-11-08 17:24:53,551 INFO L125 PetriNetUnfolderBase]: For 4989/5055 co-relation queries the response was YES. [2024-11-08 17:24:53,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 4901 events. 2211/4901 cut-off events. For 4989/5055 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 36719 event pairs, 1592 based on Foata normal form. 113/4758 useless extension candidates. Maximal degree in co-relation 12480. Up to 3002 conditions per place. [2024-11-08 17:24:53,665 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 125 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-08 17:24:53,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 153 transitions, 986 flow [2024-11-08 17:24:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 271 transitions. [2024-11-08 17:24:53,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6452380952380953 [2024-11-08 17:24:53,668 INFO L175 Difference]: Start difference. First operand has 110 places, 81 transitions, 346 flow. Second operand 5 states and 271 transitions. [2024-11-08 17:24:53,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 153 transitions, 986 flow [2024-11-08 17:24:53,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 153 transitions, 951 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:24:53,692 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 336 flow [2024-11-08 17:24:53,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2024-11-08 17:24:53,693 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2024-11-08 17:24:53,693 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 336 flow [2024-11-08 17:24:53,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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 17:24:53,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:53,694 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:53,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:24:53,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 17:24:53,895 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:53,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1037945173, now seen corresponding path program 1 times [2024-11-08 17:24:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795834350] [2024-11-08 17:24:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795834350] [2024-11-08 17:24:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795834350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:54,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957716542] [2024-11-08 17:24:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:54,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:54,010 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:54,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:24:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:54,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:24:54,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:54,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:54,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957716542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:54,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:54,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-08 17:24:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330270740] [2024-11-08 17:24:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:54,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:24:54,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:54,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:24:54,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:24:54,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-08 17:24:54,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:54,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:54,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-08 17:24:54,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:54,923 INFO L124 PetriNetUnfolderBase]: 2293/4932 cut-off events. [2024-11-08 17:24:54,923 INFO L125 PetriNetUnfolderBase]: For 4869/4943 co-relation queries the response was YES. [2024-11-08 17:24:54,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 4932 events. 2293/4932 cut-off events. For 4869/4943 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 36052 event pairs, 1668 based on Foata normal form. 119/4899 useless extension candidates. Maximal degree in co-relation 12618. Up to 3136 conditions per place. [2024-11-08 17:24:54,944 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 125 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-11-08 17:24:54,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 153 transitions, 963 flow [2024-11-08 17:24:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:24:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:24:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-11-08 17:24:54,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-11-08 17:24:54,946 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 336 flow. Second operand 6 states and 302 transitions. [2024-11-08 17:24:54,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 153 transitions, 963 flow [2024-11-08 17:24:54,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 153 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:54,977 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 343 flow [2024-11-08 17:24:54,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2024-11-08 17:24:54,978 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 37 predicate places. [2024-11-08 17:24:54,978 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 343 flow [2024-11-08 17:24:54,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:54,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:54,978 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:54,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:55,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 17:24:55,182 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:55,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -701320079, now seen corresponding path program 1 times [2024-11-08 17:24:55,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:55,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94324679] [2024-11-08 17:24:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:55,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94324679] [2024-11-08 17:24:55,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94324679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037272610] [2024-11-08 17:24:55,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:55,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:55,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:55,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:55,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:24:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:55,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:55,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:55,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:55,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037272610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:55,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:55,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:55,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735113027] [2024-11-08 17:24:55,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:55,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:55,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:55,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:55,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:55,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:24:55,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 17:24:55,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:55,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:24:55,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:56,054 INFO L124 PetriNetUnfolderBase]: 2220/4833 cut-off events. [2024-11-08 17:24:56,055 INFO L125 PetriNetUnfolderBase]: For 5016/5054 co-relation queries the response was YES. [2024-11-08 17:24:56,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 4833 events. 2220/4833 cut-off events. For 5016/5054 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 35483 event pairs, 1469 based on Foata normal form. 88/4793 useless extension candidates. Maximal degree in co-relation 12397. Up to 2844 conditions per place. [2024-11-08 17:24:56,070 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 119 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2024-11-08 17:24:56,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 148 transitions, 902 flow [2024-11-08 17:24:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:24:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:24:56,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2024-11-08 17:24:56,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-11-08 17:24:56,072 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 343 flow. Second operand 5 states and 272 transitions. [2024-11-08 17:24:56,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 148 transitions, 902 flow [2024-11-08 17:24:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 148 transitions, 863 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:24:56,093 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 334 flow [2024-11-08 17:24:56,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2024-11-08 17:24:56,094 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2024-11-08 17:24:56,094 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 334 flow [2024-11-08 17:24:56,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 17:24:56,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:56,095 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:56,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 17:24:56,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 17:24:56,295 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:56,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -701321104, now seen corresponding path program 1 times [2024-11-08 17:24:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:56,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942925995] [2024-11-08 17:24:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:56,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:56,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942925995] [2024-11-08 17:24:56,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942925995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:56,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996777073] [2024-11-08 17:24:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:56,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:56,386 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:56,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:24:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:56,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:56,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:56,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996777073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934524999] [2024-11-08 17:24:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:56,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:56,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:56,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-08 17:24:56,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 17:24:56,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:56,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-08 17:24:56,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:57,066 INFO L124 PetriNetUnfolderBase]: 2462/5036 cut-off events. [2024-11-08 17:24:57,066 INFO L125 PetriNetUnfolderBase]: For 4542/4573 co-relation queries the response was YES. [2024-11-08 17:24:57,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13221 conditions, 5036 events. 2462/5036 cut-off events. For 4542/4573 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 35395 event pairs, 1623 based on Foata normal form. 81/4974 useless extension candidates. Maximal degree in co-relation 13198. Up to 3113 conditions per place. [2024-11-08 17:24:57,087 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 94 selfloop transitions, 6 changer transitions 6/126 dead transitions. [2024-11-08 17:24:57,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 746 flow [2024-11-08 17:24:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-08 17:24:57,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2024-11-08 17:24:57,088 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 334 flow. Second operand 4 states and 226 transitions. [2024-11-08 17:24:57,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 746 flow [2024-11-08 17:24:57,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 126 transitions, 724 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-08 17:24:57,108 INFO L231 Difference]: Finished difference. Result has 108 places, 79 transitions, 331 flow [2024-11-08 17:24:57,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2024-11-08 17:24:57,108 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 32 predicate places. [2024-11-08 17:24:57,109 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 331 flow [2024-11-08 17:24:57,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 17:24:57,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:57,109 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:57,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:57,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 17:24:57,313 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:57,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2111530160, now seen corresponding path program 1 times [2024-11-08 17:24:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019880506] [2024-11-08 17:24:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:57,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019880506] [2024-11-08 17:24:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019880506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677116370] [2024-11-08 17:24:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:57,415 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:57,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:24:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:57,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:24:57,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:57,632 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677116370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:57,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-08 17:24:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128918033] [2024-11-08 17:24:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:57,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:24:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:57,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:24:57,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:24:57,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 84 [2024-11-08 17:24:57,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 17:24:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 84 [2024-11-08 17:24:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:58,431 INFO L124 PetriNetUnfolderBase]: 2539/5194 cut-off events. [2024-11-08 17:24:58,431 INFO L125 PetriNetUnfolderBase]: For 5367/5443 co-relation queries the response was YES. [2024-11-08 17:24:58,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13625 conditions, 5194 events. 