./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.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_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/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_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/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_086d174f-d819-488d-96aa-d842f331eec6/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 d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:54:47,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:54:47,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:54:47,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:54:47,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:54:48,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:54:48,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:54:48,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:54:48,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:54:48,031 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:54:48,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:54:48,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:54:48,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:54:48,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:54:48,034 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:54:48,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:54:48,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:54:48,035 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:54:48,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:54:48,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:54:48,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:54:48,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:54:48,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:54:48,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:54:48,041 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:54:48,041 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:54:48,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:54:48,042 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:54:48,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:54:48,042 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:54:48,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:54:48,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:54:48,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:54:48,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:54:48,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:48,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:54:48,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:54:48,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:54:48,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:54:48,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:54:48,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:54:48,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:54:48,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:54:48,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:54:48,049 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_086d174f-d819-488d-96aa-d842f331eec6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a575889db2e07e0d6a3fd2f8635ba39d2afc2713d706bcd4d4aaa862bed792 [2024-11-08 18:54:48,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:54:48,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:54:48,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:54:48,351 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:54:48,352 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:54:48,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c Unable to find full path for "g++" [2024-11-08 18:54:50,339 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:54:50,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:54:50,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/sv-benchmarks/c/weaver/popl20-send-receive-alt.wvr.c [2024-11-08 18:54:50,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/data/fd3444c0c/0661606278764a0a81bf01bb1e881d48/FLAG6cd703dfb [2024-11-08 18:54:50,922 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/data/fd3444c0c/0661606278764a0a81bf01bb1e881d48 [2024-11-08 18:54:50,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:54:50,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:54:50,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:50,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:54:50,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:54:50,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:50" (1/1) ... [2024-11-08 18:54:50,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d45340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:50, skipping insertion in model container [2024-11-08 18:54:50,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:54:50" (1/1) ... [2024-11-08 18:54:50,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:54:51,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:51,204 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:54:51,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:54:51,250 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:54:51,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51 WrapperNode [2024-11-08 18:54:51,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:54:51,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:51,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:54:51,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:54:51,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,297 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2024-11-08 18:54:51,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:54:51,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:54:51,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:54:51,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:54:51,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,331 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:54:51,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:54:51,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:54:51,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:54:51,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:54:51,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (1/1) ... [2024-11-08 18:54:51,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:54:51,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:51,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:54:51,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:54:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:54:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:54:51,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:54:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:54:51,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:54:51,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:54:51,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:54:51,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:54:51,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:54:51,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:54:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:54:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:54:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:54:51,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:54:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:54:51,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:54:51,439 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 18:54:51,583 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:54:51,588 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:54:51,977 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:54:51,978 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:54:52,296 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:54:52,298 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 18:54:52,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:52 BoogieIcfgContainer [2024-11-08 18:54:52,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:54:52,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:54:52,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:54:52,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:54:52,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:54:50" (1/3) ... [2024-11-08 18:54:52,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b2241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:52, skipping insertion in model container [2024-11-08 18:54:52,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:54:51" (2/3) ... [2024-11-08 18:54:52,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9b2241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:54:52, skipping insertion in model container [2024-11-08 18:54:52,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:54:52" (3/3) ... [2024-11-08 18:54:52,314 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2024-11-08 18:54:52,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:54:52,333 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-08 18:54:52,333 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:54:52,420 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:54:52,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 45 transitions, 104 flow [2024-11-08 18:54:52,493 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-11-08 18:54:52,494 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 18:54:52,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 7/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 93 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-08 18:54:52,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 45 transitions, 104 flow [2024-11-08 18:54:52,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 41 transitions, 91 flow [2024-11-08 18:54:52,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:54:52,517 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;@52dba0ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:54:52,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-08 18:54:52,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:54:52,521 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-08 18:54:52,522 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:54:52,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:52,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 18:54:52,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:52,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 14804335, now seen corresponding path program 1 times [2024-11-08 18:54:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:52,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620161325] [2024-11-08 18:54:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:52,884 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 18:54:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:52,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620161325] [2024-11-08 18:54:52,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620161325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:52,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:52,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:54:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95724057] [2024-11-08 18:54:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:52,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:54:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:54:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:54:53,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 18:54:53,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:54:53,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:53,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 18:54:53,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:53,331 INFO L124 PetriNetUnfolderBase]: 348/624 cut-off events. [2024-11-08 18:54:53,331 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-08 18:54:53,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 624 events. 348/624 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2843 event pairs, 283 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1131. Up to 560 conditions per place. [2024-11-08 18:54:53,340 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 29 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-11-08 18:54:53,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 157 flow [2024-11-08 18:54:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:54:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:54:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-08 18:54:53,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-08 18:54:53,360 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 91 flow. Second operand 4 states and 78 transitions. [2024-11-08 18:54:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 157 flow [2024-11-08 18:54:53,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:54:53,369 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 109 flow [2024-11-08 18:54:53,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2024-11-08 18:54:53,375 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-11-08 18:54:53,377 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 109 flow [2024-11-08 18:54:53,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 18:54:53,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:53,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:53,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:54:53,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:53,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash -598656954, now seen corresponding path program 1 times [2024-11-08 18:54:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:53,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742464837] [2024-11-08 18:54:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:53,562 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 18:54:53,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742464837] [2024-11-08 18:54:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742464837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:53,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:53,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:54:53,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280321590] [2024-11-08 18:54:53,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:53,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:54:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:54:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:53,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:54:53,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:54:53,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:53,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:54:53,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:53,816 INFO L124 PetriNetUnfolderBase]: 435/793 cut-off events. [2024-11-08 18:54:53,816 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-08 18:54:53,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 793 events. 435/793 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3735 event pairs, 202 based on Foata normal form. 22/548 useless extension candidates. Maximal degree in co-relation 1519. Up to 465 conditions per place. [2024-11-08 18:54:53,823 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 42 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2024-11-08 18:54:53,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 236 flow [2024-11-08 18:54:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:54:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:54:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-08 18:54:53,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-08 18:54:53,825 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 109 flow. Second operand 3 states and 84 transitions. [2024-11-08 18:54:53,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 236 flow [2024-11-08 18:54:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:54:53,827 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 131 flow [2024-11-08 18:54:53,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2024-11-08 18:54:53,828 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-11-08 18:54:53,829 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 131 flow [2024-11-08 18:54:53,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:54:53,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:53,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:54:53,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:54:53,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:53,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1247509300, now seen corresponding path program 1 times [2024-11-08 18:54:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407415479] [2024-11-08 18:54:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:53,976 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 18:54:53,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407415479] [2024-11-08 18:54:53,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407415479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:53,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870519469] [2024-11-08 18:54:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:53,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:53,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:54:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:54,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:54:54,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:54,144 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 18:54:54,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:54:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870519469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:54:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 18:54:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810070630] [2024-11-08 18:54:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:54,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:54:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:54:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:54:54,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 18:54:54,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:54,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:54,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 18:54:54,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:54,420 INFO L124 PetriNetUnfolderBase]: 435/789 cut-off events. [2024-11-08 18:54:54,420 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-08 18:54:54,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 789 events. 435/789 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3726 event pairs, 364 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 1670. Up to 725 conditions per place. [2024-11-08 18:54:54,426 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 27 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-08 18:54:54,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 195 flow [2024-11-08 18:54:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:54:54,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:54:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-08 18:54:54,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-11-08 18:54:54,429 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 131 flow. Second operand 6 states and 93 transitions. [2024-11-08 18:54:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 195 flow [2024-11-08 18:54:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:54:54,431 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 138 flow [2024-11-08 18:54:54,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-08 18:54:54,435 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-08 18:54:54,435 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 138 flow [2024-11-08 18:54:54,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:54:54,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:54,435 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 18:54:54,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:54:54,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:54,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:54,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash 18083096, now seen corresponding path program 1 times [2024-11-08 18:54:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:54,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032128551] [2024-11-08 18:54:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:54,801 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 18:54:54,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:54,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032128551] [2024-11-08 18:54:54,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032128551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:54,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602933156] [2024-11-08 18:54:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:54,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:54,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:54:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:54,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:54:54,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:54,937 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 18:54:54,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:54,995 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 18:54:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602933156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:54,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 18:54:54,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761132498] [2024-11-08 18:54:54,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:54,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:54:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:54:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:54:55,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 18:54:55,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 138 flow. Second operand has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 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 18:54:55,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:55,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 18:54:55,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:55,346 INFO L124 PetriNetUnfolderBase]: 441/810 cut-off events. [2024-11-08 18:54:55,346 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-11-08 18:54:55,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 810 events. 441/810 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3896 event pairs, 364 based on Foata normal form. 3/603 useless extension candidates. Maximal degree in co-relation 1650. Up to 732 conditions per place. [2024-11-08 18:54:55,352 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 30 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-08 18:54:55,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 278 flow [2024-11-08 18:54:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:54:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:54:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-11-08 18:54:55,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-11-08 18:54:55,354 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 138 flow. Second operand 10 states and 144 transitions. [2024-11-08 18:54:55,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 278 flow [2024-11-08 18:54:55,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 248 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-08 18:54:55,360 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 206 flow [2024-11-08 18:54:55,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=206, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-08 18:54:55,362 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-08 18:54:55,362 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 206 flow [2024-11-08 18:54:55,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 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 18:54:55,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:55,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:55,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:54:55,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:55,568 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:55,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1305794916, now seen corresponding path program 1 times [2024-11-08 18:54:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:55,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426774506] [2024-11-08 18:54:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:55,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:55,651 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 18:54:55,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426774506] [2024-11-08 18:54:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426774506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:55,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:55,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:54:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699744412] [2024-11-08 18:54:55,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:55,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:54:55,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:54:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:55,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:54:55,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:54:55,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:55,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:54:55,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:55,795 INFO L124 PetriNetUnfolderBase]: 357/671 cut-off events. [2024-11-08 18:54:55,798 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-08 18:54:55,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 671 events. 357/671 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3059 event pairs, 116 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 1400. Up to 445 conditions per place. [2024-11-08 18:54:55,805 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 47 selfloop transitions, 1 changer transitions 2/59 dead transitions. [2024-11-08 18:54:55,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 323 flow [2024-11-08 18:54:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:54:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:54:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-11-08 18:54:55,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-11-08 18:54:55,807 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 206 flow. Second operand 3 states and 74 transitions. [2024-11-08 18:54:55,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 323 flow [2024-11-08 18:54:55,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 312 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 18:54:55,812 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 198 flow [2024-11-08 18:54:55,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-11-08 18:54:55,813 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-11-08 18:54:55,813 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 198 flow [2024-11-08 18:54:55,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:54:55,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:55,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:55,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:54:55,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:55,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1305794915, now seen corresponding path program 1 times [2024-11-08 18:54:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333773915] [2024-11-08 18:54:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:55,935 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 18:54:55,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:55,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333773915] [2024-11-08 18:54:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333773915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:55,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:55,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:54:55,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016951612] [2024-11-08 18:54:55,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:55,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:54:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:55,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:54:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:54:55,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 18:54:55,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:54:55,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:55,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 18:54:55,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:56,152 INFO L124 PetriNetUnfolderBase]: 424/802 cut-off events. [2024-11-08 18:54:56,153 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-11-08 18:54:56,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 802 events. 424/802 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3648 event pairs, 352 based on Foata normal form. 11/705 useless extension candidates. Maximal degree in co-relation 1720. Up to 600 conditions per place. [2024-11-08 18:54:56,157 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 40 selfloop transitions, 2 changer transitions 16/65 dead transitions. [2024-11-08 18:54:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 348 flow [2024-11-08 18:54:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:54:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:54:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-11-08 18:54:56,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4311111111111111 [2024-11-08 18:54:56,160 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 198 flow. Second operand 5 states and 97 transitions. [2024-11-08 18:54:56,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 348 flow [2024-11-08 18:54:56,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:54:56,165 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 206 flow [2024-11-08 18:54:56,166 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-11-08 18:54:56,166 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-11-08 18:54:56,167 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 206 flow [2024-11-08 18:54:56,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 18:54:56,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:56,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:56,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:54:56,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:56,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2113370424, now seen corresponding path program 1 times [2024-11-08 18:54:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:56,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172924664] [2024-11-08 18:54:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:54:56,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172924664] [2024-11-08 18:54:56,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172924664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228539268] [2024-11-08 18:54:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:56,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:56,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:56,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:56,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:54:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:56,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:54:56,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:54:56,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:54:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228539268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:54:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-08 18:54:56,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730626069] [2024-11-08 18:54:56,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:56,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:54:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:54:56,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:54:56,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:54:56,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:54:56,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:56,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:54:56,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:56,639 INFO L124 PetriNetUnfolderBase]: 254/508 cut-off events. [2024-11-08 18:54:56,639 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-08 18:54:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 508 events. 254/508 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2161 event pairs, 154 based on Foata normal form. 56/491 useless extension candidates. Maximal degree in co-relation 1105. Up to 355 conditions per place. [2024-11-08 18:54:56,642 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 33 selfloop transitions, 7 changer transitions 6/55 dead transitions. [2024-11-08 18:54:56,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 315 flow [2024-11-08 18:54:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:54:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:54:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-08 18:54:56,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-08 18:54:56,644 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 206 flow. Second operand 4 states and 84 transitions. [2024-11-08 18:54:56,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 315 flow [2024-11-08 18:54:56,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 309 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:54:56,647 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 199 flow [2024-11-08 18:54:56,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-08 18:54:56,648 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-11-08 18:54:56,648 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 199 flow [2024-11-08 18:54:56,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:54:56,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:56,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:56,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:54:56,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:56,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:56,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:56,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2088263386, now seen corresponding path program 1 times [2024-11-08 18:54:56,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:56,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696656304] [2024-11-08 18:54:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:56,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:54:56,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:56,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696656304] [2024-11-08 18:54:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696656304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:54:56,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:54:56,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:54:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26320061] [2024-11-08 18:54:56,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:54:56,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:54:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:54:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:54:56,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 18:54:56,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:54:56,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:56,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 18:54:56,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:54:57,041 INFO L124 PetriNetUnfolderBase]: 211/394 cut-off events. [2024-11-08 18:54:57,041 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-08 18:54:57,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 394 events. 211/394 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1498 event pairs, 76 based on Foata normal form. 6/368 useless extension candidates. Maximal degree in co-relation 925. Up to 268 conditions per place. [2024-11-08 18:54:57,044 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 41 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-11-08 18:54:57,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 309 flow [2024-11-08 18:54:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:54:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:54:57,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-08 18:54:57,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-08 18:54:57,045 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 199 flow. Second operand 3 states and 65 transitions. [2024-11-08 18:54:57,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 309 flow [2024-11-08 18:54:57,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 297 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:54:57,048 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 193 flow [2024-11-08 18:54:57,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-11-08 18:54:57,051 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-11-08 18:54:57,051 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 193 flow [2024-11-08 18:54:57,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 18:54:57,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:54:57,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:54:57,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:54:57,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:54:57,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:54:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2088262332, now seen corresponding path program 1 times [2024-11-08 18:54:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:54:57,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385852795] [2024-11-08 18:54:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:54:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:54:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:54:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385852795] [2024-11-08 18:54:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385852795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:54:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376799976] [2024-11-08 18:54:57,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:54:57,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:54:57,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:54:57,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:54:57,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:54:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:54:57,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:54:57,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:54:57,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:54:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:54:58,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:54:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-08 18:54:58,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-08 18:54:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:54:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376799976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:54:58,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:54:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-08 18:54:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141809635] [2024-11-08 18:54:58,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:54:58,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 18:54:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:54:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 18:54:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:54:59,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:54:59,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 193 flow. Second operand has 21 states, 21 states have (on average 9.285714285714286) internal successors, (195), 21 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 18:54:59,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:54:59,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:54:59,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:00,926 INFO L124 PetriNetUnfolderBase]: 591/1142 cut-off events. [2024-11-08 18:55:00,927 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2024-11-08 18:55:00,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 1142 events. 591/1142 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5741 event pairs, 123 based on Foata normal form. 8/1094 useless extension candidates. Maximal degree in co-relation 2605. Up to 297 conditions per place. [2024-11-08 18:55:00,933 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 97 selfloop transitions, 35 changer transitions 4/142 dead transitions. [2024-11-08 18:55:00,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 747 flow [2024-11-08 18:55:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:55:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-08 18:55:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 271 transitions. [2024-11-08 18:55:00,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3169590643274854 [2024-11-08 18:55:00,936 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 193 flow. Second operand 19 states and 271 transitions. [2024-11-08 18:55:00,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 747 flow [2024-11-08 18:55:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 142 transitions, 743 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:55:00,940 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 457 flow [2024-11-08 18:55:00,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=457, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-08 18:55:00,941 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2024-11-08 18:55:00,941 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 457 flow [2024-11-08 18:55:00,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.285714285714286) internal successors, (195), 21 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 18:55:00,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:00,942 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 18:55:00,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:01,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 18:55:01,146 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:01,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:01,147 INFO L85 PathProgramCache]: Analyzing trace with hash -525798231, now seen corresponding path program 2 times [2024-11-08 18:55:01,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:01,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59325876] [2024-11-08 18:55:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:01,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59325876] [2024-11-08 18:55:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59325876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512369391] [2024-11-08 18:55:01,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:55:01,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:01,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:01,325 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:01,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:55:01,396 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:55:01,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:01,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:55:01,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:55:01,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:55:01,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512369391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:01,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:01,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 18:55:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011627770] [2024-11-08 18:55:01,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:01,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 18:55:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 18:55:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:01,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 457 flow. Second operand has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 15 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:01,988 INFO L124 PetriNetUnfolderBase]: 594/1168 cut-off events. [2024-11-08 18:55:01,988 INFO L125 PetriNetUnfolderBase]: For 2179/2179 co-relation queries the response was YES. [2024-11-08 18:55:01,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 1168 events. 594/1168 cut-off events. For 2179/2179 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6037 event pairs, 413 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 3384. Up to 981 conditions per place. [2024-11-08 18:55:01,997 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 53 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-11-08 18:55:01,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 700 flow [2024-11-08 18:55:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:55:01,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 18:55:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 160 transitions. [2024-11-08 18:55:01,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23703703703703705 [2024-11-08 18:55:02,000 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 457 flow. Second operand 15 states and 160 transitions. [2024-11-08 18:55:02,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 700 flow [2024-11-08 18:55:02,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 641 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-11-08 18:55:02,011 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 495 flow [2024-11-08 18:55:02,011 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=495, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-11-08 18:55:02,012 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-11-08 18:55:02,012 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 495 flow [2024-11-08 18:55:02,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.533333333333333) internal successors, (128), 15 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:02,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:02,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:02,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:55:02,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:55:02,217 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:02,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1177573907, now seen corresponding path program 1 times [2024-11-08 18:55:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168010943] [2024-11-08 18:55:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:02,388 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 18:55:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168010943] [2024-11-08 18:55:02,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168010943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:02,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345395223] [2024-11-08 18:55:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:02,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:02,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:02,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:55:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:02,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:55:02,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:55:02,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:55:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345395223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:02,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:55:02,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-08 18:55:02,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135399324] [2024-11-08 18:55:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:02,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:55:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:55:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:55:02,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:55:02,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 495 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:02,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:02,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:55:02,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:02,772 INFO L124 PetriNetUnfolderBase]: 754/1462 cut-off events. [2024-11-08 18:55:02,773 INFO L125 PetriNetUnfolderBase]: For 3586/3586 co-relation queries the response was YES. [2024-11-08 18:55:02,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 1462 events. 754/1462 cut-off events. For 3586/3586 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7772 event pairs, 244 based on Foata normal form. 64/1526 useless extension candidates. Maximal degree in co-relation 4198. Up to 489 conditions per place. [2024-11-08 18:55:02,783 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 63 selfloop transitions, 13 changer transitions 2/92 dead transitions. [2024-11-08 18:55:02,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 761 flow [2024-11-08 18:55:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:55:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:55:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-08 18:55:02,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-08 18:55:02,785 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 495 flow. Second operand 4 states and 92 transitions. [2024-11-08 18:55:02,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 761 flow [2024-11-08 18:55:02,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 671 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-08 18:55:02,796 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 499 flow [2024-11-08 18:55:02,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-08 18:55:02,797 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-11-08 18:55:02,797 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 499 flow [2024-11-08 18:55:02,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:02,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:02,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:03,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:55:03,002 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:03,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1833034328, now seen corresponding path program 1 times [2024-11-08 18:55:03,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691353828] [2024-11-08 18:55:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:03,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691353828] [2024-11-08 18:55:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691353828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607691818] [2024-11-08 18:55:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:03,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:03,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:03,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:55:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:03,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:55:03,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:55:04,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:04,129 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:55:04,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-08 18:55:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:55:04,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607691818] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:04,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:55:04,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 4] total 15 [2024-11-08 18:55:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666895358] [2024-11-08 18:55:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:04,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:55:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:55:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:55:04,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:55:04,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 18:55:04,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:04,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:55:04,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:04,532 INFO L124 PetriNetUnfolderBase]: 901/1715 cut-off events. [2024-11-08 18:55:04,532 INFO L125 PetriNetUnfolderBase]: For 6199/6199 co-relation queries the response was YES. [2024-11-08 18:55:04,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 1715 events. 901/1715 cut-off events. For 6199/6199 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 9152 event pairs, 211 based on Foata normal form. 40/1755 useless extension candidates. Maximal degree in co-relation 5549. Up to 622 conditions per place. [2024-11-08 18:55:04,545 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 70 selfloop transitions, 11 changer transitions 2/97 dead transitions. [2024-11-08 18:55:04,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 807 flow [2024-11-08 18:55:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:55:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:55:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-08 18:55:04,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-08 18:55:04,546 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 499 flow. Second operand 4 states and 88 transitions. [2024-11-08 18:55:04,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 807 flow [2024-11-08 18:55:04,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 97 transitions, 799 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-08 18:55:04,560 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 606 flow [2024-11-08 18:55:04,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-11-08 18:55:04,562 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-11-08 18:55:04,562 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 606 flow [2024-11-08 18:55:04,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 18:55:04,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:04,563 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:04,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:55:04,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:04,768 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:04,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1215833202, now seen corresponding path program 2 times [2024-11-08 18:55:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392409580] [2024-11-08 18:55:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392409580] [2024-11-08 18:55:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392409580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745789860] [2024-11-08 18:55:06,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:55:06,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:06,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:06,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:55:06,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 18:55:06,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:06,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:55:06,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:55:06,276 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:55:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745789860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:55:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2024-11-08 18:55:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176093893] [2024-11-08 18:55:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:06,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:55:06,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:55:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-08 18:55:06,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:55:06,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 18:55:06,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:06,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:55:06,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:06,601 INFO L124 PetriNetUnfolderBase]: 880/1692 cut-off events. [2024-11-08 18:55:06,601 INFO L125 PetriNetUnfolderBase]: For 7123/7123 co-relation queries the response was YES. [2024-11-08 18:55:06,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 1692 events. 880/1692 cut-off events. For 7123/7123 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9072 event pairs, 203 based on Foata normal form. 20/1712 useless extension candidates. Maximal degree in co-relation 5595. Up to 676 conditions per place. [2024-11-08 18:55:06,612 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 70 selfloop transitions, 10 changer transitions 2/96 dead transitions. [2024-11-08 18:55:06,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 96 transitions, 832 flow [2024-11-08 18:55:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:55:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:55:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-08 18:55:06,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-08 18:55:06,613 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 606 flow. Second operand 4 states and 87 transitions. [2024-11-08 18:55:06,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 96 transitions, 832 flow [2024-11-08 18:55:06,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 811 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 18:55:06,636 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 585 flow [2024-11-08 18:55:06,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=585, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-11-08 18:55:06,638 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-11-08 18:55:06,638 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 585 flow [2024-11-08 18:55:06,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 18:55:06,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:06,638 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:06,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:06,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:06,843 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:06,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash -835780561, now seen corresponding path program 1 times [2024-11-08 18:55:06,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:06,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444451952] [2024-11-08 18:55:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:55:07,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444451952] [2024-11-08 18:55:07,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444451952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:07,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834656460] [2024-11-08 18:55:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:07,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:07,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:07,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:07,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:55:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:07,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 18:55:07,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:55:07,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:55:07,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834656460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:07,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-08 18:55:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218018635] [2024-11-08 18:55:07,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:07,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:55:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:55:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-08 18:55:07,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:07,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 585 flow. Second operand has 18 states, 18 states have (on average 9.222222222222221) internal successors, (166), 18 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:07,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:07,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:07,855 INFO L124 PetriNetUnfolderBase]: 722/1411 cut-off events. [2024-11-08 18:55:07,855 INFO L125 PetriNetUnfolderBase]: For 4428/4440 co-relation queries the response was YES. [2024-11-08 18:55:07,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 1411 events. 722/1411 cut-off events. For 4428/4440 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7391 event pairs, 494 based on Foata normal form. 24/1434 useless extension candidates. Maximal degree in co-relation 4454. Up to 872 conditions per place. [2024-11-08 18:55:07,865 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 42 selfloop transitions, 11 changer transitions 33/92 dead transitions. [2024-11-08 18:55:07,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 735 flow [2024-11-08 18:55:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:55:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 18:55:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-08 18:55:07,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-11-08 18:55:07,867 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 585 flow. Second operand 10 states and 126 transitions. [2024-11-08 18:55:07,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 735 flow [2024-11-08 18:55:07,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 680 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-08 18:55:07,881 INFO L231 Difference]: Finished difference. Result has 85 places, 58 transitions, 389 flow [2024-11-08 18:55:07,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=389, PETRI_PLACES=85, PETRI_TRANSITIONS=58} [2024-11-08 18:55:07,882 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-11-08 18:55:07,882 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 58 transitions, 389 flow [2024-11-08 18:55:07,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.222222222222221) internal successors, (166), 18 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:07,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:07,882 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:07,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:55:08,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:55:08,083 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:08,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1259272637, now seen corresponding path program 1 times [2024-11-08 18:55:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936215300] [2024-11-08 18:55:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:55:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:08,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936215300] [2024-11-08 18:55:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936215300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:55:08,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:55:08,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:55:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839300026] [2024-11-08 18:55:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:55:08,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:55:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:08,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:55:08,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:55:08,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-08 18:55:08,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 58 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:55:08,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:08,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-08 18:55:08,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:08,586 INFO L124 PetriNetUnfolderBase]: 1015/1767 cut-off events. [2024-11-08 18:55:08,586 INFO L125 PetriNetUnfolderBase]: For 4671/4671 co-relation queries the response was YES. [2024-11-08 18:55:08,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 1767 events. 1015/1767 cut-off events. For 4671/4671 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8084 event pairs, 148 based on Foata normal form. 88/1855 useless extension candidates. Maximal degree in co-relation 5646. Up to 849 conditions per place. [2024-11-08 18:55:08,604 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 65 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-08 18:55:08,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 659 flow [2024-11-08 18:55:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:55:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:55:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-11-08 18:55:08,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-08 18:55:08,607 INFO L175 Difference]: Start difference. First operand has 85 places, 58 transitions, 389 flow. Second operand 4 states and 75 transitions. [2024-11-08 18:55:08,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 659 flow [2024-11-08 18:55:08,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 622 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-11-08 18:55:08,614 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 379 flow [2024-11-08 18:55:08,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-11-08 18:55:08,614 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-11-08 18:55:08,615 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 379 flow [2024-11-08 18:55:08,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 18:55:08,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:08,616 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:08,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:55:08,616 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:08,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1653982178, now seen corresponding path program 1 times [2024-11-08 18:55:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653508246] [2024-11-08 18:55:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:09,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653508246] [2024-11-08 18:55:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653508246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930435606] [2024-11-08 18:55:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:09,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:09,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:09,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:55:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:09,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 18:55:09,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:10,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:10,913 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-08 18:55:10,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 54 [2024-11-08 18:55:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:12,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930435606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:12,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:12,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-08 18:55:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487590144] [2024-11-08 18:55:12,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:12,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:55:12,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:55:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:55:12,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:12,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 379 flow. Second operand has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:12,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:12,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:12,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:16,619 INFO L124 PetriNetUnfolderBase]: 2279/4309 cut-off events. [2024-11-08 18:55:16,619 INFO L125 PetriNetUnfolderBase]: For 13793/13805 co-relation queries the response was YES. [2024-11-08 18:55:16,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13935 conditions, 4309 events. 2279/4309 cut-off events. For 13793/13805 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25770 event pairs, 573 based on Foata normal form. 152/4459 useless extension candidates. Maximal degree in co-relation 13849. Up to 1029 conditions per place. [2024-11-08 18:55:16,647 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 186 selfloop transitions, 97 changer transitions 6/296 dead transitions. [2024-11-08 18:55:16,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 296 transitions, 2179 flow [2024-11-08 18:55:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 18:55:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-08 18:55:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 537 transitions. [2024-11-08 18:55:16,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3140350877192982 [2024-11-08 18:55:16,653 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 379 flow. Second operand 38 states and 537 transitions. [2024-11-08 18:55:16,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 296 transitions, 2179 flow [2024-11-08 18:55:16,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 296 transitions, 2173 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 18:55:16,667 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1621 flow [2024-11-08 18:55:16,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1621, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2024-11-08 18:55:16,668 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-11-08 18:55:16,669 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1621 flow [2024-11-08 18:55:16,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:16,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:16,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:16,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:55:16,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:55:16,871 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:16,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1259271584, now seen corresponding path program 2 times [2024-11-08 18:55:16,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:16,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441470309] [2024-11-08 18:55:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:16,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:18,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441470309] [2024-11-08 18:55:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441470309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041689545] [2024-11-08 18:55:18,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:55:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:18,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:18,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:18,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:55:18,142 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:55:18,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:18,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:55:18,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:18,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:55:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:18,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:20,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-11-08 18:55:20,115 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2024-11-08 18:55:20,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 129 [2024-11-08 18:55:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:21,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041689545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:21,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:21,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 32 [2024-11-08 18:55:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946022331] [2024-11-08 18:55:21,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:21,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 18:55:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 18:55:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:55:21,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:21,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1621 flow. Second operand has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 34 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:21,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:21,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:21,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:26,685 INFO L124 PetriNetUnfolderBase]: 3386/6320 cut-off events. [2024-11-08 18:55:26,685 INFO L125 PetriNetUnfolderBase]: For 53698/53698 co-relation queries the response was YES. [2024-11-08 18:55:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24270 conditions, 6320 events. 3386/6320 cut-off events. For 53698/53698 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 39074 event pairs, 821 based on Foata normal form. 82/6394 useless extension candidates. Maximal degree in co-relation 22856. Up to 2550 conditions per place. [2024-11-08 18:55:26,743 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 276 selfloop transitions, 109 changer transitions 10/402 dead transitions. [2024-11-08 18:55:26,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 402 transitions, 3930 flow [2024-11-08 18:55:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 18:55:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-08 18:55:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 541 transitions. [2024-11-08 18:55:26,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28624338624338624 [2024-11-08 18:55:26,748 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1621 flow. Second operand 42 states and 541 transitions. [2024-11-08 18:55:26,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 402 transitions, 3930 flow [2024-11-08 18:55:26,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 402 transitions, 3394 flow, removed 233 selfloop flow, removed 10 redundant places. [2024-11-08 18:55:26,916 INFO L231 Difference]: Finished difference. Result has 166 places, 216 transitions, 2390 flow [2024-11-08 18:55:26,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2390, PETRI_PLACES=166, PETRI_TRANSITIONS=216} [2024-11-08 18:55:26,917 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-11-08 18:55:26,918 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 216 transitions, 2390 flow [2024-11-08 18:55:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 34 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:26,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:26,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:26,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 18:55:27,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:55:27,119 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:27,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1259271583, now seen corresponding path program 1 times [2024-11-08 18:55:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696984335] [2024-11-08 18:55:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696984335] [2024-11-08 18:55:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696984335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298529073] [2024-11-08 18:55:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:27,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:27,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:27,976 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:27,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:55:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:28,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:55:28,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:28,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:28,678 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 18:55:28,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 18:55:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298529073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:29,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-08 18:55:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905356331] [2024-11-08 18:55:29,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:29,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:55:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:55:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:55:29,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:29,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 216 transitions, 2390 flow. Second operand has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:29,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:29,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:29,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:34,081 INFO L124 PetriNetUnfolderBase]: 4711/8863 cut-off events. [2024-11-08 18:55:34,081 INFO L125 PetriNetUnfolderBase]: For 92367/92367 co-relation queries the response was YES. [2024-11-08 18:55:34,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33382 conditions, 8863 events. 4711/8863 cut-off events. For 92367/92367 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 57568 event pairs, 981 based on Foata normal form. 384/9227 useless extension candidates. Maximal degree in co-relation 33279. Up to 1653 conditions per place. [2024-11-08 18:55:34,141 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 244 selfloop transitions, 252 changer transitions 18/521 dead transitions. [2024-11-08 18:55:34,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 521 transitions, 5850 flow [2024-11-08 18:55:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:55:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-08 18:55:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 549 transitions. [2024-11-08 18:55:34,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3128205128205128 [2024-11-08 18:55:34,144 INFO L175 Difference]: Start difference. First operand has 166 places, 216 transitions, 2390 flow. Second operand 39 states and 549 transitions. [2024-11-08 18:55:34,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 521 transitions, 5850 flow [2024-11-08 18:55:34,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 521 transitions, 5690 flow, removed 54 selfloop flow, removed 16 redundant places. [2024-11-08 18:55:34,670 INFO L231 Difference]: Finished difference. Result has 202 places, 346 transitions, 4732 flow [2024-11-08 18:55:34,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4732, PETRI_PLACES=202, PETRI_TRANSITIONS=346} [2024-11-08 18:55:34,671 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-11-08 18:55:34,671 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 346 transitions, 4732 flow [2024-11-08 18:55:34,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:34,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:34,672 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:34,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 18:55:34,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:55:34,876 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:34,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1009787923, now seen corresponding path program 2 times [2024-11-08 18:55:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306576802] [2024-11-08 18:55:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:34,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306576802] [2024-11-08 18:55:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306576802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058620635] [2024-11-08 18:55:35,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:55:35,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:35,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:35,482 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:35,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:55:35,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:55:35,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:35,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 18:55:35,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:35,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:55:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:36,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:37,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-08 18:55:37,318 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 18:55:37,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-08 18:55:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:37,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058620635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:37,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:37,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 33 [2024-11-08 18:55:37,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027846738] [2024-11-08 18:55:37,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:37,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:55:37,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:55:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:55:37,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:37,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 346 transitions, 4732 flow. Second operand has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:37,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:37,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:37,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:40,850 INFO L124 PetriNetUnfolderBase]: 1651/3281 cut-off events. [2024-11-08 18:55:40,850 INFO L125 PetriNetUnfolderBase]: For 39166/39166 co-relation queries the response was YES. [2024-11-08 18:55:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11643 conditions, 3281 events. 1651/3281 cut-off events. For 39166/39166 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19674 event pairs, 731 based on Foata normal form. 294/3571 useless extension candidates. Maximal degree in co-relation 11580. Up to 1354 conditions per place. [2024-11-08 18:55:40,872 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 105 selfloop transitions, 34 changer transitions 71/217 dead transitions. [2024-11-08 18:55:40,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 217 transitions, 1949 flow [2024-11-08 18:55:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 18:55:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-08 18:55:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 344 transitions. [2024-11-08 18:55:40,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.294017094017094 [2024-11-08 18:55:40,875 INFO L175 Difference]: Start difference. First operand has 202 places, 346 transitions, 4732 flow. Second operand 26 states and 344 transitions. [2024-11-08 18:55:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 217 transitions, 1949 flow [2024-11-08 18:55:40,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 1626 flow, removed 86 selfloop flow, removed 47 redundant places. [2024-11-08 18:55:40,996 INFO L231 Difference]: Finished difference. Result has 166 places, 96 transitions, 866 flow [2024-11-08 18:55:40,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=866, PETRI_PLACES=166, PETRI_TRANSITIONS=96} [2024-11-08 18:55:40,997 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-11-08 18:55:40,997 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 96 transitions, 866 flow [2024-11-08 18:55:40,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.142857142857142) internal successors, (320), 35 states have internal predecessors, (320), 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 18:55:40,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:40,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:41,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 18:55:41,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:41,202 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:41,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1009787924, now seen corresponding path program 3 times [2024-11-08 18:55:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:41,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364106886] [2024-11-08 18:55:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364106886] [2024-11-08 18:55:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364106886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837220920] [2024-11-08 18:55:42,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:55:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:42,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:55:42,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:55:42,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:42,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 18:55:42,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:42,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:55:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:43,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:44,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2024-11-08 18:55:44,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:55:44,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 103 [2024-11-08 18:55:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:45,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837220920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:45,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:45,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2024-11-08 18:55:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574944392] [2024-11-08 18:55:45,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:45,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 18:55:45,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 18:55:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 18:55:45,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:45,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 96 transitions, 866 flow. Second operand has 38 states, 38 states have (on average 8.973684210526315) internal successors, (341), 38 states have internal predecessors, (341), 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 18:55:45,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:45,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:45,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:48,930 INFO L124 PetriNetUnfolderBase]: 1235/2343 cut-off events. [2024-11-08 18:55:48,930 INFO L125 PetriNetUnfolderBase]: For 10644/10644 co-relation queries the response was YES. [2024-11-08 18:55:48,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 2343 events. 1235/2343 cut-off events. For 10644/10644 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12568 event pairs, 457 based on Foata normal form. 44/2383 useless extension candidates. Maximal degree in co-relation 7970. Up to 1168 conditions per place. [2024-11-08 18:55:48,939 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 69 selfloop transitions, 29 changer transitions 54/159 dead transitions. [2024-11-08 18:55:48,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 159 transitions, 1243 flow [2024-11-08 18:55:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:55:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 18:55:48,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 295 transitions. [2024-11-08 18:55:48,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27314814814814814 [2024-11-08 18:55:48,941 INFO L175 Difference]: Start difference. First operand has 166 places, 96 transitions, 866 flow. Second operand 24 states and 295 transitions. [2024-11-08 18:55:48,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 159 transitions, 1243 flow [2024-11-08 18:55:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 1198 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-11-08 18:55:48,961 INFO L231 Difference]: Finished difference. Result has 135 places, 76 transitions, 747 flow [2024-11-08 18:55:48,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=747, PETRI_PLACES=135, PETRI_TRANSITIONS=76} [2024-11-08 18:55:48,962 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-11-08 18:55:48,962 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 76 transitions, 747 flow [2024-11-08 18:55:48,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.973684210526315) internal successors, (341), 38 states have internal predecessors, (341), 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 18:55:48,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:48,963 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:48,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 18:55:49,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:49,167 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:49,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1122426428, now seen corresponding path program 3 times [2024-11-08 18:55:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130590658] [2024-11-08 18:55:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:49,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130590658] [2024-11-08 18:55:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130590658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414235714] [2024-11-08 18:55:50,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:55:50,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:50,233 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:55:50,371 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:55:50,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:50,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:55:50,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:55:50,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:50,629 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 18:55:50,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 18:55:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:55:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414235714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:50,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:50,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 21 [2024-11-08 18:55:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847940651] [2024-11-08 18:55:50,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:50,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:55:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:55:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:55:50,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:50,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 76 transitions, 747 flow. Second operand has 23 states, 23 states have (on average 10.130434782608695) internal successors, (233), 23 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:50,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:50,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:50,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:52,322 INFO L124 PetriNetUnfolderBase]: 1174/2241 cut-off events. [2024-11-08 18:55:52,322 INFO L125 PetriNetUnfolderBase]: For 14191/14191 co-relation queries the response was YES. [2024-11-08 18:55:52,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8200 conditions, 2241 events. 1174/2241 cut-off events. For 14191/14191 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11915 event pairs, 248 based on Foata normal form. 60/2297 useless extension candidates. Maximal degree in co-relation 8161. Up to 761 conditions per place. [2024-11-08 18:55:52,332 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 122 selfloop transitions, 36 changer transitions 12/177 dead transitions. [2024-11-08 18:55:52,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 177 transitions, 1521 flow [2024-11-08 18:55:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:55:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 18:55:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 323 transitions. [2024-11-08 18:55:52,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29907407407407405 [2024-11-08 18:55:52,334 INFO L175 Difference]: Start difference. First operand has 135 places, 76 transitions, 747 flow. Second operand 24 states and 323 transitions. [2024-11-08 18:55:52,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 177 transitions, 1521 flow [2024-11-08 18:55:52,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 177 transitions, 1449 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-11-08 18:55:52,358 INFO L231 Difference]: Finished difference. Result has 127 places, 83 transitions, 883 flow [2024-11-08 18:55:52,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=883, PETRI_PLACES=127, PETRI_TRANSITIONS=83} [2024-11-08 18:55:52,358 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-11-08 18:55:52,359 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 83 transitions, 883 flow [2024-11-08 18:55:52,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.130434782608695) internal successors, (233), 23 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:52,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:52,359 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:52,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:52,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 18:55:52,564 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:52,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1356583688, now seen corresponding path program 4 times [2024-11-08 18:55:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:52,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748774658] [2024-11-08 18:55:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:52,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:55:53,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:53,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748774658] [2024-11-08 18:55:53,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748774658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:53,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288413993] [2024-11-08 18:55:53,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:55:53,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:53,676 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:53,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:55:53,764 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:55:53,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:53,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:55:53,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:55:54,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:54,085 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-08 18:55:54,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 18:55:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:55:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288413993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:54,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 4] total 24 [2024-11-08 18:55:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037448191] [2024-11-08 18:55:54,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:54,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 18:55:54,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:54,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 18:55:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2024-11-08 18:55:54,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:55:54,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 83 transitions, 883 flow. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 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 18:55:54,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:54,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:55:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:55,952 INFO L124 PetriNetUnfolderBase]: 1554/2955 cut-off events. [2024-11-08 18:55:55,952 INFO L125 PetriNetUnfolderBase]: For 21699/21699 co-relation queries the response was YES. [2024-11-08 18:55:55,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11577 conditions, 2955 events. 1554/2955 cut-off events. For 21699/21699 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 16333 event pairs, 273 based on Foata normal form. 60/3015 useless extension candidates. Maximal degree in co-relation 11536. Up to 603 conditions per place. [2024-11-08 18:55:55,967 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 135 selfloop transitions, 42 changer transitions 6/190 dead transitions. [2024-11-08 18:55:55,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 190 transitions, 1845 flow [2024-11-08 18:55:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:55:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 18:55:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 313 transitions. [2024-11-08 18:55:55,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30241545893719807 [2024-11-08 18:55:55,969 INFO L175 Difference]: Start difference. First operand has 127 places, 83 transitions, 883 flow. Second operand 23 states and 313 transitions. [2024-11-08 18:55:55,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 190 transitions, 1845 flow [2024-11-08 18:55:55,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 190 transitions, 1690 flow, removed 30 selfloop flow, removed 19 redundant places. [2024-11-08 18:55:56,000 INFO L231 Difference]: Finished difference. Result has 134 places, 89 transitions, 968 flow [2024-11-08 18:55:56,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=968, PETRI_PLACES=134, PETRI_TRANSITIONS=89} [2024-11-08 18:55:56,000 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-11-08 18:55:56,001 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 89 transitions, 968 flow [2024-11-08 18:55:56,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 26 states have internal predecessors, (244), 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 18:55:56,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:56,001 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:56,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 18:55:56,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:56,201 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:56,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1657059902, now seen corresponding path program 4 times [2024-11-08 18:55:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:56,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359401485] [2024-11-08 18:55:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:56,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:55:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 18:55:56,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:55:56,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359401485] [2024-11-08 18:55:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359401485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:55:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004092524] [2024-11-08 18:55:56,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:55:56,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:56,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:55:56,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:55:56,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:55:56,404 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:55:56,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:55:56,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:55:56,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:55:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 18:55:56,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:55:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:55:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004092524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:55:56,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:55:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 8 [2024-11-08 18:55:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499297256] [2024-11-08 18:55:56,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:55:56,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:55:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:55:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:55:56,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:55:56,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 18:55:56,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 89 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:56,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:55:56,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 18:55:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:55:57,226 INFO L124 PetriNetUnfolderBase]: 2434/4673 cut-off events. [2024-11-08 18:55:57,226 INFO L125 PetriNetUnfolderBase]: For 41830/41830 co-relation queries the response was YES. [2024-11-08 18:55:57,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18984 conditions, 4673 events. 2434/4673 cut-off events. For 41830/41830 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 28470 event pairs, 571 based on Foata normal form. 60/4733 useless extension candidates. Maximal degree in co-relation 18942. Up to 1839 conditions per place. [2024-11-08 18:55:57,256 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 84 selfloop transitions, 44 changer transitions 2/144 dead transitions. [2024-11-08 18:55:57,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 144 transitions, 1837 flow [2024-11-08 18:55:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:55:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:55:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-08 18:55:57,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-11-08 18:55:57,257 INFO L175 Difference]: Start difference. First operand has 134 places, 89 transitions, 968 flow. Second operand 5 states and 116 transitions. [2024-11-08 18:55:57,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 144 transitions, 1837 flow [2024-11-08 18:55:57,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 144 transitions, 1693 flow, removed 38 selfloop flow, removed 16 redundant places. [2024-11-08 18:55:57,302 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 1375 flow [2024-11-08 18:55:57,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1375, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-11-08 18:55:57,302 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-11-08 18:55:57,302 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 1375 flow [2024-11-08 18:55:57,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:55:57,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:55:57,303 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:55:57,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 18:55:57,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:55:57,503 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:55:57,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:55:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1722372968, now seen corresponding path program 5 times [2024-11-08 18:55:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:55:57,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528914483] [2024-11-08 18:55:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:55:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:55:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528914483] [2024-11-08 18:56:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528914483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67932085] [2024-11-08 18:56:00,025 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:56:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:00,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:00,027 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:00,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:56:00,128 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-08 18:56:00,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:00,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:56:00,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:56:00,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:00,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:56:00,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-08 18:56:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:56:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67932085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:00,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 4] total 29 [2024-11-08 18:56:00,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192909335] [2024-11-08 18:56:00,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:00,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 18:56:00,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 18:56:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:56:01,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:56:01,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 1375 flow. Second operand has 31 states, 31 states have (on average 9.709677419354838) internal successors, (301), 31 states have internal predecessors, (301), 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 18:56:01,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:01,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:56:01,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:03,568 INFO L124 PetriNetUnfolderBase]: 3178/6047 cut-off events. [2024-11-08 18:56:03,568 INFO L125 PetriNetUnfolderBase]: For 52307/52307 co-relation queries the response was YES. [2024-11-08 18:56:03,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24606 conditions, 6047 events. 3178/6047 cut-off events. For 52307/52307 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 38079 event pairs, 519 based on Foata normal form. 80/6127 useless extension candidates. Maximal degree in co-relation 24562. Up to 2707 conditions per place. [2024-11-08 18:56:03,600 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 183 selfloop transitions, 56 changer transitions 16/262 dead transitions. [2024-11-08 18:56:03,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 262 transitions, 2772 flow [2024-11-08 18:56:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 18:56:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 18:56:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 394 transitions. [2024-11-08 18:56:03,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30191570881226054 [2024-11-08 18:56:03,602 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 1375 flow. Second operand 29 states and 394 transitions. [2024-11-08 18:56:03,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 262 transitions, 2772 flow [2024-11-08 18:56:03,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 262 transitions, 2752 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-08 18:56:03,665 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 1934 flow [2024-11-08 18:56:03,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1934, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-11-08 18:56:03,665 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-11-08 18:56:03,665 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 1934 flow [2024-11-08 18:56:03,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.709677419354838) internal successors, (301), 31 states have internal predecessors, (301), 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 18:56:03,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:03,666 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:03,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:03,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 18:56:03,867 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:56:03,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -91175774, now seen corresponding path program 6 times [2024-11-08 18:56:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:03,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773588517] [2024-11-08 18:56:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:03,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:06,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773588517] [2024-11-08 18:56:06,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773588517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:06,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421345518] [2024-11-08 18:56:06,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:56:06,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:06,933 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:06,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:56:07,045 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 18:56:07,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:07,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:56:07,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:56:07,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:07,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:56:07,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-08 18:56:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 18:56:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421345518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:07,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:07,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 4] total 30 [2024-11-08 18:56:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593707629] [2024-11-08 18:56:07,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:07,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 18:56:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 18:56:07,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2024-11-08 18:56:08,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:56:08,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 1934 flow. Second operand has 32 states, 32 states have (on average 9.625) internal successors, (308), 32 states have internal predecessors, (308), 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 18:56:08,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:08,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:56:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:10,556 INFO L124 PetriNetUnfolderBase]: 3433/6478 cut-off events. [2024-11-08 18:56:10,557 INFO L125 PetriNetUnfolderBase]: For 63385/63385 co-relation queries the response was YES. [2024-11-08 18:56:10,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26859 conditions, 6478 events. 3433/6478 cut-off events. For 63385/63385 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 41104 event pairs, 758 based on Foata normal form. 110/6588 useless extension candidates. Maximal degree in co-relation 26808. Up to 2451 conditions per place. [2024-11-08 18:56:10,597 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 158 selfloop transitions, 58 changer transitions 10/233 dead transitions. [2024-11-08 18:56:10,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 233 transitions, 2878 flow [2024-11-08 18:56:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:56:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-08 18:56:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 312 transitions. [2024-11-08 18:56:10,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28888888888888886 [2024-11-08 18:56:10,599 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 1934 flow. Second operand 24 states and 312 transitions. [2024-11-08 18:56:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 233 transitions, 2878 flow [2024-11-08 18:56:10,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 233 transitions, 2757 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-11-08 18:56:10,697 INFO L231 Difference]: Finished difference. Result has 175 places, 141 transitions, 2036 flow [2024-11-08 18:56:10,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2036, PETRI_PLACES=175, PETRI_TRANSITIONS=141} [2024-11-08 18:56:10,698 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-11-08 18:56:10,698 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 141 transitions, 2036 flow [2024-11-08 18:56:10,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.625) internal successors, (308), 32 states have internal predecessors, (308), 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 18:56:10,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:10,698 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:10,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 18:56:10,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:10,899 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:56:10,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash 54207884, now seen corresponding path program 7 times [2024-11-08 18:56:10,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:10,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561573711] [2024-11-08 18:56:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561573711] [2024-11-08 18:56:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561573711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:11,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839297259] [2024-11-08 18:56:11,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:56:11,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:11,705 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:11,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:56:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:11,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 18:56:11,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:12,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:56:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:12,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:13,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 87 [2024-11-08 18:56:13,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:56:13,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 294 treesize of output 257 [2024-11-08 18:56:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839297259] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:15,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:15,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2024-11-08 18:56:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327327010] [2024-11-08 18:56:15,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:15,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:56:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:56:15,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1924, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:56:16,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:56:16,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 141 transitions, 2036 flow. Second operand has 47 states, 47 states have (on average 9.170212765957446) internal successors, (431), 47 states have internal predecessors, (431), 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 18:56:16,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:16,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:56:16,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:25,687 INFO L124 PetriNetUnfolderBase]: 10305/19342 cut-off events. [2024-11-08 18:56:25,687 INFO L125 PetriNetUnfolderBase]: For 311093/311093 co-relation queries the response was YES. [2024-11-08 18:56:25,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85231 conditions, 19342 events. 10305/19342 cut-off events. For 311093/311093 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 150514 event pairs, 2136 based on Foata normal form. 1134/20474 useless extension candidates. Maximal degree in co-relation 85176. Up to 3833 conditions per place. [2024-11-08 18:56:25,939 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 481 selfloop transitions, 368 changer transitions 37/893 dead transitions. [2024-11-08 18:56:25,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 893 transitions, 11322 flow [2024-11-08 18:56:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-08 18:56:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2024-11-08 18:56:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 1244 transitions. [2024-11-08 18:56:25,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33306559571619815 [2024-11-08 18:56:25,943 INFO L175 Difference]: Start difference. First operand has 175 places, 141 transitions, 2036 flow. Second operand 83 states and 1244 transitions. [2024-11-08 18:56:25,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 893 transitions, 11322 flow [2024-11-08 18:56:26,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 893 transitions, 11039 flow, removed 66 selfloop flow, removed 20 redundant places. [2024-11-08 18:56:26,301 INFO L231 Difference]: Finished difference. Result has 291 places, 488 transitions, 9075 flow [2024-11-08 18:56:26,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=9075, PETRI_PLACES=291, PETRI_TRANSITIONS=488} [2024-11-08 18:56:26,302 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-11-08 18:56:26,302 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 488 transitions, 9075 flow [2024-11-08 18:56:26,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 9.170212765957446) internal successors, (431), 47 states have internal predecessors, (431), 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 18:56:26,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:26,302 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:26,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 18:56:26,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:26,503 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:56:26,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1994383233, now seen corresponding path program 5 times [2024-11-08 18:56:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:26,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386517794] [2024-11-08 18:56:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386517794] [2024-11-08 18:56:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386517794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287672817] [2024-11-08 18:56:27,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:56:27,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:27,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:27,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:27,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 18:56:27,695 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 18:56:27,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:27,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 18:56:27,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:28,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:29,382 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2024-11-08 18:56:29,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 76 [2024-11-08 18:56:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287672817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:30,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 44 [2024-11-08 18:56:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106321097] [2024-11-08 18:56:30,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:30,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-08 18:56:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-08 18:56:30,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 18:56:30,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:56:30,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 488 transitions, 9075 flow. Second operand has 46 states, 46 states have (on average 9.217391304347826) internal successors, (424), 46 states have internal predecessors, (424), 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 18:56:30,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:56:30,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:56:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:56:46,048 INFO L124 PetriNetUnfolderBase]: 13576/25519 cut-off events. [2024-11-08 18:56:46,048 INFO L125 PetriNetUnfolderBase]: For 1554425/1554425 co-relation queries the response was YES. [2024-11-08 18:56:46,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156537 conditions, 25519 events. 13576/25519 cut-off events. For 1554425/1554425 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 202437 event pairs, 2476 based on Foata normal form. 708/26207 useless extension candidates. Maximal degree in co-relation 156429. Up to 8231 conditions per place. [2024-11-08 18:56:46,412 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 755 selfloop transitions, 420 changer transitions 47/1229 dead transitions. [2024-11-08 18:56:46,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1229 transitions, 22129 flow [2024-11-08 18:56:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-08 18:56:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-08 18:56:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1259 transitions. [2024-11-08 18:56:46,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32532299741602067 [2024-11-08 18:56:46,416 INFO L175 Difference]: Start difference. First operand has 291 places, 488 transitions, 9075 flow. Second operand 86 states and 1259 transitions. [2024-11-08 18:56:46,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1229 transitions, 22129 flow [2024-11-08 18:56:56,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1229 transitions, 19000 flow, removed 1527 selfloop flow, removed 30 redundant places. [2024-11-08 18:56:56,491 INFO L231 Difference]: Finished difference. Result has 379 places, 729 transitions, 16103 flow [2024-11-08 18:56:56,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6182, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=16103, PETRI_PLACES=379, PETRI_TRANSITIONS=729} [2024-11-08 18:56:56,492 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-11-08 18:56:56,492 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 729 transitions, 16103 flow [2024-11-08 18:56:56,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 9.217391304347826) internal successors, (424), 46 states have internal predecessors, (424), 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 18:56:56,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:56:56,493 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:56,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 18:56:56,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:56,693 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:56:56,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash 272292885, now seen corresponding path program 6 times [2024-11-08 18:56:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319588419] [2024-11-08 18:56:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:57,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319588419] [2024-11-08 18:56:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319588419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:57,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676219309] [2024-11-08 18:56:57,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:56:57,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:57,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:57,830 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:57,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 18:56:58,021 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 18:56:58,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:56:58,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 18:56:58,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:58,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 18:56:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:58,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:00,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 70 [2024-11-08 18:57:00,426 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-08 18:57:00,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 140 [2024-11-08 18:57:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676219309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 47 [2024-11-08 18:57:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566173036] [2024-11-08 18:57:02,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:02,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 18:57:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:02,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 18:57:02,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2087, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:57:02,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:57:02,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 729 transitions, 16103 flow. Second operand has 49 states, 49 states have (on average 9.081632653061224) internal successors, (445), 49 states have internal predecessors, (445), 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 18:57:02,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:57:02,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:57:02,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:57:19,050 INFO L124 PetriNetUnfolderBase]: 14091/26676 cut-off events. [2024-11-08 18:57:19,050 INFO L125 PetriNetUnfolderBase]: For 1352454/1352454 co-relation queries the response was YES. [2024-11-08 18:57:19,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154801 conditions, 26676 events. 14091/26676 cut-off events. For 1352454/1352454 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 211090 event pairs, 3726 based on Foata normal form. 632/27308 useless extension candidates. Maximal degree in co-relation 154664. Up to 5514 conditions per place. [2024-11-08 18:57:19,644 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 408 selfloop transitions, 631 changer transitions 46/1092 dead transitions. [2024-11-08 18:57:19,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1092 transitions, 24138 flow [2024-11-08 18:57:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 18:57:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-08 18:57:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 690 transitions. [2024-11-08 18:57:19,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3129251700680272 [2024-11-08 18:57:19,650 INFO L175 Difference]: Start difference. First operand has 379 places, 729 transitions, 16103 flow. Second operand 49 states and 690 transitions. [2024-11-08 18:57:19,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 1092 transitions, 24138 flow [2024-11-08 18:57:42,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1092 transitions, 18069 flow, removed 2927 selfloop flow, removed 31 redundant places. [2024-11-08 18:57:42,542 INFO L231 Difference]: Finished difference. Result has 402 places, 856 transitions, 16916 flow [2024-11-08 18:57:42,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10763, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=16916, PETRI_PLACES=402, PETRI_TRANSITIONS=856} [2024-11-08 18:57:42,543 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-11-08 18:57:42,543 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 856 transitions, 16916 flow [2024-11-08 18:57:42,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.081632653061224) internal successors, (445), 49 states have internal predecessors, (445), 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 18:57:42,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:57:42,544 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:42,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:42,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 18:57:42,745 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 18:57:42,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:42,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2058406469, now seen corresponding path program 7 times [2024-11-08 18:57:42,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364834636] [2024-11-08 18:57:42,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:42,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:43,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364834636] [2024-11-08 18:57:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364834636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687837224] [2024-11-08 18:57:43,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:57:43,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:43,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:43,754 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:43,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086d174f-d819-488d-96aa-d842f331eec6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 18:57:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:43,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 18:57:43,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:44,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 18:57:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:45,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:45,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2024-11-08 18:57:45,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:57:45,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 286 treesize of output 249 [2024-11-08 18:57:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:48,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687837224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:48,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:48,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2024-11-08 18:57:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781109544] [2024-11-08 18:57:48,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:48,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:57:48,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:57:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1930, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:57:48,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2024-11-08 18:57:48,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 856 transitions, 16916 flow. Second operand has 47 states, 47 states have (on average 9.170212765957446) internal successors, (431), 47 states have internal predecessors, (431), 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 18:57:48,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:57:48,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2024-11-08 18:57:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand