./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya --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 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:34:43,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:34:43,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:34:43,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:34:43,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:34:43,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:34:43,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:34:43,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:34:43,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:34:43,697 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:34:43,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:34:43,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:34:43,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:34:43,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:34:43,700 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:34:43,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:34:43,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:34:43,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:34:43,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:34:43,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:34:43,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:34:43,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:34:43,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:34:43,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:34:43,704 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:34:43,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:34:43,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:34:43,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:34:43,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:34:43,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:34:43,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:34:43,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:34:43,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:34:43,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:34:43,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:34:43,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:34:43,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:34:43,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:34:43,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:34:43,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:34:43,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:34:43,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:34:43,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:34:43,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:34:43,713 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_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2023-11-29 04:34:43,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:34:43,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:34:43,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:34:43,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:34:43,974 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:34:43,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-29 04:34:46,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:34:46,911 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:34:46,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-29 04:34:46,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/data/74da1553d/8cab77c1daaf4c1d82cea70e08e5181b/FLAG216380770 [2023-11-29 04:34:46,932 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/data/74da1553d/8cab77c1daaf4c1d82cea70e08e5181b [2023-11-29 04:34:46,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:34:46,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:34:46,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:34:46,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:34:46,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:34:46,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:34:46" (1/1) ... [2023-11-29 04:34:46,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637d3cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:46, skipping insertion in model container [2023-11-29 04:34:46,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:34:46" (1/1) ... [2023-11-29 04:34:46,965 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:34:47,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:34:47,139 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:34:47,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:34:47,183 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:34:47,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47 WrapperNode [2023-11-29 04:34:47,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:34:47,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:34:47,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:34:47,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:34:47,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,232 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 123 [2023-11-29 04:34:47,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:34:47,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:34:47,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:34:47,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:34:47,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,266 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 6, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 2, 1, 1]. [2023-11-29 04:34:47,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:34:47,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:34:47,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:34:47,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:34:47,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (1/1) ... [2023-11-29 04:34:47,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:34:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:47,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:34:47,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:34:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:34:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:34:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:34:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:34:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:34:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:34:47,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:34:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:34:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:34:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:34:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:34:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:34:47,359 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:34:47,502 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:34:47,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:34:47,800 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:34:48,012 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:34:48,012 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:34:48,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:34:48 BoogieIcfgContainer [2023-11-29 04:34:48,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:34:48,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:34:48,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:34:48,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:34:48,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:34:46" (1/3) ... [2023-11-29 04:34:48,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ead15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:34:48, skipping insertion in model container [2023-11-29 04:34:48,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:34:47" (2/3) ... [2023-11-29 04:34:48,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ead15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:34:48, skipping insertion in model container [2023-11-29 04:34:48,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:34:48" (3/3) ... [2023-11-29 04:34:48,022 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-11-29 04:34:48,029 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:34:48,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:34:48,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 04:34:48,038 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:34:48,083 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:34:48,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 100 flow [2023-11-29 04:34:48,139 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2023-11-29 04:34:48,140 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:34:48,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 6/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-29 04:34:48,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 100 flow [2023-11-29 04:34:48,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 39 transitions, 87 flow [2023-11-29 04:34:48,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:34:48,167 INFO L357 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, mHoare=true, 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;@344f8550, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:34:48,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 04:34:48,171 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:34:48,171 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:34:48,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:34:48,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:48,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:34:48,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:48,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash 482451, now seen corresponding path program 1 times [2023-11-29 04:34:48,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:48,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109472516] [2023-11-29 04:34:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:48,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109472516] [2023-11-29 04:34:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109472516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:34:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124839484] [2023-11-29 04:34:48,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:48,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:48,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:34:48,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-11-29 04:34:48,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:48,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:34:48,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:48,648 INFO L124 PetriNetUnfolderBase]: 178/334 cut-off events. [2023-11-29 04:34:48,648 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 04:34:48,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 334 events. 178/334 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1390 event pairs, 97 based on Foata normal form. 2/232 useless extension candidates. Maximal degree in co-relation 545. Up to 270 conditions per place. [2023-11-29 04:34:48,655 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 21 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-11-29 04:34:48,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 137 flow [2023-11-29 04:34:48,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:34:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:34:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2023-11-29 04:34:48,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2023-11-29 04:34:48,669 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 77 transitions. [2023-11-29 04:34:48,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 77 transitions. [2023-11-29 04:34:48,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:48,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 77 transitions. [2023-11-29 04:34:48,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2023-11-29 04:34:48,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:48,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:48,682 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 87 flow. Second operand 4 states and 77 transitions. [2023-11-29 04:34:48,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 137 flow [2023-11-29 04:34:48,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:34:48,689 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 90 flow [2023-11-29 04:34:48,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-11-29 04:34:48,695 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-11-29 04:34:48,696 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 90 flow [2023-11-29 04:34:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-11-29 04:34:48,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:48,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 04:34:48,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:34:48,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:48,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash 14956428, now seen corresponding path program 1 times [2023-11-29 04:34:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101162962] [2023-11-29 04:34:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:48,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101162962] [2023-11-29 04:34:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101162962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:48,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:48,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:34:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531619641] [2023-11-29 04:34:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:48,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:48,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:48,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:34:48,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-11-29 04:34:48,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:48,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:34:48,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:48,934 INFO L124 PetriNetUnfolderBase]: 180/342 cut-off events. [2023-11-29 04:34:48,934 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 04:34:48,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 342 events. 180/342 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1441 event pairs, 97 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 604. Up to 279 conditions per place. [2023-11-29 04:34:48,939 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 26 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-29 04:34:48,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 178 flow [2023-11-29 04:34:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:34:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:34:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2023-11-29 04:34:48,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2023-11-29 04:34:48,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 83 transitions. [2023-11-29 04:34:48,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 83 transitions. [2023-11-29 04:34:48,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:48,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 83 transitions. [2023-11-29 04:34:48,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2023-11-29 04:34:48,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:48,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:48,946 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 90 flow. Second operand 4 states and 83 transitions. [2023-11-29 04:34:48,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 178 flow [2023-11-29 04:34:48,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:34:48,948 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 134 flow [2023-11-29 04:34:48,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-11-29 04:34:48,950 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-29 04:34:48,950 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 134 flow [2023-11-29 04:34:48,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-11-29 04:34:48,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:48,951 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:34:48,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:34:48,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:48,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:48,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1109174234, now seen corresponding path program 1 times [2023-11-29 04:34:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:48,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240456773] [2023-11-29 04:34:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:48,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:49,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:49,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240456773] [2023-11-29 04:34:49,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240456773] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:49,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714782266] [2023-11-29 04:34:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:49,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:49,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:34:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:49,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:34:49,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:49,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714782266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:49,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:49,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-29 04:34:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969902868] [2023-11-29 04:34:49,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:34:49,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:34:49,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:34:49,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:34:49,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 134 flow. Second operand has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 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) [2023-11-29 04:34:49,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:49,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:34:49,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:49,576 INFO L124 PetriNetUnfolderBase]: 186/366 cut-off events. [2023-11-29 04:34:49,577 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-29 04:34:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 366 events. 186/366 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1628 event pairs, 97 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 615. Up to 282 conditions per place. [2023-11-29 04:34:49,581 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 26 selfloop transitions, 25 changer transitions 0/61 dead transitions. [2023-11-29 04:34:49,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 314 flow [2023-11-29 04:34:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:34:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:34:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2023-11-29 04:34:49,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116279069767442 [2023-11-29 04:34:49,585 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 177 transitions. [2023-11-29 04:34:49,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 177 transitions. [2023-11-29 04:34:49,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:49,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 177 transitions. [2023-11-29 04:34:49,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 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) [2023-11-29 04:34:49,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 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) [2023-11-29 04:34:49,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 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) [2023-11-29 04:34:49,591 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 134 flow. Second operand 10 states and 177 transitions. [2023-11-29 04:34:49,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 314 flow [2023-11-29 04:34:49,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:34:49,595 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 296 flow [2023-11-29 04:34:49,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-11-29 04:34:49,596 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2023-11-29 04:34:49,596 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 296 flow [2023-11-29 04:34:49,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.0) internal successors, (130), 10 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) [2023-11-29 04:34:49,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:49,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:49,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:34:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:49,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:49,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1178859784, now seen corresponding path program 1 times [2023-11-29 04:34:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451361645] [2023-11-29 04:34:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:49,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451361645] [2023-11-29 04:34:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451361645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:49,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:49,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:34:49,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755757788] [2023-11-29 04:34:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:49,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2023-11-29 04:34:49,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-29 04:34:49,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:49,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2023-11-29 04:34:49,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:50,079 INFO L124 PetriNetUnfolderBase]: 348/625 cut-off events. [2023-11-29 04:34:50,079 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-29 04:34:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 625 events. 348/625 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2872 event pairs, 63 based on Foata normal form. 14/480 useless extension candidates. Maximal degree in co-relation 1236. Up to 323 conditions per place. [2023-11-29 04:34:50,084 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 74 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-29 04:34:50,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 87 transitions, 507 flow [2023-11-29 04:34:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:34:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:34:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-29 04:34:50,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453488372093024 [2023-11-29 04:34:50,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-29 04:34:50,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-29 04:34:50,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:50,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-29 04:34:50,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-11-29 04:34:50,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:50,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:50,090 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 296 flow. Second operand 4 states and 111 transitions. [2023-11-29 04:34:50,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 87 transitions, 507 flow [2023-11-29 04:34:50,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 87 transitions, 443 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-29 04:34:50,096 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 254 flow [2023-11-29 04:34:50,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-11-29 04:34:50,097 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-11-29 04:34:50,097 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 254 flow [2023-11-29 04:34:50,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-29 04:34:50,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:50,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:34:50,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:50,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1226077274, now seen corresponding path program 1 times [2023-11-29 04:34:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:50,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965549256] [2023-11-29 04:34:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965549256] [2023-11-29 04:34:50,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965549256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:50,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:50,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:34:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955943020] [2023-11-29 04:34:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:50,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2023-11-29 04:34:50,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 04:34:50,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:50,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2023-11-29 04:34:50,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:50,361 INFO L124 PetriNetUnfolderBase]: 539/967 cut-off events. [2023-11-29 04:34:50,361 INFO L125 PetriNetUnfolderBase]: For 198/226 co-relation queries the response was YES. [2023-11-29 04:34:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 967 events. 539/967 cut-off events. For 198/226 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4650 event pairs, 123 based on Foata normal form. 24/812 useless extension candidates. Maximal degree in co-relation 2038. Up to 483 conditions per place. [2023-11-29 04:34:50,368 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 78 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-29 04:34:50,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 496 flow [2023-11-29 04:34:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:34:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:34:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 04:34:50,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6337209302325582 [2023-11-29 04:34:50,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 04:34:50,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 04:34:50,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:50,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 04:34:50,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2023-11-29 04:34:50,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:50,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:34:50,373 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 254 flow. Second operand 4 states and 109 transitions. [2023-11-29 04:34:50,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 496 flow [2023-11-29 04:34:50,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 91 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:34:50,378 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 274 flow [2023-11-29 04:34:50,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2023-11-29 04:34:50,380 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2023-11-29 04:34:50,380 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 274 flow [2023-11-29 04:34:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-29 04:34:50,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:50,381 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:50,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:34:50,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:50,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 586748484, now seen corresponding path program 1 times [2023-11-29 04:34:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823777106] [2023-11-29 04:34:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:34:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823777106] [2023-11-29 04:34:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823777106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:50,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:34:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686142494] [2023-11-29 04:34:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:50,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 04:34:50,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 04:34:50,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:50,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 04:34:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:50,732 INFO L124 PetriNetUnfolderBase]: 578/1166 cut-off events. [2023-11-29 04:34:50,732 INFO L125 PetriNetUnfolderBase]: For 350/352 co-relation queries the response was YES. [2023-11-29 04:34:50,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 1166 events. 578/1166 cut-off events. For 350/352 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6333 event pairs, 402 based on Foata normal form. 0/1051 useless extension candidates. Maximal degree in co-relation 2563. Up to 742 conditions per place. [2023-11-29 04:34:50,744 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 68 selfloop transitions, 13 changer transitions 3/96 dead transitions. [2023-11-29 04:34:50,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 561 flow [2023-11-29 04:34:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:34:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:34:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2023-11-29 04:34:50,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953488372093023 [2023-11-29 04:34:50,746 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 128 transitions. [2023-11-29 04:34:50,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 128 transitions. [2023-11-29 04:34:50,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:50,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 128 transitions. [2023-11-29 04:34:50,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.6) internal successors, (128), 5 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) [2023-11-29 04:34:50,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:50,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:50,748 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 274 flow. Second operand 5 states and 128 transitions. [2023-11-29 04:34:50,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 561 flow [2023-11-29 04:34:50,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:34:50,754 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 392 flow [2023-11-29 04:34:50,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2023-11-29 04:34:50,755 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2023-11-29 04:34:50,755 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 392 flow [2023-11-29 04:34:50,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-29 04:34:50,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:50,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:34:50,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -96544670, now seen corresponding path program 1 times [2023-11-29 04:34:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115103889] [2023-11-29 04:34:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:34:50,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115103889] [2023-11-29 04:34:50,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115103889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:50,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:50,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:34:50,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951975045] [2023-11-29 04:34:50,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:50,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:34:50,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 04:34:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-29 04:34:50,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:50,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 04:34:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:51,050 INFO L124 PetriNetUnfolderBase]: 491/993 cut-off events. [2023-11-29 04:34:51,050 INFO L125 PetriNetUnfolderBase]: For 393/395 co-relation queries the response was YES. [2023-11-29 04:34:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 993 events. 491/993 cut-off events. For 393/395 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5146 event pairs, 339 based on Foata normal form. 0/940 useless extension candidates. Maximal degree in co-relation 2224. Up to 742 conditions per place. [2023-11-29 04:34:51,070 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 59 selfloop transitions, 4 changer transitions 15/90 dead transitions. [2023-11-29 04:34:51,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 593 flow [2023-11-29 04:34:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:34:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:34:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2023-11-29 04:34:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2023-11-29 04:34:51,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 125 transitions. [2023-11-29 04:34:51,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 125 transitions. [2023-11-29 04:34:51,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:51,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 125 transitions. [2023-11-29 04:34:51,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2023-11-29 04:34:51,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:51,075 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:51,075 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 392 flow. Second operand 5 states and 125 transitions. [2023-11-29 04:34:51,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 593 flow [2023-11-29 04:34:51,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 589 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:34:51,080 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 390 flow [2023-11-29 04:34:51,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-11-29 04:34:51,080 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2023-11-29 04:34:51,081 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 390 flow [2023-11-29 04:34:51,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-29 04:34:51,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:51,081 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:51,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:34:51,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:51,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash 805501150, now seen corresponding path program 1 times [2023-11-29 04:34:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:51,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890028731] [2023-11-29 04:34:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:51,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:34:51,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890028731] [2023-11-29 04:34:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890028731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:51,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:34:51,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829160927] [2023-11-29 04:34:51,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:51,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:34:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:34:51,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:34:51,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 04:34:51,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-29 04:34:51,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:51,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 04:34:51,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:51,394 INFO L124 PetriNetUnfolderBase]: 600/1191 cut-off events. [2023-11-29 04:34:51,394 INFO L125 PetriNetUnfolderBase]: For 485/509 co-relation queries the response was YES. [2023-11-29 04:34:51,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1191 events. 600/1191 cut-off events. For 485/509 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6423 event pairs, 258 based on Foata normal form. 22/1209 useless extension candidates. Maximal degree in co-relation 2724. Up to 426 conditions per place. [2023-11-29 04:34:51,401 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 82 selfloop transitions, 10 changer transitions 3/107 dead transitions. [2023-11-29 04:34:51,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 107 transitions, 679 flow [2023-11-29 04:34:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:34:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:34:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-29 04:34:51,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2023-11-29 04:34:51,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-29 04:34:51,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-29 04:34:51,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:51,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-29 04:34:51,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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) [2023-11-29 04:34:51,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:51,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:51,404 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 390 flow. Second operand 5 states and 140 transitions. [2023-11-29 04:34:51,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 107 transitions, 679 flow [2023-11-29 04:34:51,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 665 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:34:51,409 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 399 flow [2023-11-29 04:34:51,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-11-29 04:34:51,410 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2023-11-29 04:34:51,410 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 399 flow [2023-11-29 04:34:51,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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) [2023-11-29 04:34:51,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:51,410 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 04:34:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:34:51,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:51,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1798302476, now seen corresponding path program 2 times [2023-11-29 04:34:51,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:51,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014917420] [2023-11-29 04:34:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:51,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014917420] [2023-11-29 04:34:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014917420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602396688] [2023-11-29 04:34:51,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:34:51,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:51,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:51,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:51,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:34:51,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:34:51,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:34:51,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:34:51,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:34:51,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:34:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602396688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:51,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 04:34:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581337221] [2023-11-29 04:34:51,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:51,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:34:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:34:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:34:51,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:34:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 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) [2023-11-29 04:34:51,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:51,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:34:51,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:52,242 INFO L124 PetriNetUnfolderBase]: 603/1238 cut-off events. [2023-11-29 04:34:52,243 INFO L125 PetriNetUnfolderBase]: For 643/643 co-relation queries the response was YES. [2023-11-29 04:34:52,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 1238 events. 603/1238 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6917 event pairs, 426 based on Foata normal form. 4/1235 useless extension candidates. Maximal degree in co-relation 2848. Up to 984 conditions per place. [2023-11-29 04:34:52,250 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 28 selfloop transitions, 43 changer transitions 0/81 dead transitions. [2023-11-29 04:34:52,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 81 transitions, 583 flow [2023-11-29 04:34:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:34:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 04:34:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 347 transitions. [2023-11-29 04:34:52,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33624031007751937 [2023-11-29 04:34:52,253 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 347 transitions. [2023-11-29 04:34:52,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 347 transitions. [2023-11-29 04:34:52,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:52,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 347 transitions. [2023-11-29 04:34:52,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 14.458333333333334) internal successors, (347), 24 states have internal predecessors, (347), 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) [2023-11-29 04:34:52,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 43.0) internal successors, (1075), 25 states have internal predecessors, (1075), 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) [2023-11-29 04:34:52,259 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 43.0) internal successors, (1075), 25 states have internal predecessors, (1075), 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) [2023-11-29 04:34:52,259 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 399 flow. Second operand 24 states and 347 transitions. [2023-11-29 04:34:52,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 81 transitions, 583 flow [2023-11-29 04:34:52,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:34:52,264 INFO L231 Difference]: Finished difference. Result has 91 places, 81 transitions, 536 flow [2023-11-29 04:34:52,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=536, PETRI_PLACES=91, PETRI_TRANSITIONS=81} [2023-11-29 04:34:52,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 51 predicate places. [2023-11-29 04:34:52,266 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 81 transitions, 536 flow [2023-11-29 04:34:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 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) [2023-11-29 04:34:52,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:52,266 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:52,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:34:52,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:52,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:52,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash -328630148, now seen corresponding path program 1 times [2023-11-29 04:34:52,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:52,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033701712] [2023-11-29 04:34:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:34:52,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033701712] [2023-11-29 04:34:52,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033701712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:52,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:34:52,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:34:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783743161] [2023-11-29 04:34:52,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:52,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:34:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:52,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:34:52,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:34:52,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-29 04:34:52,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 81 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2023-11-29 04:34:52,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:52,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-29 04:34:52,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:52,842 INFO L124 PetriNetUnfolderBase]: 516/1045 cut-off events. [2023-11-29 04:34:52,843 INFO L125 PetriNetUnfolderBase]: For 592/612 co-relation queries the response was YES. [2023-11-29 04:34:52,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1045 events. 516/1045 cut-off events. For 592/612 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5428 event pairs, 203 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 2505. Up to 454 conditions per place. [2023-11-29 04:34:52,851 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 74 selfloop transitions, 10 changer transitions 11/106 dead transitions. [2023-11-29 04:34:52,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 797 flow [2023-11-29 04:34:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:34:52,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:34:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2023-11-29 04:34:52,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232558139534884 [2023-11-29 04:34:52,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 134 transitions. [2023-11-29 04:34:52,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 134 transitions. [2023-11-29 04:34:52,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:52,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 134 transitions. [2023-11-29 04:34:52,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-11-29 04:34:52,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:52,855 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:34:52,855 INFO L175 Difference]: Start difference. First operand has 91 places, 81 transitions, 536 flow. Second operand 5 states and 134 transitions. [2023-11-29 04:34:52,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 797 flow [2023-11-29 04:34:52,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 106 transitions, 676 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-11-29 04:34:52,862 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 429 flow [2023-11-29 04:34:52,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-11-29 04:34:52,863 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-11-29 04:34:52,863 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 429 flow [2023-11-29 04:34:52,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2023-11-29 04:34:52,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:52,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:34:52,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:52,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash -479778486, now seen corresponding path program 1 times [2023-11-29 04:34:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512526531] [2023-11-29 04:34:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:34:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512526531] [2023-11-29 04:34:52,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512526531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:52,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012087778] [2023-11-29 04:34:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:52,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:52,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:52,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:52,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:34:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:53,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:34:53,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:34:53,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:34:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012087778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:53,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-11-29 04:34:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937620793] [2023-11-29 04:34:53,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:34:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:34:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:34:53,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2023-11-29 04:34:53,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 429 flow. Second operand has 18 states, 18 states have (on average 12.222222222222221) internal successors, (220), 18 states have internal predecessors, (220), 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) [2023-11-29 04:34:53,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:53,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2023-11-29 04:34:53,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:54,302 INFO L124 PetriNetUnfolderBase]: 869/1628 cut-off events. [2023-11-29 04:34:54,302 INFO L125 PetriNetUnfolderBase]: For 1165/1209 co-relation queries the response was YES. [2023-11-29 04:34:54,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 1628 events. 869/1628 cut-off events. For 1165/1209 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8926 event pairs, 258 based on Foata normal form. 44/1649 useless extension candidates. Maximal degree in co-relation 4025. Up to 320 conditions per place. [2023-11-29 04:34:54,316 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 132 selfloop transitions, 35 changer transitions 24/199 dead transitions. [2023-11-29 04:34:54,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 199 transitions, 1290 flow [2023-11-29 04:34:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:34:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 04:34:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 303 transitions. [2023-11-29 04:34:54,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41450068399452805 [2023-11-29 04:34:54,319 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 303 transitions. [2023-11-29 04:34:54,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 303 transitions. [2023-11-29 04:34:54,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:54,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 303 transitions. [2023-11-29 04:34:54,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 17.823529411764707) internal successors, (303), 17 states have internal predecessors, (303), 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) [2023-11-29 04:34:54,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:34:54,324 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:34:54,324 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 429 flow. Second operand 17 states and 303 transitions. [2023-11-29 04:34:54,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 199 transitions, 1290 flow [2023-11-29 04:34:54,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 199 transitions, 1236 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-29 04:34:54,335 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 647 flow [2023-11-29 04:34:54,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=647, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-11-29 04:34:54,336 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2023-11-29 04:34:54,336 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 647 flow [2023-11-29 04:34:54,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.222222222222221) internal successors, (220), 18 states have internal predecessors, (220), 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) [2023-11-29 04:34:54,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:54,336 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2023-11-29 04:34:54,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:34:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:34:54,537 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:54,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -551151427, now seen corresponding path program 1 times [2023-11-29 04:34:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311645449] [2023-11-29 04:34:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:54,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:54,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311645449] [2023-11-29 04:34:54,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311645449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:54,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035877909] [2023-11-29 04:34:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:54,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:54,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:54,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:34:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:54,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:34:54,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:54,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:55,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035877909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:55,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:55,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-11-29 04:34:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744129671] [2023-11-29 04:34:55,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 04:34:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 04:34:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:34:55,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:34:55,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 647 flow. Second operand has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 states have internal predecessors, (366), 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) [2023-11-29 04:34:55,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:55,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:34:55,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:55,811 INFO L124 PetriNetUnfolderBase]: 860/1758 cut-off events. [2023-11-29 04:34:55,811 INFO L125 PetriNetUnfolderBase]: For 2074/2074 co-relation queries the response was YES. [2023-11-29 04:34:55,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 1758 events. 860/1758 cut-off events. For 2074/2074 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10306 event pairs, 594 based on Foata normal form. 21/1767 useless extension candidates. Maximal degree in co-relation 4160. Up to 1371 conditions per place. [2023-11-29 04:34:55,827 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 35 selfloop transitions, 120 changer transitions 0/164 dead transitions. [2023-11-29 04:34:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 164 transitions, 1615 flow [2023-11-29 04:34:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:34:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 04:34:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 416 transitions. [2023-11-29 04:34:55,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-11-29 04:34:55,830 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 416 transitions. [2023-11-29 04:34:55,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 416 transitions. [2023-11-29 04:34:55,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:55,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 416 transitions. [2023-11-29 04:34:55,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 16.0) internal successors, (416), 26 states have internal predecessors, (416), 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) [2023-11-29 04:34:55,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 43.0) internal successors, (1161), 27 states have internal predecessors, (1161), 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) [2023-11-29 04:34:55,837 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 43.0) internal successors, (1161), 27 states have internal predecessors, (1161), 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) [2023-11-29 04:34:55,837 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 647 flow. Second operand 26 states and 416 transitions. [2023-11-29 04:34:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 164 transitions, 1615 flow [2023-11-29 04:34:55,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 164 transitions, 1566 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-29 04:34:55,851 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1584 flow [2023-11-29 04:34:55,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1584, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2023-11-29 04:34:55,852 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2023-11-29 04:34:55,852 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1584 flow [2023-11-29 04:34:55,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.071428571428571) internal successors, (366), 28 states have internal predecessors, (366), 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) [2023-11-29 04:34:55,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:55,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:55,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:34:56,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:34:56,057 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:56,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:56,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1468220904, now seen corresponding path program 1 times [2023-11-29 04:34:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851808400] [2023-11-29 04:34:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:34:56,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851808400] [2023-11-29 04:34:56,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851808400] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273504892] [2023-11-29 04:34:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:56,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:56,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:34:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:56,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:34:56,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:34:56,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:34:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273504892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:56,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2023-11-29 04:34:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799808707] [2023-11-29 04:34:56,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:34:56,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:34:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:34:56,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2023-11-29 04:34:56,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1584 flow. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 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) [2023-11-29 04:34:56,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:56,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2023-11-29 04:34:56,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:57,642 INFO L124 PetriNetUnfolderBase]: 1494/2822 cut-off events. [2023-11-29 04:34:57,642 INFO L125 PetriNetUnfolderBase]: For 2578/2596 co-relation queries the response was YES. [2023-11-29 04:34:57,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 2822 events. 1494/2822 cut-off events. For 2578/2596 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17375 event pairs, 468 based on Foata normal form. 88/2858 useless extension candidates. Maximal degree in co-relation 7177. Up to 655 conditions per place. [2023-11-29 04:34:57,663 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 106 selfloop transitions, 122 changer transitions 21/256 dead transitions. [2023-11-29 04:34:57,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 256 transitions, 2427 flow [2023-11-29 04:34:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:34:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:34:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 235 transitions. [2023-11-29 04:34:57,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203935599284436 [2023-11-29 04:34:57,665 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 235 transitions. [2023-11-29 04:34:57,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 235 transitions. [2023-11-29 04:34:57,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:57,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 235 transitions. [2023-11-29 04:34:57,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 18.076923076923077) internal successors, (235), 13 states have internal predecessors, (235), 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) [2023-11-29 04:34:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2023-11-29 04:34:57,668 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2023-11-29 04:34:57,669 INFO L175 Difference]: Start difference. First operand has 120 places, 164 transitions, 1584 flow. Second operand 13 states and 235 transitions. [2023-11-29 04:34:57,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 256 transitions, 2427 flow [2023-11-29 04:34:57,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 256 transitions, 2046 flow, removed 130 selfloop flow, removed 12 redundant places. [2023-11-29 04:34:57,691 INFO L231 Difference]: Finished difference. Result has 120 places, 165 transitions, 1456 flow [2023-11-29 04:34:57,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1456, PETRI_PLACES=120, PETRI_TRANSITIONS=165} [2023-11-29 04:34:57,692 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2023-11-29 04:34:57,692 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 165 transitions, 1456 flow [2023-11-29 04:34:57,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 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) [2023-11-29 04:34:57,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:57,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:57,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:34:57,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:34:57,897 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:57,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1008359948, now seen corresponding path program 1 times [2023-11-29 04:34:57,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:57,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772559703] [2023-11-29 04:34:57,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:57,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:34:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772559703] [2023-11-29 04:34:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772559703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94216132] [2023-11-29 04:34:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:58,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:58,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:58,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:58,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:34:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:58,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:34:58,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:34:58,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:34:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94216132] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:58,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:58,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2023-11-29 04:34:58,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448528505] [2023-11-29 04:34:58,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:34:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:34:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:34:58,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2023-11-29 04:34:58,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 165 transitions, 1456 flow. Second operand has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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) [2023-11-29 04:34:58,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:58,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2023-11-29 04:34:58,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:59,223 INFO L124 PetriNetUnfolderBase]: 1602/2995 cut-off events. [2023-11-29 04:34:59,223 INFO L125 PetriNetUnfolderBase]: For 3485/3519 co-relation queries the response was YES. [2023-11-29 04:34:59,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8156 conditions, 2995 events. 1602/2995 cut-off events. For 3485/3519 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 17979 event pairs, 444 based on Foata normal form. 40/3030 useless extension candidates. Maximal degree in co-relation 7956. Up to 691 conditions per place. [2023-11-29 04:34:59,239 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 92 selfloop transitions, 121 changer transitions 43/263 dead transitions. [2023-11-29 04:34:59,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 263 transitions, 2337 flow [2023-11-29 04:34:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:34:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:34:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 256 transitions. [2023-11-29 04:34:59,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45796064400715564 [2023-11-29 04:34:59,241 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 256 transitions. [2023-11-29 04:34:59,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 256 transitions. [2023-11-29 04:34:59,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:59,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 256 transitions. [2023-11-29 04:34:59,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 19.692307692307693) internal successors, (256), 13 states have internal predecessors, (256), 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) [2023-11-29 04:34:59,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2023-11-29 04:34:59,245 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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) [2023-11-29 04:34:59,245 INFO L175 Difference]: Start difference. First operand has 120 places, 165 transitions, 1456 flow. Second operand 13 states and 256 transitions. [2023-11-29 04:34:59,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 263 transitions, 2337 flow [2023-11-29 04:34:59,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 263 transitions, 2263 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-29 04:34:59,263 INFO L231 Difference]: Finished difference. Result has 128 places, 164 transitions, 1661 flow [2023-11-29 04:34:59,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1661, PETRI_PLACES=128, PETRI_TRANSITIONS=164} [2023-11-29 04:34:59,264 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 88 predicate places. [2023-11-29 04:34:59,265 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 164 transitions, 1661 flow [2023-11-29 04:34:59,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.947368421052632) internal successors, (227), 19 states have internal predecessors, (227), 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) [2023-11-29 04:34:59,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:59,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:59,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:34:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:34:59,466 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:34:59,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1383683970, now seen corresponding path program 1 times [2023-11-29 04:34:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:34:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004794507] [2023-11-29 04:34:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:34:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:34:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:34:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004794507] [2023-11-29 04:34:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004794507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184550784] [2023-11-29 04:34:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:59,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:34:59,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:34:59,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:34:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:34:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:59,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:34:59,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:34:59,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:34:59,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184550784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:59,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:34:59,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 17 [2023-11-29 04:34:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279191735] [2023-11-29 04:34:59,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:59,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:34:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:34:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:34:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:34:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2023-11-29 04:34:59,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 164 transitions, 1661 flow. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 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) [2023-11-29 04:34:59,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:59,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2023-11-29 04:34:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:00,681 INFO L124 PetriNetUnfolderBase]: 1366/2519 cut-off events. [2023-11-29 04:35:00,681 INFO L125 PetriNetUnfolderBase]: For 4036/4080 co-relation queries the response was YES. [2023-11-29 04:35:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7321 conditions, 2519 events. 1366/2519 cut-off events. For 4036/4080 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13593 event pairs, 312 based on Foata normal form. 56/2571 useless extension candidates. Maximal degree in co-relation 7103. Up to 631 conditions per place. [2023-11-29 04:35:00,693 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 158 selfloop transitions, 61 changer transitions 70/296 dead transitions. [2023-11-29 04:35:00,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 296 transitions, 2839 flow [2023-11-29 04:35:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:35:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 04:35:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 313 transitions. [2023-11-29 04:35:00,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818057455540354 [2023-11-29 04:35:00,695 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 313 transitions. [2023-11-29 04:35:00,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 313 transitions. [2023-11-29 04:35:00,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:00,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 313 transitions. [2023-11-29 04:35:00,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 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) [2023-11-29 04:35:00,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:35:00,698 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:35:00,698 INFO L175 Difference]: Start difference. First operand has 128 places, 164 transitions, 1661 flow. Second operand 17 states and 313 transitions. [2023-11-29 04:35:00,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 296 transitions, 2839 flow [2023-11-29 04:35:00,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 296 transitions, 2661 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-11-29 04:35:00,721 INFO L231 Difference]: Finished difference. Result has 132 places, 164 transitions, 1657 flow [2023-11-29 04:35:00,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1657, PETRI_PLACES=132, PETRI_TRANSITIONS=164} [2023-11-29 04:35:00,722 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 92 predicate places. [2023-11-29 04:35:00,723 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 164 transitions, 1657 flow [2023-11-29 04:35:00,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 18 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) [2023-11-29 04:35:00,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:00,723 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:00,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:35:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:35:00,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:35:00,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1609840304, now seen corresponding path program 2 times [2023-11-29 04:35:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:00,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977206692] [2023-11-29 04:35:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:35:01,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:01,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977206692] [2023-11-29 04:35:01,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977206692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:01,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205403439] [2023-11-29 04:35:01,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:01,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:01,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:01,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:01,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:35:01,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:01,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:01,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:01,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:35:01,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:35:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205403439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:01,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2023-11-29 04:35:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172952178] [2023-11-29 04:35:01,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:35:01,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:35:01,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:35:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2023-11-29 04:35:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 164 transitions, 1657 flow. Second operand has 16 states, 16 states have (on average 12.0625) internal successors, (193), 16 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2023-11-29 04:35:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:02,596 INFO L124 PetriNetUnfolderBase]: 2269/4116 cut-off events. [2023-11-29 04:35:02,596 INFO L125 PetriNetUnfolderBase]: For 5927/6039 co-relation queries the response was YES. [2023-11-29 04:35:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 4116 events. 2269/4116 cut-off events. For 5927/6039 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 24824 event pairs, 492 based on Foata normal form. 64/4175 useless extension candidates. Maximal degree in co-relation 11571. Up to 697 conditions per place. [2023-11-29 04:35:02,615 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 232 selfloop transitions, 41 changer transitions 30/310 dead transitions. [2023-11-29 04:35:02,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 310 transitions, 2949 flow [2023-11-29 04:35:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:35:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 04:35:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 318 transitions. [2023-11-29 04:35:02,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43502051983584133 [2023-11-29 04:35:02,617 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 318 transitions. [2023-11-29 04:35:02,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 318 transitions. [2023-11-29 04:35:02,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:02,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 318 transitions. [2023-11-29 04:35:02,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 18.705882352941178) internal successors, (318), 17 states have internal predecessors, (318), 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) [2023-11-29 04:35:02,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:35:02,620 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 43.0) internal successors, (774), 18 states have internal predecessors, (774), 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) [2023-11-29 04:35:02,620 INFO L175 Difference]: Start difference. First operand has 132 places, 164 transitions, 1657 flow. Second operand 17 states and 318 transitions. [2023-11-29 04:35:02,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 310 transitions, 2949 flow [2023-11-29 04:35:02,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 310 transitions, 2802 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-11-29 04:35:02,640 INFO L231 Difference]: Finished difference. Result has 133 places, 165 transitions, 1690 flow [2023-11-29 04:35:02,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1690, PETRI_PLACES=133, PETRI_TRANSITIONS=165} [2023-11-29 04:35:02,641 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 93 predicate places. [2023-11-29 04:35:02,641 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 165 transitions, 1690 flow [2023-11-29 04:35:02,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0625) internal successors, (193), 16 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:02,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:02,641 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:02,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:35:02,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:35:02,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:35:02,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:02,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1065770788, now seen corresponding path program 2 times [2023-11-29 04:35:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960151831] [2023-11-29 04:35:02,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:35:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960151831] [2023-11-29 04:35:03,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960151831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:03,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440928460] [2023-11-29 04:35:03,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:03,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:03,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:03,047 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:03,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:35:03,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:03,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:03,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:03,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:35:03,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:35:03,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440928460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:03,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:03,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2023-11-29 04:35:03,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454436344] [2023-11-29 04:35:03,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:03,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:35:03,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:03,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:35:03,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:35:03,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2023-11-29 04:35:03,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 165 transitions, 1690 flow. Second operand has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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) [2023-11-29 04:35:03,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:03,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2023-11-29 04:35:03,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:04,413 INFO L124 PetriNetUnfolderBase]: 2032/4229 cut-off events. [2023-11-29 04:35:04,413 INFO L125 PetriNetUnfolderBase]: For 8351/8351 co-relation queries the response was YES. [2023-11-29 04:35:04,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12917 conditions, 4229 events. 2032/4229 cut-off events. For 8351/8351 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 29162 event pairs, 666 based on Foata normal form. 160/4387 useless extension candidates. Maximal degree in co-relation 12656. Up to 906 conditions per place. [2023-11-29 04:35:04,433 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 57 selfloop transitions, 87 changer transitions 231/378 dead transitions. [2023-11-29 04:35:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 378 transitions, 3842 flow [2023-11-29 04:35:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:35:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 04:35:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 471 transitions. [2023-11-29 04:35:04,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2023-11-29 04:35:04,435 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 471 transitions. [2023-11-29 04:35:04,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 471 transitions. [2023-11-29 04:35:04,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:04,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 471 transitions. [2023-11-29 04:35:04,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 19.625) internal successors, (471), 24 states have internal predecessors, (471), 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) [2023-11-29 04:35:04,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 43.0) internal successors, (1075), 25 states have internal predecessors, (1075), 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) [2023-11-29 04:35:04,440 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 43.0) internal successors, (1075), 25 states have internal predecessors, (1075), 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) [2023-11-29 04:35:04,440 INFO L175 Difference]: Start difference. First operand has 133 places, 165 transitions, 1690 flow. Second operand 24 states and 471 transitions. [2023-11-29 04:35:04,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 378 transitions, 3842 flow [2023-11-29 04:35:04,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 378 transitions, 3622 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-11-29 04:35:04,481 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 2053 flow [2023-11-29 04:35:04,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2053, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2023-11-29 04:35:04,482 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 105 predicate places. [2023-11-29 04:35:04,482 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 2053 flow [2023-11-29 04:35:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.466666666666665) internal successors, (247), 15 states have internal predecessors, (247), 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) [2023-11-29 04:35:04,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:35:04,482 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2023-11-29 04:35:04,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:35:04,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:35:04,685 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 04:35:04,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2025560221, now seen corresponding path program 2 times [2023-11-29 04:35:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:35:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983806783] [2023-11-29 04:35:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:35:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:35:05,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:35:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983806783] [2023-11-29 04:35:05,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983806783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400944889] [2023-11-29 04:35:05,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:35:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:35:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:35:05,269 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:35:05,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:35:05,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:35:05,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:35:05,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:35:05,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 04:35:05,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 04:35:05,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400944889] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:35:05,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:35:05,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2023-11-29 04:35:05,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804509651] [2023-11-29 04:35:05,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:35:05,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 04:35:05,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:35:05,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 04:35:05,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:35:05,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-29 04:35:05,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 2053 flow. Second operand has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 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) [2023-11-29 04:35:05,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:35:05,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-29 04:35:05,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:35:06,148 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2023-11-29 04:35:06,148 INFO L125 PetriNetUnfolderBase]: For 1919/1919 co-relation queries the response was YES. [2023-11-29 04:35:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 225 events. 15/225 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 695 event pairs, 0 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 1310. Up to 70 conditions per place. [2023-11-29 04:35:06,149 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 0 selfloop transitions, 0 changer transitions 157/157 dead transitions. [2023-11-29 04:35:06,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2502 flow [2023-11-29 04:35:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:35:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:35:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 433 transitions. [2023-11-29 04:35:06,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33565891472868215 [2023-11-29 04:35:06,151 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 433 transitions. [2023-11-29 04:35:06,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 433 transitions. [2023-11-29 04:35:06,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:35:06,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 433 transitions. [2023-11-29 04:35:06,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 14.433333333333334) internal successors, (433), 30 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:35:06,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 43.0) internal successors, (1333), 31 states have internal predecessors, (1333), 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) [2023-11-29 04:35:06,157 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 43.0) internal successors, (1333), 31 states have internal predecessors, (1333), 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) [2023-11-29 04:35:06,157 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 2053 flow. Second operand 30 states and 433 transitions. [2023-11-29 04:35:06,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2502 flow [2023-11-29 04:35:06,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1658 flow, removed 97 selfloop flow, removed 30 redundant places. [2023-11-29 04:35:06,167 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2023-11-29 04:35:06,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2023-11-29 04:35:06,168 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2023-11-29 04:35:06,168 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2023-11-29 04:35:06,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 13.096774193548388) internal successors, (406), 31 states have internal predecessors, (406), 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) [2023-11-29 04:35:06,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-11-29 04:35:06,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-11-29 04:35:06,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-11-29 04:35:06,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-11-29 04:35:06,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-11-29 04:35:06,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-11-29 04:35:06,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-11-29 04:35:06,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-11-29 04:35:06,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:35:06,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:35:06,374 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:06,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:35:06,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:35:06,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:35:06 BasicIcfg [2023-11-29 04:35:06,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:35:06,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:35:06,385 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:35:06,386 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:35:06,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:34:48" (3/4) ... [2023-11-29 04:35:06,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:35:06,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 04:35:06,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 04:35:06,399 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2023-11-29 04:35:06,400 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-29 04:35:06,400 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 04:35:06,401 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:35:06,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:35:06,492 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:35:06,492 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:35:06,493 INFO L158 Benchmark]: Toolchain (without parser) took 19558.00ms. Allocated memory was 169.9MB in the beginning and 388.0MB in the end (delta: 218.1MB). Free memory was 139.2MB in the beginning and 194.9MB in the end (delta: -55.7MB). Peak memory consumption was 161.2MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,493 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:35:06,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.26ms. Allocated memory is still 169.9MB. Free memory was 139.2MB in the beginning and 128.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 169.9MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,495 INFO L158 Benchmark]: Boogie Preprocessor took 56.46ms. Allocated memory is still 169.9MB. Free memory was 125.9MB in the beginning and 123.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,495 INFO L158 Benchmark]: RCFGBuilder took 722.85ms. Allocated memory is still 169.9MB. Free memory was 123.3MB in the beginning and 98.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,495 INFO L158 Benchmark]: TraceAbstraction took 18368.69ms. Allocated memory was 169.9MB in the beginning and 388.0MB in the end (delta: 218.1MB). Free memory was 98.2MB in the beginning and 200.1MB in the end (delta: -101.9MB). Peak memory consumption was 119.3MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,496 INFO L158 Benchmark]: Witness Printer took 107.17ms. Allocated memory is still 388.0MB. Free memory was 200.1MB in the beginning and 194.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:35:06,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.26ms. Allocated memory is still 169.9MB. Free memory was 139.2MB in the beginning and 128.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 169.9MB. Free memory was 128.0MB in the beginning and 125.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.46ms. Allocated memory is still 169.9MB. Free memory was 125.9MB in the beginning and 123.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 722.85ms. Allocated memory is still 169.9MB. Free memory was 123.3MB in the beginning and 98.6MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18368.69ms. Allocated memory was 169.9MB in the beginning and 388.0MB in the end (delta: 218.1MB). Free memory was 98.2MB in the beginning and 200.1MB in the end (delta: -101.9MB). Peak memory consumption was 119.3MB. Max. memory is 16.1GB. * Witness Printer took 107.17ms. Allocated memory is still 388.0MB. Free memory was 200.1MB in the beginning and 194.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: 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: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: 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, 58 locations, 14 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: 18.3s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2315 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2221 mSDsluCounter, 2143 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2124 mSDsCounter, 266 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6089 IncrementalHoareTripleChecker+Invalid, 6355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 266 mSolverCounterUnsat, 19 mSDtfsCounter, 6089 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 699 GetRequests, 361 SyntacticMatches, 9 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2206 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=17, InterpolantAutomatonStates: 227, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 539 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 729 ConstructedInterpolants, 0 QuantifiedInterpolants, 2863 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1536 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 634/1172 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:35:06,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0553a5ea-3aba-4807-85d8-6b77ec9e7db7/bin/uautomizer-verify-BQ2R08f2Ya/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