2539/5194 cut-off events. For 5367/5443 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 36794 event pairs, 1288 based on Foata normal form. 160/5257 useless extension candidates. Maximal degree in co-relation 13603. Up to 2514 conditions per place. [2024-11-08 17:24:58,449 INFO L140 encePairwiseOnDemand]: 75/84 looper letters, 145 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2024-11-08 17:24:58,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 177 transitions, 1147 flow [2024-11-08 17:24:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:24:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:24:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions. [2024-11-08 17:24:58,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-08 17:24:58,451 INFO L175 Difference]: Start difference. First operand has 108 places, 79 transitions, 331 flow. Second operand 7 states and 352 transitions. [2024-11-08 17:24:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 177 transitions, 1147 flow [2024-11-08 17:24:58,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 177 transitions, 1089 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-08 17:24:58,467 INFO L231 Difference]: Finished difference. Result has 113 places, 81 transitions, 357 flow [2024-11-08 17:24:58,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=113, PETRI_TRANSITIONS=81} [2024-11-08 17:24:58,467 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 37 predicate places. [2024-11-08 17:24:58,467 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 81 transitions, 357 flow [2024-11-08 17:24:58,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 17:24:58,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:58,468 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:58,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 17:24:58,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:24:58,668 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:58,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 462383990, now seen corresponding path program 1 times [2024-11-08 17:24:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292414469] [2024-11-08 17:24:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:58,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292414469] [2024-11-08 17:24:58,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292414469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546451878] [2024-11-08 17:24:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:58,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:58,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:58,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:58,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:24:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:58,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:24:58,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:24:58,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:24:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546451878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:24:58,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:24:58,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:24:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360479913] [2024-11-08 17:24:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:24:58,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:24:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:24:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:24:58,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-08 17:24:58,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 81 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 17:24:58,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:24:58,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-08 17:24:58,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:24:59,520 INFO L124 PetriNetUnfolderBase]: 2373/4995 cut-off events. [2024-11-08 17:24:59,521 INFO L125 PetriNetUnfolderBase]: For 5411/5455 co-relation queries the response was YES. [2024-11-08 17:24:59,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13656 conditions, 4995 events. 2373/4995 cut-off events. For 5411/5455 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 35969 event pairs, 1896 based on Foata normal form. 90/4981 useless extension candidates. Maximal degree in co-relation 13632. Up to 3595 conditions per place. [2024-11-08 17:24:59,555 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 84 selfloop transitions, 3 changer transitions 21/130 dead transitions. [2024-11-08 17:24:59,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 130 transitions, 823 flow [2024-11-08 17:24:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:24:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:24:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-11-08 17:24:59,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-11-08 17:24:59,557 INFO L175 Difference]: Start difference. First operand has 113 places, 81 transitions, 357 flow. Second operand 4 states and 227 transitions. [2024-11-08 17:24:59,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 130 transitions, 823 flow [2024-11-08 17:24:59,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 130 transitions, 795 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:24:59,601 INFO L231 Difference]: Finished difference. Result has 111 places, 73 transitions, 306 flow [2024-11-08 17:24:59,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=111, PETRI_TRANSITIONS=73} [2024-11-08 17:24:59,602 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 35 predicate places. [2024-11-08 17:24:59,602 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 73 transitions, 306 flow [2024-11-08 17:24:59,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 17:24:59,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:24:59,603 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:59,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 17:24:59,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 17:24:59,803 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:24:59,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1980243483, now seen corresponding path program 1 times [2024-11-08 17:24:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:59,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684233738] [2024-11-08 17:24:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:24:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684233738] [2024-11-08 17:24:59,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684233738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084463252] [2024-11-08 17:24:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:59,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:59,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:59,893 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:59,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:25:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:00,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:25:00,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:25:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:25:00,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:25:00,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084463252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:25:00,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:25:00,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:25:00,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823073502] [2024-11-08 17:25:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:25:00,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:25:00,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:25:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:25:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:25:00,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2024-11-08 17:25:00,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 73 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:00,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:25:00,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2024-11-08 17:25:00,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:25:00,669 INFO L124 PetriNetUnfolderBase]: 1695/3778 cut-off events. [2024-11-08 17:25:00,670 INFO L125 PetriNetUnfolderBase]: For 3648/3666 co-relation queries the response was YES. [2024-11-08 17:25:00,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9828 conditions, 3778 events. 1695/3778 cut-off events. For 3648/3666 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26733 event pairs, 1060 based on Foata normal form. 59/3748 useless extension candidates. Maximal degree in co-relation 9805. Up to 2004 conditions per place. [2024-11-08 17:25:00,687 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 118 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2024-11-08 17:25:00,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 144 transitions, 894 flow [2024-11-08 17:25:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:25:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:25:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 265 transitions. [2024-11-08 17:25:00,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-08 17:25:00,688 INFO L175 Difference]: Start difference. First operand has 111 places, 73 transitions, 306 flow. Second operand 5 states and 265 transitions. [2024-11-08 17:25:00,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 144 transitions, 894 flow [2024-11-08 17:25:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 144 transitions, 838 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-11-08 17:25:00,709 INFO L231 Difference]: Finished difference. Result has 100 places, 72 transitions, 284 flow [2024-11-08 17:25:00,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=100, PETRI_TRANSITIONS=72} [2024-11-08 17:25:00,710 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2024-11-08 17:25:00,710 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 72 transitions, 284 flow [2024-11-08 17:25:00,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:00,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:25:00,710 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:25:00,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 17:25:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 17:25:00,911 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:25:00,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:25:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1980242458, now seen corresponding path program 1 times [2024-11-08 17:25:00,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:25:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7223717] [2024-11-08 17:25:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:25:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:25:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:25:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7223717] [2024-11-08 17:25:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7223717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:25:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653780319] [2024-11-08 17:25:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:01,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:01,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:25:01,051 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:25:01,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:25:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:01,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:25:01,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:25:01,204 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:25:01,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:25:01,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653780319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:25:01,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:25:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:25:01,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227617864] [2024-11-08 17:25:01,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:25:01,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:25:01,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:25:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:25:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:25:01,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2024-11-08 17:25:01,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 72 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 17:25:01,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:25:01,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2024-11-08 17:25:01,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:25:01,761 INFO L124 PetriNetUnfolderBase]: 1941/3987 cut-off events. [2024-11-08 17:25:01,761 INFO L125 PetriNetUnfolderBase]: For 3103/3121 co-relation queries the response was YES. [2024-11-08 17:25:01,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 3987 events. 1941/3987 cut-off events. For 3103/3121 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26683 event pairs, 1212 based on Foata normal form. 57/3944 useless extension candidates. Maximal degree in co-relation 10242. Up to 2274 conditions per place. [2024-11-08 17:25:01,775 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 73 selfloop transitions, 1 changer transitions 29/121 dead transitions. [2024-11-08 17:25:01,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 708 flow [2024-11-08 17:25:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:25:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:25:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2024-11-08 17:25:01,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6577380952380952 [2024-11-08 17:25:01,776 INFO L175 Difference]: Start difference. First operand has 100 places, 72 transitions, 284 flow. Second operand 4 states and 221 transitions. [2024-11-08 17:25:01,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 708 flow [2024-11-08 17:25:01,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 696 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:25:01,802 INFO L231 Difference]: Finished difference. Result has 98 places, 68 transitions, 258 flow [2024-11-08 17:25:01,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=98, PETRI_TRANSITIONS=68} [2024-11-08 17:25:01,803 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 22 predicate places. [2024-11-08 17:25:01,803 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 68 transitions, 258 flow [2024-11-08 17:25:01,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 17:25:01,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:25:01,803 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:25:01,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 17:25:02,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:02,004 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-08 17:25:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:25:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1986475819, now seen corresponding path program 1 times [2024-11-08 17:25:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:25:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485946675] [2024-11-08 17:25:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:25:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:25:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:25:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485946675] [2024-11-08 17:25:02,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485946675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:25:02,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221939181] [2024-11-08 17:25:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:25:02,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:25:02,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:25:02,106 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:25:02,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:25:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:25:02,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:25:02,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:25:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:25:02,255 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:25:02,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221939181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:25:02,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:25:02,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-08 17:25:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172876744] [2024-11-08 17:25:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:25:02,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:25:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:25:02,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:25:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:25:02,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-08 17:25:02,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 68 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:02,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:25:02,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-08 17:25:02,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:25:02,725 INFO L124 PetriNetUnfolderBase]: 1285/2773 cut-off events. [2024-11-08 17:25:02,725 INFO L125 PetriNetUnfolderBase]: For 1703/1707 co-relation queries the response was YES. [2024-11-08 17:25:02,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 2773 events. 1285/2773 cut-off events. For 1703/1707 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17931 event pairs, 984 based on Foata normal form. 53/2689 useless extension candidates. Maximal degree in co-relation 6791. Up to 1869 conditions per place. [2024-11-08 17:25:02,738 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2024-11-08 17:25:02,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 115 transitions, 658 flow [2024-11-08 17:25:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:25:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:25:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-08 17:25:02,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6517857142857143 [2024-11-08 17:25:02,740 INFO L175 Difference]: Start difference. First operand has 98 places, 68 transitions, 258 flow. Second operand 4 states and 219 transitions. [2024-11-08 17:25:02,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 115 transitions, 658 flow [2024-11-08 17:25:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 650 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 17:25:02,752 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-11-08 17:25:02,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-11-08 17:25:02,752 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 17 predicate places. [2024-11-08 17:25:02,753 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-11-08 17:25:02,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:25:02,756 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-08 17:25:02,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-08 17:25:02,758 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-08 17:25:02,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-08 17:25:02,760 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-08 17:25:02,761 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-08 17:25:02,761 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-08 17:25:02,761 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-08 17:25:02,761 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-08 17:25:02,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-08 17:25:02,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-08 17:25:02,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-08 17:25:02,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-08 17:25:02,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-08 17:25:02,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:25:02,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 17:25:02,964 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:25:02,969 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 17:25:02,969 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 17:25:02,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:25:02 BasicIcfg [2024-11-08 17:25:02,975 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 17:25:02,976 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 17:25:02,976 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 17:25:02,976 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 17:25:02,976 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:24:30" (3/4) ... [2024-11-08 17:25:02,978 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 17:25:02,981 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-08 17:25:02,982 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-08 17:25:02,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2024-11-08 17:25:02,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-11-08 17:25:02,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-08 17:25:02,987 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 17:25:03,094 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 17:25:03,098 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 17:25:03,098 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 17:25:03,099 INFO L158 Benchmark]: Toolchain (without parser) took 33938.65ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 985.7MB). Free memory was 112.0MB in the beginning and 393.2MB in the end (delta: -281.2MB). Peak memory consumption was 707.4MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,099 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:25:03,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.17ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 97.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.67ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 95.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,100 INFO L158 Benchmark]: Boogie Preprocessor took 61.50ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 92.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,100 INFO L158 Benchmark]: RCFGBuilder took 1109.62ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 97.8MB in the end (delta: -5.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,100 INFO L158 Benchmark]: TraceAbstraction took 32226.56ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 985.7MB). Free memory was 97.1MB in the beginning and 398.4MB in the end (delta: -301.3MB). Peak memory consumption was 683.0MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,100 INFO L158 Benchmark]: Witness Printer took 122.37ms. Allocated memory is still 1.1GB. Free memory was 398.4MB in the beginning and 393.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 17:25:03,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.17ms. Allocated memory is still 151.0MB. Free memory was 112.0MB in the beginning and 97.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.67ms. Allocated memory is still 151.0MB. Free memory was 97.9MB in the beginning and 95.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.50ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 92.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1109.62ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 97.8MB in the end (delta: -5.6MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * TraceAbstraction took 32226.56ms. Allocated memory was 151.0MB in the beginning and 1.1GB in the end (delta: 985.7MB). Free memory was 97.1MB in the beginning and 398.4MB in the end (delta: -301.3MB). Peak memory consumption was 683.0MB. Max. memory is 16.1GB. * Witness Printer took 122.37ms. Allocated memory is still 1.1GB. Free memory was 398.4MB in the beginning and 393.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.1s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2062 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1736 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 143 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5694 IncrementalHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 107 mSDtfsCounter, 5694 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=357occurred in iteration=27, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1370 NumberOfCodeBlocks, 1370 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1341 ConstructedInterpolants, 0 QuantifiedInterpolants, 2957 SizeOfPredicates, 34 NumberOfNonLiveVariables, 3638 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 54 InterpolantComputations, 29 PerfectInterpolantSequences, 715/770 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-08 17:25:03,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_974bb605-1e6b-45a7-a78d-d78afbfc9c46/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE