./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:51:15,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:51:15,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:51:15,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:51:15,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:51:16,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:51:16,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:51:16,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:51:16,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:51:16,032 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:51:16,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:51:16,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:51:16,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:51:16,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:51:16,036 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:51:16,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:51:16,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:51:16,038 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:51:16,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:51:16,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:51:16,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:51:16,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:51:16,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:51:16,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:51:16,042 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:51:16,043 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:51:16,043 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:51:16,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:51:16,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:51:16,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:51:16,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:51:16,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:51:16,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:51:16,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:51:16,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:51:16,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:51:16,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:51:16,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:51:16,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:51:16,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:51:16,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:51:16,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:51:16,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:51:16,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:51:16,054 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_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-08 18:51:16,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:51:16,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:51:16,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:51:16,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:51:16,480 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:51:16,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c Unable to find full path for "g++" [2024-11-08 18:51:19,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:51:19,497 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:51:19,498 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-08 18:51:19,510 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/data/282d509b0/28c4787704a641329bd51bd4d5552254/FLAGf2f4dc28c [2024-11-08 18:51:19,531 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/data/282d509b0/28c4787704a641329bd51bd4d5552254 [2024-11-08 18:51:19,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:51:19,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:51:19,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:51:19,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:51:19,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:51:19,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:51:19" (1/1) ... [2024-11-08 18:51:19,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be42096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:19, skipping insertion in model container [2024-11-08 18:51:19,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:51:19" (1/1) ... [2024-11-08 18:51:19,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:51:19,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:51:19,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:51:19,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:51:20,006 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:51:20,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20 WrapperNode [2024-11-08 18:51:20,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:51:20,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:51:20,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:51:20,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:51:20,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,075 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-11-08 18:51:20,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:51:20,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:51:20,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:51:20,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:51:20,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,137 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:51:20,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:51:20,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:51:20,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:51:20,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:51:20,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (1/1) ... [2024-11-08 18:51:20,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:51:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:20,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:51:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:51:20,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:51:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:51:20,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:51:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:51:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:51:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:51:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:51:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:51:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:51:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:51:20,284 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:51:20,428 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:51:20,432 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:51:20,926 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:51:20,926 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:51:21,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:51:21,270 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:51:21,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:51:21 BoogieIcfgContainer [2024-11-08 18:51:21,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:51:21,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:51:21,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:51:21,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:51:21,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:51:19" (1/3) ... [2024-11-08 18:51:21,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8f903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:51:21, skipping insertion in model container [2024-11-08 18:51:21,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:51:20" (2/3) ... [2024-11-08 18:51:21,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8f903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:51:21, skipping insertion in model container [2024-11-08 18:51:21,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:51:21" (3/3) ... [2024-11-08 18:51:21,289 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-08 18:51:21,315 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:51:21,317 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 18:51:21,317 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:51:21,460 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:51:21,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 143 flow [2024-11-08 18:51:21,570 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-08 18:51:21,570 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 18:51:21,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 9/58 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 188 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-11-08 18:51:21,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 61 transitions, 143 flow [2024-11-08 18:51:21,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 56 transitions, 127 flow [2024-11-08 18:51:21,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:51:21,610 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3226bbf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:51:21,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-08 18:51:21,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:51:21,623 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-08 18:51:21,623 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:51:21,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:21,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:21,625 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:21,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:21,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2075351613, now seen corresponding path program 1 times [2024-11-08 18:51:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:21,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551614728] [2024-11-08 18:51:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:22,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551614728] [2024-11-08 18:51:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551614728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:22,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:51:22,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:51:22,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464806932] [2024-11-08 18:51:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:22,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:51:22,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:51:22,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:51:22,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:22,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:22,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:22,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:24,063 INFO L124 PetriNetUnfolderBase]: 6813/9814 cut-off events. [2024-11-08 18:51:24,063 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-11-08 18:51:24,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17970 conditions, 9814 events. 6813/9814 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 60574 event pairs, 1294 based on Foata normal form. 0/5087 useless extension candidates. Maximal degree in co-relation 17089. Up to 7835 conditions per place. [2024-11-08 18:51:24,228 INFO L140 encePairwiseOnDemand]: 42/61 looper letters, 42 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-08 18:51:24,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 269 flow [2024-11-08 18:51:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:51:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:51:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-08 18:51:24,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7595628415300546 [2024-11-08 18:51:24,255 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 127 flow. Second operand 3 states and 139 transitions. [2024-11-08 18:51:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 269 flow [2024-11-08 18:51:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 253 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 18:51:24,275 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 187 flow [2024-11-08 18:51:24,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2024-11-08 18:51:24,287 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-11-08 18:51:24,288 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 187 flow [2024-11-08 18:51:24,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:24,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:24,289 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:24,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:51:24,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:24,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1941936358, now seen corresponding path program 1 times [2024-11-08 18:51:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:24,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307573172] [2024-11-08 18:51:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:24,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:24,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307573172] [2024-11-08 18:51:24,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307573172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:24,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179089129] [2024-11-08 18:51:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:24,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:24,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:24,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:51:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:24,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:51:24,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:24,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:51:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179089129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:24,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:51:24,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 18:51:24,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934277702] [2024-11-08 18:51:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:24,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:51:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:51:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:51:24,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:24,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-08 18:51:24,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:24,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:24,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:25,850 INFO L124 PetriNetUnfolderBase]: 4292/6352 cut-off events. [2024-11-08 18:51:25,850 INFO L125 PetriNetUnfolderBase]: For 1035/1035 co-relation queries the response was YES. [2024-11-08 18:51:25,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 6352 events. 4292/6352 cut-off events. For 1035/1035 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 38853 event pairs, 1597 based on Foata normal form. 0/3506 useless extension candidates. Maximal degree in co-relation 4598. Up to 5046 conditions per place. [2024-11-08 18:51:25,955 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 35 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-08 18:51:25,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 247 flow [2024-11-08 18:51:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:51:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:51:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-08 18:51:25,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-11-08 18:51:25,959 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 187 flow. Second operand 3 states and 111 transitions. [2024-11-08 18:51:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 247 flow [2024-11-08 18:51:25,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:25,974 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 170 flow [2024-11-08 18:51:25,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2024-11-08 18:51:25,976 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2024-11-08 18:51:25,977 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 170 flow [2024-11-08 18:51:25,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-11-08 18:51:25,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:25,979 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:26,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:51:26,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:26,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2080919625, now seen corresponding path program 1 times [2024-11-08 18:51:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60595832] [2024-11-08 18:51:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60595832] [2024-11-08 18:51:26,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60595832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752653895] [2024-11-08 18:51:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:26,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:26,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:26,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:51:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:26,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:51:26,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:26,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:26,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752653895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:26,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:26,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-08 18:51:26,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477386902] [2024-11-08 18:51:26,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:26,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:51:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:51:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:51:26,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:26,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:26,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:26,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:26,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:30,161 INFO L124 PetriNetUnfolderBase]: 14511/22367 cut-off events. [2024-11-08 18:51:30,161 INFO L125 PetriNetUnfolderBase]: For 3591/3591 co-relation queries the response was YES. [2024-11-08 18:51:30,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50158 conditions, 22367 events. 14511/22367 cut-off events. For 3591/3591 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 150974 event pairs, 664 based on Foata normal form. 0/13889 useless extension candidates. Maximal degree in co-relation 50150. Up to 10687 conditions per place. [2024-11-08 18:51:30,417 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 99 selfloop transitions, 49 changer transitions 0/171 dead transitions. [2024-11-08 18:51:30,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 171 transitions, 815 flow [2024-11-08 18:51:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:51:30,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 18:51:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-11-08 18:51:30,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7962529274004684 [2024-11-08 18:51:30,423 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 170 flow. Second operand 7 states and 340 transitions. [2024-11-08 18:51:30,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 171 transitions, 815 flow [2024-11-08 18:51:30,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 171 transitions, 814 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:30,435 INFO L231 Difference]: Finished difference. Result has 62 places, 101 transitions, 564 flow [2024-11-08 18:51:30,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=62, PETRI_TRANSITIONS=101} [2024-11-08 18:51:30,438 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-11-08 18:51:30,439 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 101 transitions, 564 flow [2024-11-08 18:51:30,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:30,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:30,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:30,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:51:30,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:30,645 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:30,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:30,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2039054954, now seen corresponding path program 1 times [2024-11-08 18:51:30,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:30,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155508999] [2024-11-08 18:51:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:30,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155508999] [2024-11-08 18:51:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155508999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:30,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:51:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:51:30,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991376399] [2024-11-08 18:51:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:30,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:51:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:51:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:51:30,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:30,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 101 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:30,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:30,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:30,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:34,634 INFO L124 PetriNetUnfolderBase]: 16928/26520 cut-off events. [2024-11-08 18:51:34,634 INFO L125 PetriNetUnfolderBase]: For 58366/58366 co-relation queries the response was YES. [2024-11-08 18:51:34,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81301 conditions, 26520 events. 16928/26520 cut-off events. For 58366/58366 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 186709 event pairs, 1292 based on Foata normal form. 1218/23826 useless extension candidates. Maximal degree in co-relation 81288. Up to 16096 conditions per place. [2024-11-08 18:51:35,011 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 103 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2024-11-08 18:51:35,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 142 transitions, 999 flow [2024-11-08 18:51:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:51:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:51:35,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-08 18:51:35,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7295081967213115 [2024-11-08 18:51:35,015 INFO L175 Difference]: Start difference. First operand has 62 places, 101 transitions, 564 flow. Second operand 4 states and 178 transitions. [2024-11-08 18:51:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 142 transitions, 999 flow [2024-11-08 18:51:35,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 968 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:35,228 INFO L231 Difference]: Finished difference. Result has 66 places, 110 transitions, 724 flow [2024-11-08 18:51:35,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=66, PETRI_TRANSITIONS=110} [2024-11-08 18:51:35,230 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2024-11-08 18:51:35,232 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 110 transitions, 724 flow [2024-11-08 18:51:35,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:35,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:35,232 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:35,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:51:35,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:35,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2143976854, now seen corresponding path program 1 times [2024-11-08 18:51:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154417813] [2024-11-08 18:51:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:35,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154417813] [2024-11-08 18:51:35,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154417813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:35,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:51:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:51:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83302616] [2024-11-08 18:51:35,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:35,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:51:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:51:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:51:35,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:35,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 110 transitions, 724 flow. Second operand has 4 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) [2024-11-08 18:51:35,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:35,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:35,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:38,996 INFO L124 PetriNetUnfolderBase]: 19378/30677 cut-off events. [2024-11-08 18:51:38,996 INFO L125 PetriNetUnfolderBase]: For 106397/106397 co-relation queries the response was YES. [2024-11-08 18:51:39,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101446 conditions, 30677 events. 19378/30677 cut-off events. For 106397/106397 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 226933 event pairs, 1441 based on Foata normal form. 1045/26992 useless extension candidates. Maximal degree in co-relation 101430. Up to 16650 conditions per place. [2024-11-08 18:51:39,533 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 112 selfloop transitions, 25 changer transitions 0/160 dead transitions. [2024-11-08 18:51:39,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 160 transitions, 1279 flow [2024-11-08 18:51:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:51:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:51:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-08 18:51:39,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7295081967213115 [2024-11-08 18:51:39,541 INFO L175 Difference]: Start difference. First operand has 66 places, 110 transitions, 724 flow. Second operand 4 states and 178 transitions. [2024-11-08 18:51:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 160 transitions, 1279 flow [2024-11-08 18:51:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 160 transitions, 1254 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:39,925 INFO L231 Difference]: Finished difference. Result has 70 places, 122 transitions, 998 flow [2024-11-08 18:51:39,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=998, PETRI_PLACES=70, PETRI_TRANSITIONS=122} [2024-11-08 18:51:39,930 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-11-08 18:51:39,930 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 122 transitions, 998 flow [2024-11-08 18:51:39,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2024-11-08 18:51:39,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:39,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:39,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:51:39,932 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:39,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1288193714, now seen corresponding path program 1 times [2024-11-08 18:51:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987671063] [2024-11-08 18:51:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:40,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987671063] [2024-11-08 18:51:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987671063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:40,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:51:40,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:51:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489525249] [2024-11-08 18:51:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:40,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:51:40,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:51:40,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:51:40,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 122 transitions, 998 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:40,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:40,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:44,518 INFO L124 PetriNetUnfolderBase]: 22336/35333 cut-off events. [2024-11-08 18:51:44,519 INFO L125 PetriNetUnfolderBase]: For 179251/179251 co-relation queries the response was YES. [2024-11-08 18:51:44,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127801 conditions, 35333 events. 22336/35333 cut-off events. For 179251/179251 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 262402 event pairs, 1603 based on Foata normal form. 1331/31476 useless extension candidates. Maximal degree in co-relation 127782. Up to 17373 conditions per place. [2024-11-08 18:51:45,102 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 115 selfloop transitions, 34 changer transitions 0/172 dead transitions. [2024-11-08 18:51:45,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 172 transitions, 1607 flow [2024-11-08 18:51:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:51:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:51:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-08 18:51:45,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7295081967213115 [2024-11-08 18:51:45,105 INFO L175 Difference]: Start difference. First operand has 70 places, 122 transitions, 998 flow. Second operand 4 states and 178 transitions. [2024-11-08 18:51:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 172 transitions, 1607 flow [2024-11-08 18:51:45,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 172 transitions, 1540 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:45,731 INFO L231 Difference]: Finished difference. Result has 74 places, 134 transitions, 1296 flow [2024-11-08 18:51:45,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1296, PETRI_PLACES=74, PETRI_TRANSITIONS=134} [2024-11-08 18:51:45,733 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-11-08 18:51:45,733 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 134 transitions, 1296 flow [2024-11-08 18:51:45,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:45,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:45,734 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:45,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:51:45,735 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:45,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash 953771307, now seen corresponding path program 1 times [2024-11-08 18:51:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:45,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116325298] [2024-11-08 18:51:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:45,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116325298] [2024-11-08 18:51:45,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116325298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:45,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615196176] [2024-11-08 18:51:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:45,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:45,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:45,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:45,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:51:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:45,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:51:45,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:45,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:51:45,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615196176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:51:45,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:51:45,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-11-08 18:51:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245405098] [2024-11-08 18:51:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:51:45,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:51:45,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:51:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:51:45,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:45,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 134 transitions, 1296 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:45,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:45,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:45,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:52,257 INFO L124 PetriNetUnfolderBase]: 29494/47207 cut-off events. [2024-11-08 18:51:52,258 INFO L125 PetriNetUnfolderBase]: For 329979/330665 co-relation queries the response was YES. [2024-11-08 18:51:52,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180035 conditions, 47207 events. 29494/47207 cut-off events. For 329979/330665 co-relation queries the response was YES. Maximal size of possible extension queue 1916. Compared 371683 event pairs, 3193 based on Foata normal form. 2082/41593 useless extension candidates. Maximal degree in co-relation 180013. Up to 21940 conditions per place. [2024-11-08 18:51:52,820 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 135 selfloop transitions, 59 changer transitions 0/217 dead transitions. [2024-11-08 18:51:52,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 217 transitions, 2488 flow [2024-11-08 18:51:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:51:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:51:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2024-11-08 18:51:52,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7786885245901639 [2024-11-08 18:51:52,822 INFO L175 Difference]: Start difference. First operand has 74 places, 134 transitions, 1296 flow. Second operand 4 states and 190 transitions. [2024-11-08 18:51:52,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 217 transitions, 2488 flow [2024-11-08 18:51:54,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 217 transitions, 2385 flow, removed 48 selfloop flow, removed 1 redundant places. [2024-11-08 18:51:54,471 INFO L231 Difference]: Finished difference. Result has 78 places, 178 transitions, 2161 flow [2024-11-08 18:51:54,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2161, PETRI_PLACES=78, PETRI_TRANSITIONS=178} [2024-11-08 18:51:54,472 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 21 predicate places. [2024-11-08 18:51:54,472 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 178 transitions, 2161 flow [2024-11-08 18:51:54,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:54,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:54,473 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:54,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:51:54,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 18:51:54,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:51:54,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1004954061, now seen corresponding path program 1 times [2024-11-08 18:51:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:54,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045593363] [2024-11-08 18:51:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:54,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045593363] [2024-11-08 18:51:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045593363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678992813] [2024-11-08 18:51:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:54,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:54,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:54,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:54,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:51:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:54,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:51:54,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:54,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678992813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:55,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:55,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 18:51:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103301734] [2024-11-08 18:51:55,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:55,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:51:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:51:55,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:51:55,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:51:55,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 178 transitions, 2161 flow. Second operand has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:55,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:55,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:51:55,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:52:11,922 INFO L124 PetriNetUnfolderBase]: 64732/106615 cut-off events. [2024-11-08 18:52:11,922 INFO L125 PetriNetUnfolderBase]: For 1000455/1000455 co-relation queries the response was YES. [2024-11-08 18:52:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411253 conditions, 106615 events. 64732/106615 cut-off events. For 1000455/1000455 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 928343 event pairs, 3570 based on Foata normal form. 11550/101495 useless extension candidates. Maximal degree in co-relation 411228. Up to 38761 conditions per place. [2024-11-08 18:52:13,564 INFO L140 encePairwiseOnDemand]: 45/61 looper letters, 235 selfloop transitions, 202 changer transitions 0/460 dead transitions. [2024-11-08 18:52:13,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 460 transitions, 5693 flow [2024-11-08 18:52:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:52:13,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 18:52:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 448 transitions. [2024-11-08 18:52:13,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8160291438979964 [2024-11-08 18:52:13,568 INFO L175 Difference]: Start difference. First operand has 78 places, 178 transitions, 2161 flow. Second operand 9 states and 448 transitions. [2024-11-08 18:52:13,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 460 transitions, 5693 flow [2024-11-08 18:52:24,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 460 transitions, 5585 flow, removed 54 selfloop flow, removed 0 redundant places. [2024-11-08 18:52:24,136 INFO L231 Difference]: Finished difference. Result has 92 places, 335 transitions, 5376 flow [2024-11-08 18:52:24,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5376, PETRI_PLACES=92, PETRI_TRANSITIONS=335} [2024-11-08 18:52:24,137 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-11-08 18:52:24,138 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 335 transitions, 5376 flow [2024-11-08 18:52:24,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:24,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:52:24,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:52:24,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:52:24,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:24,343 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-08 18:52:24,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:52:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash -217723610, now seen corresponding path program 1 times [2024-11-08 18:52:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:52:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786451135] [2024-11-08 18:52:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:52:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:52:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:52:24,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786451135] [2024-11-08 18:52:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786451135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:52:24,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697611215] [2024-11-08 18:52:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:52:24,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:52:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:52:24,424 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:52:24,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af7b8a99-77eb-4351-baaa-ba7018cad14d/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:52:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:52:24,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:52:24,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:52:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:52:24,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:52:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:52:24,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697611215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:52:24,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:52:24,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 18:52:24,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732861548] [2024-11-08 18:52:24,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:52:24,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 18:52:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:52:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 18:52:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:52:24,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2024-11-08 18:52:24,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 335 transitions, 5376 flow. Second operand has 9 states, 9 states have (on average 28.333333333333332) internal successors, (255), 9 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:52:24,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:52:24,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2024-11-08 18:52:24,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand