./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd --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 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:23:40,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:23:41,103 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 15:23:41,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:23:41,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:23:41,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:23:41,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:23:41,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:23:41,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:23:41,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:23:41,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:23:41,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:23:41,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:23:41,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:23:41,163 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:23:41,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:23:41,163 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:23:41,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:23:41,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:23:41,164 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:23:41,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:23:41,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:23:41,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:23:41,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:23:41,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:23:41,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:23:41,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:23:41,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:23:41,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:23:41,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:23:41,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:23:41,168 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd 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 -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-11-13 15:23:41,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:23:41,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:23:41,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:23:41,618 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:23:41,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:23:41,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c Unable to find full path for "g++" [2024-11-13 15:23:44,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:23:44,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:23:44,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-11-13 15:23:44,567 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/data/37a1c4505/f98137015cc44a08bce51cdeb547b350/FLAG8b7d1720a [2024-11-13 15:23:44,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/data/37a1c4505/f98137015cc44a08bce51cdeb547b350 [2024-11-13 15:23:44,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:23:44,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:23:44,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:23:44,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:23:44,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:23:44,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:23:44" (1/1) ... [2024-11-13 15:23:44,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb2fb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:44, skipping insertion in model container [2024-11-13 15:23:44,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:23:44" (1/1) ... [2024-11-13 15:23:44,639 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:23:44,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:23:44,930 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:23:44,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:23:45,015 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:23:45,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45 WrapperNode [2024-11-13 15:23:45,016 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:23:45,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:23:45,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:23:45,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:23:45,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,088 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 231 [2024-11-13 15:23:45,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:23:45,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:23:45,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:23:45,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:23:45,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,154 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-13 15:23:45,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:23:45,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:23:45,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:23:45,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:23:45,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (1/1) ... [2024-11-13 15:23:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:23:45,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:45,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:23:45,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:23:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:23:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:23:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:23:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:23:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:23:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:23:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:23:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:23:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:23:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:23:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:23:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:23:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:23:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:23:45,303 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:23:45,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:23:45,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:23:46,243 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:23:46,244 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:23:46,726 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:23:46,727 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:23:46,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:23:46 BoogieIcfgContainer [2024-11-13 15:23:46,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:23:46,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:23:46,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:23:46,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:23:46,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:23:44" (1/3) ... [2024-11-13 15:23:46,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae47ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:23:46, skipping insertion in model container [2024-11-13 15:23:46,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:23:45" (2/3) ... [2024-11-13 15:23:46,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae47ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:23:46, skipping insertion in model container [2024-11-13 15:23:46,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:23:46" (3/3) ... [2024-11-13 15:23:46,740 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-11-13 15:23:46,761 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:23:46,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-symm.wvr.c that has 3 procedures, 77 locations, 1 initial locations, 4 loop locations, and 24 error locations. [2024-11-13 15:23:46,763 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:23:46,886 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:23:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-13 15:23:47,017 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-13 15:23:47,020 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:23:47,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-13 15:23:47,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-13 15:23:47,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-11-13 15:23:47,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:23:47,063 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;@34e2ec59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:23:47,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-13 15:23:47,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:23:47,075 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 15:23:47,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:23:47,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:47,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 15:23:47,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:47,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 724032, now seen corresponding path program 1 times [2024-11-13 15:23:47,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:47,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960787035] [2024-11-13 15:23:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:47,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960787035] [2024-11-13 15:23:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960787035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:47,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:47,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:23:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770646252] [2024-11-13 15:23:47,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:47,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:47,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:47,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:47,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:23:47,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-11-13 15:23:47,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:47,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:23:47,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:48,161 INFO L124 PetriNetUnfolderBase]: 512/1305 cut-off events. [2024-11-13 15:23:48,161 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-13 15:23:48,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1305 events. 512/1305 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8980 event pairs, 322 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 2032. Up to 772 conditions per place. [2024-11-13 15:23:48,188 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-13 15:23:48,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-11-13 15:23:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:23:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-13 15:23:48,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-13 15:23:48,215 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-11-13 15:23:48,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-11-13 15:23:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:23:48,235 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-11-13 15:23:48,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-11-13 15:23:48,247 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-11-13 15:23:48,247 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-11-13 15:23:48,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-11-13 15:23:48,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:48,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-13 15:23:48,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:23:48,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:48,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 22445751, now seen corresponding path program 1 times [2024-11-13 15:23:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327482050] [2024-11-13 15:23:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327482050] [2024-11-13 15:23:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327482050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:48,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:23:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342144040] [2024-11-13 15:23:48,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:48,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:48,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:23:48,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-11-13 15:23:48,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:48,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:23:48,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:48,897 INFO L124 PetriNetUnfolderBase]: 514/1313 cut-off events. [2024-11-13 15:23:48,897 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 15:23:48,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 1313 events. 514/1313 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9042 event pairs, 322 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 2085. Up to 781 conditions per place. [2024-11-13 15:23:48,911 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-11-13 15:23:48,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-11-13 15:23:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:23:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-13 15:23:48,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-13 15:23:48,916 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-11-13 15:23:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-11-13 15:23:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:23:48,924 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-11-13 15:23:48,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-11-13 15:23:48,927 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-11-13 15:23:48,927 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-11-13 15:23:48,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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) [2024-11-13 15:23:48,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:48,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 15:23:48,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:23:48,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:48,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:48,929 INFO L85 PathProgramCache]: Analyzing trace with hash 95458100, now seen corresponding path program 1 times [2024-11-13 15:23:48,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:48,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945838329] [2024-11-13 15:23:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:48,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945838329] [2024-11-13 15:23:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945838329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:23:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384429123] [2024-11-13 15:23:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:49,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:23:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:23:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:23:49,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:23:49,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-13 15:23:49,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:49,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:23:49,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:50,179 INFO L124 PetriNetUnfolderBase]: 1224/3016 cut-off events. [2024-11-13 15:23:50,180 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 15:23:50,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 3016 events. 1224/3016 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24517 event pairs, 768 based on Foata normal form. 24/2292 useless extension candidates. Maximal degree in co-relation 2500. Up to 943 conditions per place. [2024-11-13 15:23:50,210 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-11-13 15:23:50,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-11-13 15:23:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:23:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:23:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-11-13 15:23:50,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-11-13 15:23:50,217 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-11-13 15:23:50,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-11-13 15:23:50,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:23:50,224 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-11-13 15:23:50,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-11-13 15:23:50,226 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-11-13 15:23:50,226 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-11-13 15:23:50,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2024-11-13 15:23:50,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:50,227 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 15:23:50,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:23:50,228 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:50,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1332772232, now seen corresponding path program 1 times [2024-11-13 15:23:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:50,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321475206] [2024-11-13 15:23:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321475206] [2024-11-13 15:23:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321475206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:23:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993006173] [2024-11-13 15:23:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:50,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:50,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:23:50,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:23:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:50,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:23:50,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:23:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:50,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:23:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:50,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993006173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:23:50,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:23:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 15:23:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501838266] [2024-11-13 15:23:50,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:23:50,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:23:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:23:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:23:50,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:23:50,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-13 15:23:50,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:50,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:23:50,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:51,455 INFO L124 PetriNetUnfolderBase]: 1035/2633 cut-off events. [2024-11-13 15:23:51,455 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-13 15:23:51,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 2633 events. 1035/2633 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21075 event pairs, 646 based on Foata normal form. 0/1996 useless extension candidates. Maximal degree in co-relation 2200. Up to 1554 conditions per place. [2024-11-13 15:23:51,481 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-11-13 15:23:51,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-11-13 15:23:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:23:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:23:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-11-13 15:23:51,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-13 15:23:51,486 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-11-13 15:23:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-11-13 15:23:51,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:23:51,496 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-11-13 15:23:51,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-11-13 15:23:51,499 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-11-13 15:23:51,499 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-11-13 15:23:51,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-13 15:23:51,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:51,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:51,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:23:51,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:51,706 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:51,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1335765413, now seen corresponding path program 1 times [2024-11-13 15:23:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941357123] [2024-11-13 15:23:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941357123] [2024-11-13 15:23:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941357123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:51,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:51,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:23:51,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973750897] [2024-11-13 15:23:51,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:51,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:51,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:51,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:51,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:23:51,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:51,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:51,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:23:51,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:52,907 INFO L124 PetriNetUnfolderBase]: 2294/5669 cut-off events. [2024-11-13 15:23:52,908 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-11-13 15:23:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 5669 events. 2294/5669 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51730 event pairs, 1412 based on Foata normal form. 88/4464 useless extension candidates. Maximal degree in co-relation 9487. Up to 1735 conditions per place. [2024-11-13 15:23:52,952 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 111 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-11-13 15:23:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 829 flow [2024-11-13 15:23:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:23:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-13 15:23:52,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2024-11-13 15:23:52,959 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 251 transitions. [2024-11-13 15:23:52,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 829 flow [2024-11-13 15:23:52,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-13 15:23:52,968 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2024-11-13 15:23:52,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-13 15:23:52,973 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-13 15:23:52,973 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2024-11-13 15:23:52,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:52,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:52,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:52,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:23:52,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:52,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1172249373, now seen corresponding path program 1 times [2024-11-13 15:23:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:52,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789040430] [2024-11-13 15:23:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:53,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789040430] [2024-11-13 15:23:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789040430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:23:53,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989271396] [2024-11-13 15:23:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:53,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:53,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:53,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:23:53,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:23:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:53,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:23:53,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:23:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:23:53,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:23:53,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989271396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:53,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:23:53,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-13 15:23:53,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123990976] [2024-11-13 15:23:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:53,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:23:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:23:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:23:53,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:23:53,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:23:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:54,326 INFO L124 PetriNetUnfolderBase]: 2057/5218 cut-off events. [2024-11-13 15:23:54,327 INFO L125 PetriNetUnfolderBase]: For 495/497 co-relation queries the response was YES. [2024-11-13 15:23:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8555 conditions, 5218 events. 2057/5218 cut-off events. For 495/497 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 47176 event pairs, 1289 based on Foata normal form. 76/4034 useless extension candidates. Maximal degree in co-relation 8470. Up to 3126 conditions per place. [2024-11-13 15:23:54,389 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 61 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2024-11-13 15:23:54,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 484 flow [2024-11-13 15:23:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:23:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:23:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-13 15:23:54,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 15:23:54,392 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 172 transitions. [2024-11-13 15:23:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 484 flow [2024-11-13 15:23:54,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 467 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 15:23:54,404 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2024-11-13 15:23:54,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-13 15:23:54,407 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2024-11-13 15:23:54,407 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2024-11-13 15:23:54,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:54,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:54,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:23:54,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:54,609 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:54,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash -914642630, now seen corresponding path program 1 times [2024-11-13 15:23:54,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:54,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101387656] [2024-11-13 15:23:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:54,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101387656] [2024-11-13 15:23:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101387656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:54,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:54,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:23:54,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606050818] [2024-11-13 15:23:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:54,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:54,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:54,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:54,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:23:54,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-11-13 15:23:54,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:54,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:23:54,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:56,210 INFO L124 PetriNetUnfolderBase]: 4218/9848 cut-off events. [2024-11-13 15:23:56,211 INFO L125 PetriNetUnfolderBase]: For 102/106 co-relation queries the response was YES. [2024-11-13 15:23:56,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16541 conditions, 9848 events. 4218/9848 cut-off events. For 102/106 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 93428 event pairs, 1918 based on Foata normal form. 104/7707 useless extension candidates. Maximal degree in co-relation 16525. Up to 3471 conditions per place. [2024-11-13 15:23:56,283 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 105 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-11-13 15:23:56,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 654 flow [2024-11-13 15:23:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:23:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-13 15:23:56,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-11-13 15:23:56,286 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 262 transitions. [2024-11-13 15:23:56,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 654 flow [2024-11-13 15:23:56,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:23:56,293 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 366 flow [2024-11-13 15:23:56,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2024-11-13 15:23:56,296 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-13 15:23:56,297 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 366 flow [2024-11-13 15:23:56,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-11-13 15:23:56,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:56,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:56,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:23:56,298 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:56,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1942114566, now seen corresponding path program 1 times [2024-11-13 15:23:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:56,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609651283] [2024-11-13 15:23:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:56,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:56,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:56,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609651283] [2024-11-13 15:23:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609651283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:23:56,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966233591] [2024-11-13 15:23:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:56,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:56,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:23:56,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:23:56,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:23:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:56,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:23:56,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:23:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:23:56,767 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:23:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966233591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:56,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:23:56,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-13 15:23:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893395686] [2024-11-13 15:23:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:56,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:56,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:23:56,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:23:56,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:56,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:56,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:23:56,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:23:58,329 INFO L124 PetriNetUnfolderBase]: 3808/9612 cut-off events. [2024-11-13 15:23:58,329 INFO L125 PetriNetUnfolderBase]: For 1160/1192 co-relation queries the response was YES. [2024-11-13 15:23:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16427 conditions, 9612 events. 3808/9612 cut-off events. For 1160/1192 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 95964 event pairs, 2428 based on Foata normal form. 118/7623 useless extension candidates. Maximal degree in co-relation 16409. Up to 5751 conditions per place. [2024-11-13 15:23:58,403 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 58 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-11-13 15:23:58,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 468 flow [2024-11-13 15:23:58,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:23:58,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:23:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-13 15:23:58,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-13 15:23:58,408 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 366 flow. Second operand 4 states and 216 transitions. [2024-11-13 15:23:58,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 468 flow [2024-11-13 15:23:58,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:23:58,416 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 345 flow [2024-11-13 15:23:58,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-13 15:23:58,417 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2024-11-13 15:23:58,417 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 345 flow [2024-11-13 15:23:58,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:58,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:23:58,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:23:58,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:23:58,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:23:58,622 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:23:58,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:23:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1710849314, now seen corresponding path program 1 times [2024-11-13 15:23:58,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:23:58,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386566206] [2024-11-13 15:23:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:23:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:23:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:23:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:23:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:23:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386566206] [2024-11-13 15:23:58,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386566206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:23:58,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:23:58,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:23:58,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297425322] [2024-11-13 15:23:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:23:58,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:23:58,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:23:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:23:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:23:58,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:23:58,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:23:58,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:23:58,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:23:58,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:00,580 INFO L124 PetriNetUnfolderBase]: 6632/14740 cut-off events. [2024-11-13 15:24:00,580 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-11-13 15:24:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25972 conditions, 14740 events. 6632/14740 cut-off events. For 634/666 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 144994 event pairs, 2324 based on Foata normal form. 416/12058 useless extension candidates. Maximal degree in co-relation 25956. Up to 5515 conditions per place. [2024-11-13 15:24:00,698 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-11-13 15:24:00,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 629 flow [2024-11-13 15:24:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:24:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:24:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-13 15:24:00,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-11-13 15:24:00,701 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 345 flow. Second operand 4 states and 242 transitions. [2024-11-13 15:24:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 629 flow [2024-11-13 15:24:00,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:24:00,706 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2024-11-13 15:24:00,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-11-13 15:24:00,707 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-11-13 15:24:00,707 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2024-11-13 15:24:00,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:24:00,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:00,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:00,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:24:00,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:00,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:00,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1496721983, now seen corresponding path program 1 times [2024-11-13 15:24:00,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:00,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941747700] [2024-11-13 15:24:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:00,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941747700] [2024-11-13 15:24:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941747700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:00,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:24:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716060394] [2024-11-13 15:24:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:00,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:24:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:24:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:24:00,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-13 15:24:00,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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) [2024-11-13 15:24:00,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:00,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-13 15:24:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:02,026 INFO L124 PetriNetUnfolderBase]: 2710/7008 cut-off events. [2024-11-13 15:24:02,026 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-11-13 15:24:02,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12859 conditions, 7008 events. 2710/7008 cut-off events. For 1438/1526 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 66045 event pairs, 1668 based on Foata normal form. 56/5727 useless extension candidates. Maximal degree in co-relation 12842. Up to 3531 conditions per place. [2024-11-13 15:24:02,095 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-11-13 15:24:02,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 767 flow [2024-11-13 15:24:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:24:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:24:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-13 15:24:02,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-11-13 15:24:02,099 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 5 states and 313 transitions. [2024-11-13 15:24:02,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 767 flow [2024-11-13 15:24:02,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:24:02,115 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 391 flow [2024-11-13 15:24:02,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-11-13 15:24:02,118 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2024-11-13 15:24:02,119 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 391 flow [2024-11-13 15:24:02,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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) [2024-11-13 15:24:02,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:02,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:02,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:24:02,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:02,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1173373692, now seen corresponding path program 1 times [2024-11-13 15:24:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224642364] [2024-11-13 15:24:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224642364] [2024-11-13 15:24:02,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224642364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:02,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:02,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:24:02,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359739269] [2024-11-13 15:24:02,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:02,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:24:02,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:02,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:24:02,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:24:02,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:24:02,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-13 15:24:02,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:02,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:24:02,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:03,991 INFO L124 PetriNetUnfolderBase]: 5248/12540 cut-off events. [2024-11-13 15:24:03,991 INFO L125 PetriNetUnfolderBase]: For 3539/3851 co-relation queries the response was YES. [2024-11-13 15:24:04,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23651 conditions, 12540 events. 5248/12540 cut-off events. For 3539/3851 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 123061 event pairs, 2066 based on Foata normal form. 266/10647 useless extension candidates. Maximal degree in co-relation 23630. Up to 4515 conditions per place. [2024-11-13 15:24:04,064 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-11-13 15:24:04,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 815 flow [2024-11-13 15:24:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:24:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:24:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-13 15:24:04,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-11-13 15:24:04,066 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 391 flow. Second operand 4 states and 259 transitions. [2024-11-13 15:24:04,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 815 flow [2024-11-13 15:24:04,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:24:04,082 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 408 flow [2024-11-13 15:24:04,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-11-13 15:24:04,083 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-11-13 15:24:04,083 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 408 flow [2024-11-13 15:24:04,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-13 15:24:04,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:04,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:04,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:24:04,084 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:04,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2014844232, now seen corresponding path program 1 times [2024-11-13 15:24:04,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:04,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027617720] [2024-11-13 15:24:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:04,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:04,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027617720] [2024-11-13 15:24:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027617720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:04,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:24:04,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909144407] [2024-11-13 15:24:04,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:04,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:24:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:24:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:24:04,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:24:04,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-13 15:24:04,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:04,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:24:04,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:06,011 INFO L124 PetriNetUnfolderBase]: 8576/18760 cut-off events. [2024-11-13 15:24:06,011 INFO L125 PetriNetUnfolderBase]: For 6704/7080 co-relation queries the response was YES. [2024-11-13 15:24:06,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 18760 events. 8576/18760 cut-off events. For 6704/7080 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 185879 event pairs, 3382 based on Foata normal form. 656/16975 useless extension candidates. Maximal degree in co-relation 38451. Up to 7339 conditions per place. [2024-11-13 15:24:06,131 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 113 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-11-13 15:24:06,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 812 flow [2024-11-13 15:24:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:24:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:24:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-13 15:24:06,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-13 15:24:06,133 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 408 flow. Second operand 4 states and 240 transitions. [2024-11-13 15:24:06,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 812 flow [2024-11-13 15:24:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:24:06,203 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2024-11-13 15:24:06,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-13 15:24:06,203 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-11-13 15:24:06,204 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2024-11-13 15:24:06,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-13 15:24:06,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:06,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:06,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:24:06,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:06,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1964339081, now seen corresponding path program 1 times [2024-11-13 15:24:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477986527] [2024-11-13 15:24:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:06,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477986527] [2024-11-13 15:24:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477986527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:06,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:06,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:24:06,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350768379] [2024-11-13 15:24:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:06,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:24:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:24:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:24:06,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-13 15:24:06,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2024-11-13 15:24:06,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:06,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-13 15:24:06,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:07,611 INFO L124 PetriNetUnfolderBase]: 5550/13978 cut-off events. [2024-11-13 15:24:07,612 INFO L125 PetriNetUnfolderBase]: For 6492/6896 co-relation queries the response was YES. [2024-11-13 15:24:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29601 conditions, 13978 events. 5550/13978 cut-off events. For 6492/6896 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 146319 event pairs, 3746 based on Foata normal form. 216/12613 useless extension candidates. Maximal degree in co-relation 29577. Up to 7943 conditions per place. [2024-11-13 15:24:07,715 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-11-13 15:24:07,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 770 flow [2024-11-13 15:24:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:24:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:24:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-11-13 15:24:07,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-11-13 15:24:07,729 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 294 transitions. [2024-11-13 15:24:07,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 770 flow [2024-11-13 15:24:07,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:24:07,943 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2024-11-13 15:24:07,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-11-13 15:24:07,944 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-13 15:24:07,945 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2024-11-13 15:24:07,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2024-11-13 15:24:07,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:07,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:07,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:24:07,946 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:07,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1414782208, now seen corresponding path program 1 times [2024-11-13 15:24:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:07,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268566533] [2024-11-13 15:24:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:07,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268566533] [2024-11-13 15:24:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268566533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:24:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547958314] [2024-11-13 15:24:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:08,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:24:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:24:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:24:08,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-13 15:24:08,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2024-11-13 15:24:08,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:08,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-13 15:24:08,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:09,246 INFO L124 PetriNetUnfolderBase]: 3144/8019 cut-off events. [2024-11-13 15:24:09,247 INFO L125 PetriNetUnfolderBase]: For 3854/4050 co-relation queries the response was YES. [2024-11-13 15:24:09,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17129 conditions, 8019 events. 3144/8019 cut-off events. For 3854/4050 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 76150 event pairs, 2038 based on Foata normal form. 152/7384 useless extension candidates. Maximal degree in co-relation 17101. Up to 3999 conditions per place. [2024-11-13 15:24:09,314 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-11-13 15:24:09,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 845 flow [2024-11-13 15:24:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:24:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:24:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-11-13 15:24:09,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-11-13 15:24:09,317 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 310 transitions. [2024-11-13 15:24:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 845 flow [2024-11-13 15:24:09,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 832 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-13 15:24:09,352 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2024-11-13 15:24:09,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-11-13 15:24:09,353 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-11-13 15:24:09,353 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2024-11-13 15:24:09,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2024-11-13 15:24:09,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:09,354 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-13 15:24:09,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:24:09,355 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:09,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 700542839, now seen corresponding path program 2 times [2024-11-13 15:24:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652848076] [2024-11-13 15:24:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:09,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652848076] [2024-11-13 15:24:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652848076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117814414] [2024-11-13 15:24:09,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:24:09,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:09,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:09,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:24:09,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:24:09,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:24:09,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:24:09,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:24:09,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:24:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117814414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:09,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-13 15:24:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074897575] [2024-11-13 15:24:09,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:09,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:24:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:24:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:24:09,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:24:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 463 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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) [2024-11-13 15:24:09,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:09,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:24:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:11,454 INFO L124 PetriNetUnfolderBase]: 3149/8118 cut-off events. [2024-11-13 15:24:11,454 INFO L125 PetriNetUnfolderBase]: For 4224/4418 co-relation queries the response was YES. [2024-11-13 15:24:11,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 8118 events. 3149/8118 cut-off events. For 4224/4418 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 77460 event pairs, 2189 based on Foata normal form. 102/7316 useless extension candidates. Maximal degree in co-relation 17284. Up to 4659 conditions per place. [2024-11-13 15:24:11,526 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 44 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-11-13 15:24:11,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 114 transitions, 641 flow [2024-11-13 15:24:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:24:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:24:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1080 transitions. [2024-11-13 15:24:11,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-13 15:24:11,534 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 24 states and 1080 transitions. [2024-11-13 15:24:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 114 transitions, 641 flow [2024-11-13 15:24:11,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:24:11,587 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 551 flow [2024-11-13 15:24:11,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=551, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-11-13 15:24:11,588 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2024-11-13 15:24:11,588 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 551 flow [2024-11-13 15:24:11,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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) [2024-11-13 15:24:11,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:11,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:11,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:24:11,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:24:11,790 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:11,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 529626634, now seen corresponding path program 1 times [2024-11-13 15:24:11,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:11,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985217362] [2024-11-13 15:24:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:11,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:11,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985217362] [2024-11-13 15:24:11,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985217362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:11,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:11,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:24:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162107346] [2024-11-13 15:24:11,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:11,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:24:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:24:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:24:12,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-11-13 15:24:12,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2024-11-13 15:24:12,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:12,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-11-13 15:24:12,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:12,805 INFO L124 PetriNetUnfolderBase]: 2784/7046 cut-off events. [2024-11-13 15:24:12,805 INFO L125 PetriNetUnfolderBase]: For 3650/3844 co-relation queries the response was YES. [2024-11-13 15:24:12,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 7046 events. 2784/7046 cut-off events. For 3650/3844 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65539 event pairs, 1873 based on Foata normal form. 100/6330 useless extension candidates. Maximal degree in co-relation 15131. Up to 4007 conditions per place. [2024-11-13 15:24:12,861 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 7 changer transitions 20/132 dead transitions. [2024-11-13 15:24:12,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 794 flow [2024-11-13 15:24:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:24:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:24:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-11-13 15:24:12,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-11-13 15:24:12,864 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 551 flow. Second operand 5 states and 291 transitions. [2024-11-13 15:24:12,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 794 flow [2024-11-13 15:24:12,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 694 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-11-13 15:24:12,898 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 452 flow [2024-11-13 15:24:12,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-11-13 15:24:12,899 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 54 predicate places. [2024-11-13 15:24:12,899 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 452 flow [2024-11-13 15:24:12,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2024-11-13 15:24:12,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:12,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:12,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:24:12,900 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:12,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1924409607, now seen corresponding path program 1 times [2024-11-13 15:24:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:12,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699402480] [2024-11-13 15:24:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:12,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:13,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699402480] [2024-11-13 15:24:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699402480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810211346] [2024-11-13 15:24:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:13,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:13,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:13,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:13,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:24:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:13,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:24:13,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:13,653 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 [2024-11-13 15:24:13,762 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 15 treesize of output 7 [2024-11-13 15:24:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:13,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:13,906 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 14 treesize of output 12 [2024-11-13 15:24:13,916 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 18 treesize of output 16 [2024-11-13 15:24:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810211346] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:13,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-13 15:24:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104285784] [2024-11-13 15:24:13,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:13,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:24:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:24:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:24:14,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-11-13 15:24:14,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 452 flow. Second operand has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 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) [2024-11-13 15:24:14,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:14,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-11-13 15:24:14,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:15,612 INFO L124 PetriNetUnfolderBase]: 3118/7302 cut-off events. [2024-11-13 15:24:15,613 INFO L125 PetriNetUnfolderBase]: For 4109/4404 co-relation queries the response was YES. [2024-11-13 15:24:15,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16243 conditions, 7302 events. 3118/7302 cut-off events. For 4109/4404 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65718 event pairs, 758 based on Foata normal form. 118/6746 useless extension candidates. Maximal degree in co-relation 16214. Up to 1675 conditions per place. [2024-11-13 15:24:15,687 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 148 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-11-13 15:24:15,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1167 flow [2024-11-13 15:24:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:24:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:24:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-11-13 15:24:15,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-11-13 15:24:15,690 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 452 flow. Second operand 10 states and 558 transitions. [2024-11-13 15:24:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1167 flow [2024-11-13 15:24:15,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 1127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-13 15:24:15,724 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 542 flow [2024-11-13 15:24:15,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-11-13 15:24:15,725 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 55 predicate places. [2024-11-13 15:24:15,725 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 542 flow [2024-11-13 15:24:15,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 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) [2024-11-13 15:24:15,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:15,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:15,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:24:15,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:24:15,926 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:15,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:15,927 INFO L85 PathProgramCache]: Analyzing trace with hash -472875298, now seen corresponding path program 1 times [2024-11-13 15:24:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484216084] [2024-11-13 15:24:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:16,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:16,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:16,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484216084] [2024-11-13 15:24:16,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484216084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:16,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924184290] [2024-11-13 15:24:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:16,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:16,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:16,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:24:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:16,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:24:16,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:16,586 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 [2024-11-13 15:24:16,694 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 17 treesize of output 9 [2024-11-13 15:24:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:16,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:16,847 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 16 treesize of output 14 [2024-11-13 15:24:16,853 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 22 treesize of output 20 [2024-11-13 15:24:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924184290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:16,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:16,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-13 15:24:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612425035] [2024-11-13 15:24:16,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:16,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:24:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:24:16,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:24:16,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-11-13 15:24:16,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 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) [2024-11-13 15:24:16,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:16,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-11-13 15:24:16,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:18,560 INFO L124 PetriNetUnfolderBase]: 3658/8181 cut-off events. [2024-11-13 15:24:18,561 INFO L125 PetriNetUnfolderBase]: For 7001/7290 co-relation queries the response was YES. [2024-11-13 15:24:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19323 conditions, 8181 events. 3658/8181 cut-off events. For 7001/7290 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 72201 event pairs, 1177 based on Foata normal form. 176/7395 useless extension candidates. Maximal degree in co-relation 19294. Up to 2109 conditions per place. [2024-11-13 15:24:18,629 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-11-13 15:24:18,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 1221 flow [2024-11-13 15:24:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:24:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:24:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-11-13 15:24:18,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-11-13 15:24:18,633 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 542 flow. Second operand 10 states and 538 transitions. [2024-11-13 15:24:18,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 1221 flow [2024-11-13 15:24:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 1206 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 15:24:18,679 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 603 flow [2024-11-13 15:24:18,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-11-13 15:24:18,680 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2024-11-13 15:24:18,681 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 603 flow [2024-11-13 15:24:18,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 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) [2024-11-13 15:24:18,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:18,681 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-11-13 15:24:18,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:24:18,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:24:18,886 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:18,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1021310277, now seen corresponding path program 1 times [2024-11-13 15:24:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:18,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078894581] [2024-11-13 15:24:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:19,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078894581] [2024-11-13 15:24:19,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078894581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:19,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288254333] [2024-11-13 15:24:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:19,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:19,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:19,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:19,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:24:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:19,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:24:19,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:19,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288254333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-13 15:24:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407098950] [2024-11-13 15:24:19,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:19,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:24:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:24:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:24:19,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-11-13 15:24:19,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 603 flow. Second operand has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 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) [2024-11-13 15:24:19,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:19,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-11-13 15:24:19,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:21,083 INFO L124 PetriNetUnfolderBase]: 2852/7473 cut-off events. [2024-11-13 15:24:21,083 INFO L125 PetriNetUnfolderBase]: For 8593/8771 co-relation queries the response was YES. [2024-11-13 15:24:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 7473 events. 2852/7473 cut-off events. For 8593/8771 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 72184 event pairs, 1982 based on Foata normal form. 122/6625 useless extension candidates. Maximal degree in co-relation 17795. Up to 4222 conditions per place. [2024-11-13 15:24:21,154 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 52 selfloop transitions, 72 changer transitions 0/163 dead transitions. [2024-11-13 15:24:21,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 163 transitions, 1131 flow [2024-11-13 15:24:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:24:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:24:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1209 transitions. [2024-11-13 15:24:21,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2024-11-13 15:24:21,158 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 603 flow. Second operand 26 states and 1209 transitions. [2024-11-13 15:24:21,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 163 transitions, 1131 flow [2024-11-13 15:24:21,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1072 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-13 15:24:21,198 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1020 flow [2024-11-13 15:24:21,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1020, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-11-13 15:24:21,199 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 88 predicate places. [2024-11-13 15:24:21,199 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1020 flow [2024-11-13 15:24:21,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 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) [2024-11-13 15:24:21,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:21,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:21,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:24:21,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:21,400 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:21,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 655285329, now seen corresponding path program 1 times [2024-11-13 15:24:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:21,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433189787] [2024-11-13 15:24:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:21,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433189787] [2024-11-13 15:24:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433189787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027270248] [2024-11-13 15:24:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:22,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:22,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:22,366 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:22,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:24:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:22,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:24:22,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:22,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:24:22,542 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 [2024-11-13 15:24:22,597 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:24:22,598 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 11 treesize of output 11 [2024-11-13 15:24:22,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 15:24:22,741 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 15 treesize of output 7 [2024-11-13 15:24:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:22,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:23,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:23,047 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 15:24:23,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:23,063 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 33 treesize of output 29 [2024-11-13 15:24:23,071 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 9 treesize of output 7 [2024-11-13 15:24:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027270248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:23,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:23,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-13 15:24:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126237001] [2024-11-13 15:24:23,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:23,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:24:23,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:24:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=348, Unknown=6, NotChecked=0, Total=420 [2024-11-13 15:24:23,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-13 15:24:23,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1020 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 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) [2024-11-13 15:24:23,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:23,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-13 15:24:23,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:27,502 INFO L124 PetriNetUnfolderBase]: 11573/20463 cut-off events. [2024-11-13 15:24:27,503 INFO L125 PetriNetUnfolderBase]: For 24601/25981 co-relation queries the response was YES. [2024-11-13 15:24:27,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54589 conditions, 20463 events. 11573/20463 cut-off events. For 24601/25981 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 167773 event pairs, 2686 based on Foata normal form. 600/19079 useless extension candidates. Maximal degree in co-relation 54552. Up to 3021 conditions per place. [2024-11-13 15:24:27,708 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 465 selfloop transitions, 67 changer transitions 16/574 dead transitions. [2024-11-13 15:24:27,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 574 transitions, 4504 flow [2024-11-13 15:24:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:24:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:24:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2024-11-13 15:24:27,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2024-11-13 15:24:27,711 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1020 flow. Second operand 24 states and 915 transitions. [2024-11-13 15:24:27,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 574 transitions, 4504 flow [2024-11-13 15:24:27,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 574 transitions, 4043 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-11-13 15:24:27,932 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 1257 flow [2024-11-13 15:24:27,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1257, PETRI_PLACES=184, PETRI_TRANSITIONS=197} [2024-11-13 15:24:27,933 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 105 predicate places. [2024-11-13 15:24:27,933 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 1257 flow [2024-11-13 15:24:27,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 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) [2024-11-13 15:24:27,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:27,936 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:27,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:24:28,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:28,137 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:28,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1742727622, now seen corresponding path program 1 times [2024-11-13 15:24:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320243415] [2024-11-13 15:24:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:24:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:28,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320243415] [2024-11-13 15:24:28,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320243415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:28,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037103159] [2024-11-13 15:24:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:28,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:28,251 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:28,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:24:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:28,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:24:28,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:28,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:28,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037103159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:28,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:28,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-13 15:24:28,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451242083] [2024-11-13 15:24:28,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:28,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:24:28,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:24:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:24:29,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:24:29,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 197 transitions, 1257 flow. Second operand has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 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) [2024-11-13 15:24:29,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:29,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:24:29,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:32,117 INFO L124 PetriNetUnfolderBase]: 4853/11764 cut-off events. [2024-11-13 15:24:32,117 INFO L125 PetriNetUnfolderBase]: For 17942/18384 co-relation queries the response was YES. [2024-11-13 15:24:32,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30658 conditions, 11764 events. 4853/11764 cut-off events. For 17942/18384 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 116278 event pairs, 1154 based on Foata normal form. 270/10698 useless extension candidates. Maximal degree in co-relation 30616. Up to 2096 conditions per place. [2024-11-13 15:24:32,239 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 330 selfloop transitions, 65 changer transitions 14/448 dead transitions. [2024-11-13 15:24:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 3434 flow [2024-11-13 15:24:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:24:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:24:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-11-13 15:24:32,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-11-13 15:24:32,242 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 1257 flow. Second operand 17 states and 894 transitions. [2024-11-13 15:24:32,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 3434 flow [2024-11-13 15:24:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 3308 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-11-13 15:24:32,335 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 1590 flow [2024-11-13 15:24:32,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=224} [2024-11-13 15:24:32,335 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 113 predicate places. [2024-11-13 15:24:32,336 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 1590 flow [2024-11-13 15:24:32,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 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) [2024-11-13 15:24:32,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:32,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:32,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:24:32,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:32,537 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:32,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1774232567, now seen corresponding path program 1 times [2024-11-13 15:24:32,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:32,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104249871] [2024-11-13 15:24:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:32,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104249871] [2024-11-13 15:24:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104249871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:33,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244367701] [2024-11-13 15:24:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:33,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:33,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:33,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:24:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:33,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:24:33,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:33,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:24:33,540 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 [2024-11-13 15:24:33,601 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:24:33,602 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 11 treesize of output 11 [2024-11-13 15:24:33,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:24:33,750 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 17 treesize of output 9 [2024-11-13 15:24:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:33,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:34,020 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_234 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| Int)) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150| v_ArrVal_234) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_150|) 0)))) is different from false [2024-11-13 15:24:34,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:34,063 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-13 15:24:34,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:34,085 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 39 treesize of output 35 [2024-11-13 15:24:34,095 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 11 treesize of output 9 [2024-11-13 15:24:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-13 15:24:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244367701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:34,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-11-13 15:24:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261365467] [2024-11-13 15:24:34,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:34,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:24:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:24:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=320, Unknown=7, NotChecked=36, Total=420 [2024-11-13 15:24:34,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-13 15:24:34,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 224 transitions, 1590 flow. Second operand has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 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) [2024-11-13 15:24:34,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:34,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-13 15:24:34,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:38,365 INFO L124 PetriNetUnfolderBase]: 8564/15865 cut-off events. [2024-11-13 15:24:38,365 INFO L125 PetriNetUnfolderBase]: For 24461/25588 co-relation queries the response was YES. [2024-11-13 15:24:38,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45007 conditions, 15865 events. 8564/15865 cut-off events. For 24461/25588 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 130548 event pairs, 1726 based on Foata normal form. 497/15181 useless extension candidates. Maximal degree in co-relation 44964. Up to 2896 conditions per place. [2024-11-13 15:24:38,538 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 605 selfloop transitions, 71 changer transitions 0/698 dead transitions. [2024-11-13 15:24:38,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 5410 flow [2024-11-13 15:24:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:24:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-13 15:24:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-11-13 15:24:38,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-11-13 15:24:38,541 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 1590 flow. Second operand 30 states and 1093 transitions. [2024-11-13 15:24:38,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 5410 flow [2024-11-13 15:24:38,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 698 transitions, 5384 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-13 15:24:38,667 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 1809 flow [2024-11-13 15:24:38,668 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1809, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-11-13 15:24:38,668 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 140 predicate places. [2024-11-13 15:24:38,669 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 1809 flow [2024-11-13 15:24:38,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 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) [2024-11-13 15:24:38,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:38,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:38,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:24:38,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:38,870 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:38,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1161022220, now seen corresponding path program 1 times [2024-11-13 15:24:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:38,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516820280] [2024-11-13 15:24:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:38,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516820280] [2024-11-13 15:24:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516820280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407749874] [2024-11-13 15:24:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:39,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:39,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:39,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:39,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:24:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:39,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:24:39,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:39,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:24:39,866 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 [2024-11-13 15:24:39,925 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:24:39,926 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 11 treesize of output 11 [2024-11-13 15:24:39,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:24:40,062 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 17 treesize of output 9 [2024-11-13 15:24:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:40,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:40,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:40,307 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-13 15:24:40,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:40,320 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 39 treesize of output 35 [2024-11-13 15:24:40,327 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 11 treesize of output 9 [2024-11-13 15:24:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:40,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407749874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:40,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:40,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-11-13 15:24:40,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694191699] [2024-11-13 15:24:40,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:40,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:24:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:24:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=350, Unknown=4, NotChecked=0, Total=420 [2024-11-13 15:24:41,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-13 15:24:41,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 1809 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 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) [2024-11-13 15:24:41,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:41,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-13 15:24:41,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:44,819 INFO L124 PetriNetUnfolderBase]: 9172/16435 cut-off events. [2024-11-13 15:24:44,819 INFO L125 PetriNetUnfolderBase]: For 37250/37920 co-relation queries the response was YES. [2024-11-13 15:24:44,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49496 conditions, 16435 events. 9172/16435 cut-off events. For 37250/37920 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130234 event pairs, 2758 based on Foata normal form. 294/15585 useless extension candidates. Maximal degree in co-relation 49447. Up to 3417 conditions per place. [2024-11-13 15:24:45,030 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 423 selfloop transitions, 67 changer transitions 0/518 dead transitions. [2024-11-13 15:24:45,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 4442 flow [2024-11-13 15:24:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:24:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:24:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-11-13 15:24:45,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-11-13 15:24:45,033 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 1809 flow. Second operand 24 states and 892 transitions. [2024-11-13 15:24:45,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 4442 flow [2024-11-13 15:24:45,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 518 transitions, 4192 flow, removed 25 selfloop flow, removed 17 redundant places. [2024-11-13 15:24:45,183 INFO L231 Difference]: Finished difference. Result has 229 places, 241 transitions, 1909 flow [2024-11-13 15:24:45,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1909, PETRI_PLACES=229, PETRI_TRANSITIONS=241} [2024-11-13 15:24:45,184 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 150 predicate places. [2024-11-13 15:24:45,184 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 241 transitions, 1909 flow [2024-11-13 15:24:45,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 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) [2024-11-13 15:24:45,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:45,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:45,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:24:45,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 15:24:45,386 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:45,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash 833366081, now seen corresponding path program 1 times [2024-11-13 15:24:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:45,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263544209] [2024-11-13 15:24:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:46,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:46,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263544209] [2024-11-13 15:24:46,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263544209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:46,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751071422] [2024-11-13 15:24:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:46,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:46,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:46,218 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:46,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:24:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:46,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:24:46,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:46,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:24:46,396 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 [2024-11-13 15:24:46,452 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:24:46,452 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 11 treesize of output 11 [2024-11-13 15:24:46,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 15:24:46,575 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 15 treesize of output 7 [2024-11-13 15:24:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:24:46,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:46,852 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154| Int) (v_ArrVal_273 (Array Int Int))) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154| v_ArrVal_273) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483648) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_154|) 0)))) is different from false [2024-11-13 15:24:46,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:46,882 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 15:24:46,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:24:46,893 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 33 treesize of output 29 [2024-11-13 15:24:46,899 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 9 treesize of output 7 [2024-11-13 15:24:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-13 15:24:46,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751071422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:46,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:46,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-11-13 15:24:46,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047695556] [2024-11-13 15:24:46,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:46,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:24:46,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:24:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=389, Unknown=10, NotChecked=40, Total=506 [2024-11-13 15:24:47,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-11-13 15:24:47,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 1909 flow. Second operand has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 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) [2024-11-13 15:24:47,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:47,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-11-13 15:24:47,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:51,740 INFO L124 PetriNetUnfolderBase]: 9256/16029 cut-off events. [2024-11-13 15:24:51,741 INFO L125 PetriNetUnfolderBase]: For 32227/33161 co-relation queries the response was YES. [2024-11-13 15:24:51,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50497 conditions, 16029 events. 9256/16029 cut-off events. For 32227/33161 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 123417 event pairs, 1968 based on Foata normal form. 880/15943 useless extension candidates. Maximal degree in co-relation 50445. Up to 3359 conditions per place. [2024-11-13 15:24:51,896 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 608 selfloop transitions, 77 changer transitions 42/758 dead transitions. [2024-11-13 15:24:51,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 758 transitions, 6344 flow [2024-11-13 15:24:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 15:24:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-13 15:24:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-11-13 15:24:51,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-11-13 15:24:51,900 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 1909 flow. Second operand 32 states and 1162 transitions. [2024-11-13 15:24:51,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 758 transitions, 6344 flow [2024-11-13 15:24:52,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 758 transitions, 6068 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-11-13 15:24:52,024 INFO L231 Difference]: Finished difference. Result has 247 places, 254 transitions, 2067 flow [2024-11-13 15:24:52,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2067, PETRI_PLACES=247, PETRI_TRANSITIONS=254} [2024-11-13 15:24:52,025 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-11-13 15:24:52,025 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 254 transitions, 2067 flow [2024-11-13 15:24:52,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 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) [2024-11-13 15:24:52,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:52,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:52,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:24:52,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:52,226 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:52,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1011803057, now seen corresponding path program 1 times [2024-11-13 15:24:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603043343] [2024-11-13 15:24:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:24:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603043343] [2024-11-13 15:24:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603043343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:24:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:24:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:24:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573067668] [2024-11-13 15:24:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:24:52,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:24:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:24:52,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:24:52,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:24:52,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 254 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:24:52,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:52,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:24:52,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:54,819 INFO L124 PetriNetUnfolderBase]: 6281/13692 cut-off events. [2024-11-13 15:24:54,819 INFO L125 PetriNetUnfolderBase]: For 32855/33189 co-relation queries the response was YES. [2024-11-13 15:24:54,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42990 conditions, 13692 events. 6281/13692 cut-off events. For 32855/33189 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 128177 event pairs, 2748 based on Foata normal form. 404/13126 useless extension candidates. Maximal degree in co-relation 42934. Up to 5977 conditions per place. [2024-11-13 15:24:54,973 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 249 selfloop transitions, 14 changer transitions 15/322 dead transitions. [2024-11-13 15:24:54,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 3048 flow [2024-11-13 15:24:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:24:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:24:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-11-13 15:24:54,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-11-13 15:24:54,975 INFO L175 Difference]: Start difference. First operand has 247 places, 254 transitions, 2067 flow. Second operand 4 states and 237 transitions. [2024-11-13 15:24:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 3048 flow [2024-11-13 15:24:55,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 322 transitions, 2877 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-11-13 15:24:55,219 INFO L231 Difference]: Finished difference. Result has 227 places, 245 transitions, 1853 flow [2024-11-13 15:24:55,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1853, PETRI_PLACES=227, PETRI_TRANSITIONS=245} [2024-11-13 15:24:55,220 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-11-13 15:24:55,220 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 245 transitions, 1853 flow [2024-11-13 15:24:55,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:24:55,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:55,220 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] [2024-11-13 15:24:55,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 15:24:55,221 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:55,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1661547066, now seen corresponding path program 1 times [2024-11-13 15:24:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:55,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269627907] [2024-11-13 15:24:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:24:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269627907] [2024-11-13 15:24:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269627907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294904649] [2024-11-13 15:24:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:55,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:55,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:55,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:55,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:24:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:55,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:24:55,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:24:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:55,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:24:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:55,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294904649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:24:55,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:24:55,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-13 15:24:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631753015] [2024-11-13 15:24:55,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:24:55,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:24:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:24:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:24:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:24:56,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:24:56,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 245 transitions, 1853 flow. Second operand has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 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) [2024-11-13 15:24:56,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:24:56,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:24:56,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:24:59,151 INFO L124 PetriNetUnfolderBase]: 4196/9871 cut-off events. [2024-11-13 15:24:59,151 INFO L125 PetriNetUnfolderBase]: For 22834/23334 co-relation queries the response was YES. [2024-11-13 15:24:59,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29001 conditions, 9871 events. 4196/9871 cut-off events. For 22834/23334 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 91619 event pairs, 132 based on Foata normal form. 208/9192 useless extension candidates. Maximal degree in co-relation 28949. Up to 2104 conditions per place. [2024-11-13 15:24:59,228 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 297 selfloop transitions, 63 changer transitions 44/447 dead transitions. [2024-11-13 15:24:59,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 447 transitions, 3910 flow [2024-11-13 15:24:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:24:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:24:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-11-13 15:24:59,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-11-13 15:24:59,230 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 1853 flow. Second operand 17 states and 884 transitions. [2024-11-13 15:24:59,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 447 transitions, 3910 flow [2024-11-13 15:24:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 3782 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-13 15:24:59,326 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 1855 flow [2024-11-13 15:24:59,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1855, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2024-11-13 15:24:59,327 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-11-13 15:24:59,327 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 1855 flow [2024-11-13 15:24:59,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 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) [2024-11-13 15:24:59,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:24:59,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:24:59,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:24:59,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:24:59,528 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:24:59,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:24:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1631950637, now seen corresponding path program 1 times [2024-11-13 15:24:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:24:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528666308] [2024-11-13 15:24:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:24:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:24:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:24:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528666308] [2024-11-13 15:24:59,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528666308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:24:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750616759] [2024-11-13 15:24:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:24:59,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:24:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:24:59,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:24:59,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:24:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:24:59,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:24:59,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:00,015 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 [2024-11-13 15:25:00,114 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 17 treesize of output 9 [2024-11-13 15:25:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:00,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:00,272 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 16 treesize of output 14 [2024-11-13 15:25:00,276 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 22 treesize of output 20 [2024-11-13 15:25:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750616759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:00,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-13 15:25:00,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238503593] [2024-11-13 15:25:00,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:00,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:25:00,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:25:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:25:00,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-13 15:25:00,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 1855 flow. Second operand has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 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) [2024-11-13 15:25:00,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:00,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-13 15:25:00,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:02,454 INFO L124 PetriNetUnfolderBase]: 6240/11678 cut-off events. [2024-11-13 15:25:02,455 INFO L125 PetriNetUnfolderBase]: For 27286/28036 co-relation queries the response was YES. [2024-11-13 15:25:02,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36706 conditions, 11678 events. 6240/11678 cut-off events. For 27286/28036 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 92366 event pairs, 1392 based on Foata normal form. 330/11547 useless extension candidates. Maximal degree in co-relation 36655. Up to 2956 conditions per place. [2024-11-13 15:25:02,812 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 480 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-11-13 15:25:02,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 576 transitions, 5133 flow [2024-11-13 15:25:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:25:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:25:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 718 transitions. [2024-11-13 15:25:02,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963455149501661 [2024-11-13 15:25:02,815 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 1855 flow. Second operand 14 states and 718 transitions. [2024-11-13 15:25:02,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 576 transitions, 5133 flow [2024-11-13 15:25:02,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 576 transitions, 5054 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-13 15:25:02,891 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 1975 flow [2024-11-13 15:25:02,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1975, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2024-11-13 15:25:02,892 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-13 15:25:02,892 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 1975 flow [2024-11-13 15:25:02,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 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) [2024-11-13 15:25:02,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:02,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:02,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:25:03,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 15:25:03,093 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 949138647, now seen corresponding path program 1 times [2024-11-13 15:25:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096475702] [2024-11-13 15:25:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096475702] [2024-11-13 15:25:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096475702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537354274] [2024-11-13 15:25:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:03,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:03,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:03,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:25:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:03,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:25:03,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:03,716 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 [2024-11-13 15:25:03,810 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 15 treesize of output 7 [2024-11-13 15:25:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:03,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:04,013 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 14 treesize of output 12 [2024-11-13 15:25:04,018 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 18 treesize of output 16 [2024-11-13 15:25:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:04,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537354274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:04,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-13 15:25:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248036339] [2024-11-13 15:25:04,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:04,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:25:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:25:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:25:04,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-11-13 15:25:04,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 1975 flow. Second operand has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 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) [2024-11-13 15:25:04,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:04,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-11-13 15:25:04,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:06,769 INFO L124 PetriNetUnfolderBase]: 6006/11460 cut-off events. [2024-11-13 15:25:06,770 INFO L125 PetriNetUnfolderBase]: For 30828/31564 co-relation queries the response was YES. [2024-11-13 15:25:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 11460 events. 6006/11460 cut-off events. For 30828/31564 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 92326 event pairs, 1476 based on Foata normal form. 580/11525 useless extension candidates. Maximal degree in co-relation 38488. Up to 3112 conditions per place. [2024-11-13 15:25:06,880 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 431 selfloop transitions, 64 changer transitions 87/620 dead transitions. [2024-11-13 15:25:06,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 620 transitions, 5627 flow [2024-11-13 15:25:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:25:06,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:25:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-11-13 15:25:06,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-11-13 15:25:06,882 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 1975 flow. Second operand 15 states and 777 transitions. [2024-11-13 15:25:06,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 620 transitions, 5627 flow [2024-11-13 15:25:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 620 transitions, 5535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-13 15:25:07,008 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2096 flow [2024-11-13 15:25:07,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2096, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2024-11-13 15:25:07,009 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2024-11-13 15:25:07,009 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2096 flow [2024-11-13 15:25:07,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 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) [2024-11-13 15:25:07,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:07,009 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:07,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 15:25:07,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:25:07,210 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:07,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -580154750, now seen corresponding path program 1 times [2024-11-13 15:25:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:07,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303446698] [2024-11-13 15:25:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:07,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303446698] [2024-11-13 15:25:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303446698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195601777] [2024-11-13 15:25:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:07,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:07,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:25:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:07,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:25:07,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:07,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195601777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:07,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-13 15:25:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620099940] [2024-11-13 15:25:07,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:07,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:25:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:25:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:25:08,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:25:08,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2096 flow. Second operand has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 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) [2024-11-13 15:25:08,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:08,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:25:08,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:11,169 INFO L124 PetriNetUnfolderBase]: 6928/16398 cut-off events. [2024-11-13 15:25:11,169 INFO L125 PetriNetUnfolderBase]: For 46147/46403 co-relation queries the response was YES. [2024-11-13 15:25:11,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56114 conditions, 16398 events. 6928/16398 cut-off events. For 46147/46403 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 166267 event pairs, 4176 based on Foata normal form. 192/16186 useless extension candidates. Maximal degree in co-relation 56054. Up to 6481 conditions per place. [2024-11-13 15:25:11,339 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 100 changer transitions 48/418 dead transitions. [2024-11-13 15:25:11,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 4093 flow [2024-11-13 15:25:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:25:11,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:25:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2024-11-13 15:25:11,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-11-13 15:25:11,341 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2096 flow. Second operand 10 states and 528 transitions. [2024-11-13 15:25:11,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 4093 flow [2024-11-13 15:25:11,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 3890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-11-13 15:25:11,805 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 2273 flow [2024-11-13 15:25:11,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2024-11-13 15:25:11,806 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2024-11-13 15:25:11,806 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 2273 flow [2024-11-13 15:25:11,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 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) [2024-11-13 15:25:11,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:11,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:11,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:25:12,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:25:12,008 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:12,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 305844921, now seen corresponding path program 1 times [2024-11-13 15:25:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:12,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081898317] [2024-11-13 15:25:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:25:12,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081898317] [2024-11-13 15:25:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081898317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:25:12,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:25:12,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:25:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948083340] [2024-11-13 15:25:12,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:25:12,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:25:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:25:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:25:12,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:25:12,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 2273 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-13 15:25:12,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:12,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:25:12,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:14,820 INFO L124 PetriNetUnfolderBase]: 8890/18347 cut-off events. [2024-11-13 15:25:14,820 INFO L125 PetriNetUnfolderBase]: For 52225/52638 co-relation queries the response was YES. [2024-11-13 15:25:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63202 conditions, 18347 events. 8890/18347 cut-off events. For 52225/52638 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 170415 event pairs, 3966 based on Foata normal form. 541/18467 useless extension candidates. Maximal degree in co-relation 63141. Up to 8293 conditions per place. [2024-11-13 15:25:15,050 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 237 selfloop transitions, 10 changer transitions 64/350 dead transitions. [2024-11-13 15:25:15,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 350 transitions, 3655 flow [2024-11-13 15:25:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:25:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:25:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-11-13 15:25:15,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-11-13 15:25:15,051 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 2273 flow. Second operand 4 states and 235 transitions. [2024-11-13 15:25:15,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 350 transitions, 3655 flow [2024-11-13 15:25:15,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 350 transitions, 3611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:25:15,484 INFO L231 Difference]: Finished difference. Result has 252 places, 218 transitions, 1892 flow [2024-11-13 15:25:15,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1892, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2024-11-13 15:25:15,485 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 173 predicate places. [2024-11-13 15:25:15,485 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 1892 flow [2024-11-13 15:25:15,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-13 15:25:15,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:15,485 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] [2024-11-13 15:25:15,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 15:25:15,485 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:15,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash 881830099, now seen corresponding path program 1 times [2024-11-13 15:25:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:15,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986551761] [2024-11-13 15:25:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:15,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986551761] [2024-11-13 15:25:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986551761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057137748] [2024-11-13 15:25:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:15,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:15,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:15,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:15,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:25:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:15,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:25:15,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:15,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057137748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:16,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-13 15:25:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108319913] [2024-11-13 15:25:16,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:16,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:25:16,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:25:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:25:16,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-11-13 15:25:16,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 1892 flow. Second operand has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 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) [2024-11-13 15:25:16,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:16,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-11-13 15:25:16,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:18,826 INFO L124 PetriNetUnfolderBase]: 4480/10282 cut-off events. [2024-11-13 15:25:18,826 INFO L125 PetriNetUnfolderBase]: For 31319/31513 co-relation queries the response was YES. [2024-11-13 15:25:18,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36190 conditions, 10282 events. 4480/10282 cut-off events. For 31319/31513 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 94449 event pairs, 2484 based on Foata normal form. 90/10133 useless extension candidates. Maximal degree in co-relation 36129. Up to 5059 conditions per place. [2024-11-13 15:25:18,965 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 79 selfloop transitions, 92 changer transitions 99/313 dead transitions. [2024-11-13 15:25:18,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 313 transitions, 3048 flow [2024-11-13 15:25:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:25:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:25:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2024-11-13 15:25:18,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2024-11-13 15:25:18,967 INFO L175 Difference]: Start difference. First operand has 252 places, 218 transitions, 1892 flow. Second operand 10 states and 524 transitions. [2024-11-13 15:25:18,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 313 transitions, 3048 flow [2024-11-13 15:25:19,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 313 transitions, 3003 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-13 15:25:19,197 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1990 flow [2024-11-13 15:25:19,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-11-13 15:25:19,197 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2024-11-13 15:25:19,197 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1990 flow [2024-11-13 15:25:19,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 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) [2024-11-13 15:25:19,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:19,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:19,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:25:19,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:19,399 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:19,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:19,399 INFO L85 PathProgramCache]: Analyzing trace with hash 823146539, now seen corresponding path program 2 times [2024-11-13 15:25:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922944082] [2024-11-13 15:25:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:25:19,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922944082] [2024-11-13 15:25:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922944082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807630635] [2024-11-13 15:25:19,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:25:19,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:19,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:19,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:19,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:25:19,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:25:19,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:25:19,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:25:19,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:25:19,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:25:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807630635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:19,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:19,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-13 15:25:19,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369413655] [2024-11-13 15:25:19,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:19,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:25:19,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:25:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:25:19,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:25:19,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 1990 flow. Second operand has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 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) [2024-11-13 15:25:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:25:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:21,773 INFO L124 PetriNetUnfolderBase]: 4995/10977 cut-off events. [2024-11-13 15:25:21,773 INFO L125 PetriNetUnfolderBase]: For 29488/30168 co-relation queries the response was YES. [2024-11-13 15:25:21,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37599 conditions, 10977 events. 4995/10977 cut-off events. For 29488/30168 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 99690 event pairs, 306 based on Foata normal form. 460/11425 useless extension candidates. Maximal degree in co-relation 37540. Up to 2264 conditions per place. [2024-11-13 15:25:21,916 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 376 selfloop transitions, 9 changer transitions 0/429 dead transitions. [2024-11-13 15:25:21,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 4142 flow [2024-11-13 15:25:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:25:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:25:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2024-11-13 15:25:21,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235142118863049 [2024-11-13 15:25:21,918 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1990 flow. Second operand 9 states and 560 transitions. [2024-11-13 15:25:21,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 4142 flow [2024-11-13 15:25:22,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 429 transitions, 3882 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-11-13 15:25:22,114 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1816 flow [2024-11-13 15:25:22,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1816, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-11-13 15:25:22,115 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 144 predicate places. [2024-11-13 15:25:22,115 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1816 flow [2024-11-13 15:25:22,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 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) [2024-11-13 15:25:22,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:22,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:22,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:25:22,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:22,316 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:22,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -252292041, now seen corresponding path program 1 times [2024-11-13 15:25:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:22,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756029302] [2024-11-13 15:25:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:25:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:22,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756029302] [2024-11-13 15:25:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756029302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657836666] [2024-11-13 15:25:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:22,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:22,903 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:22,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:25:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:23,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:25:23,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:23,125 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 19 treesize of output 1 [2024-11-13 15:25:23,258 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 19 treesize of output 7 [2024-11-13 15:25:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:23,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:23,417 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 16 treesize of output 14 [2024-11-13 15:25:23,420 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 20 treesize of output 16 [2024-11-13 15:25:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657836666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:23,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-13 15:25:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716650556] [2024-11-13 15:25:23,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:23,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:25:23,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:25:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:25:23,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-11-13 15:25:23,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1816 flow. Second operand has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 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) [2024-11-13 15:25:23,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:23,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-11-13 15:25:23,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:26,637 INFO L124 PetriNetUnfolderBase]: 5289/11442 cut-off events. [2024-11-13 15:25:26,637 INFO L125 PetriNetUnfolderBase]: For 28804/29347 co-relation queries the response was YES. [2024-11-13 15:25:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39186 conditions, 11442 events. 5289/11442 cut-off events. For 28804/29347 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 102579 event pairs, 1403 based on Foata normal form. 345/11519 useless extension candidates. Maximal degree in co-relation 39134. Up to 2338 conditions per place. [2024-11-13 15:25:26,770 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 366 selfloop transitions, 56 changer transitions 30/493 dead transitions. [2024-11-13 15:25:26,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 4462 flow [2024-11-13 15:25:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:25:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-13 15:25:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 807 transitions. [2024-11-13 15:25:26,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864825581395349 [2024-11-13 15:25:26,772 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1816 flow. Second operand 16 states and 807 transitions. [2024-11-13 15:25:26,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 4462 flow [2024-11-13 15:25:26,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 493 transitions, 4448 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:25:26,967 INFO L231 Difference]: Finished difference. Result has 236 places, 223 transitions, 2009 flow [2024-11-13 15:25:26,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2009, PETRI_PLACES=236, PETRI_TRANSITIONS=223} [2024-11-13 15:25:26,967 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 157 predicate places. [2024-11-13 15:25:26,967 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 2009 flow [2024-11-13 15:25:26,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 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) [2024-11-13 15:25:26,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:26,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:26,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 15:25:27,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:27,172 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:27,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 768850350, now seen corresponding path program 1 times [2024-11-13 15:25:27,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:27,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121221374] [2024-11-13 15:25:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:25:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121221374] [2024-11-13 15:25:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121221374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:27,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280169468] [2024-11-13 15:25:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:27,708 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:27,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:25:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:27,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:25:27,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:27,912 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 19 treesize of output 1 [2024-11-13 15:25:28,083 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 9 [2024-11-13 15:25:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:28,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:28,262 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 18 treesize of output 16 [2024-11-13 15:25:28,266 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 24 treesize of output 20 [2024-11-13 15:25:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:25:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280169468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:28,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-13 15:25:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151643258] [2024-11-13 15:25:28,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:28,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:25:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:25:28,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:25:28,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-11-13 15:25:28,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 223 transitions, 2009 flow. Second operand has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 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) [2024-11-13 15:25:28,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:28,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-11-13 15:25:28,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:31,455 INFO L124 PetriNetUnfolderBase]: 5779/11761 cut-off events. [2024-11-13 15:25:31,455 INFO L125 PetriNetUnfolderBase]: For 36321/37075 co-relation queries the response was YES. [2024-11-13 15:25:31,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41852 conditions, 11761 events. 5779/11761 cut-off events. For 36321/37075 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 101291 event pairs, 1341 based on Foata normal form. 452/11939 useless extension candidates. Maximal degree in co-relation 41796. Up to 2806 conditions per place. [2024-11-13 15:25:31,564 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 353 selfloop transitions, 52 changer transitions 15/459 dead transitions. [2024-11-13 15:25:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 459 transitions, 4318 flow [2024-11-13 15:25:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:25:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:25:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 720 transitions. [2024-11-13 15:25:31,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-13 15:25:31,566 INFO L175 Difference]: Start difference. First operand has 236 places, 223 transitions, 2009 flow. Second operand 15 states and 720 transitions. [2024-11-13 15:25:31,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 459 transitions, 4318 flow [2024-11-13 15:25:31,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 459 transitions, 4267 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-13 15:25:31,740 INFO L231 Difference]: Finished difference. Result has 242 places, 223 transitions, 2077 flow [2024-11-13 15:25:31,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2077, PETRI_PLACES=242, PETRI_TRANSITIONS=223} [2024-11-13 15:25:31,741 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 163 predicate places. [2024-11-13 15:25:31,741 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 223 transitions, 2077 flow [2024-11-13 15:25:31,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 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) [2024-11-13 15:25:31,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:31,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:31,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:25:31,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 15:25:31,942 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:31,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 834637884, now seen corresponding path program 2 times [2024-11-13 15:25:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536418287] [2024-11-13 15:25:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:31,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:25:32,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536418287] [2024-11-13 15:25:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536418287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:32,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64974294] [2024-11-13 15:25:32,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:25:32,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:32,037 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:32,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:25:32,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:25:32,175 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:25:32,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:25:32,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:25:32,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:25:32,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64974294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:32,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:32,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-11-13 15:25:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014989850] [2024-11-13 15:25:32,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:32,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:25:32,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:32,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:25:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:25:32,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-11-13 15:25:32,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 223 transitions, 2077 flow. Second operand has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2024-11-13 15:25:32,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:32,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-11-13 15:25:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:35,054 INFO L124 PetriNetUnfolderBase]: 7735/17110 cut-off events. [2024-11-13 15:25:35,055 INFO L125 PetriNetUnfolderBase]: For 62794/64346 co-relation queries the response was YES. [2024-11-13 15:25:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59496 conditions, 17110 events. 7735/17110 cut-off events. For 62794/64346 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 165199 event pairs, 531 based on Foata normal form. 756/17485 useless extension candidates. Maximal degree in co-relation 59439. Up to 3474 conditions per place. [2024-11-13 15:25:35,295 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 430 selfloop transitions, 9 changer transitions 0/483 dead transitions. [2024-11-13 15:25:35,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 483 transitions, 5018 flow [2024-11-13 15:25:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:25:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:25:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2024-11-13 15:25:35,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7118863049095607 [2024-11-13 15:25:35,296 INFO L175 Difference]: Start difference. First operand has 242 places, 223 transitions, 2077 flow. Second operand 9 states and 551 transitions. [2024-11-13 15:25:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 483 transitions, 5018 flow [2024-11-13 15:25:36,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 483 transitions, 4809 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-13 15:25:36,026 INFO L231 Difference]: Finished difference. Result has 238 places, 225 transitions, 2002 flow [2024-11-13 15:25:36,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2002, PETRI_PLACES=238, PETRI_TRANSITIONS=225} [2024-11-13 15:25:36,027 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-11-13 15:25:36,027 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 225 transitions, 2002 flow [2024-11-13 15:25:36,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2024-11-13 15:25:36,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:36,028 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:36,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:25:36,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 15:25:36,233 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:36,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1935443143, now seen corresponding path program 1 times [2024-11-13 15:25:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96887771] [2024-11-13 15:25:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:36,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96887771] [2024-11-13 15:25:36,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96887771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422869652] [2024-11-13 15:25:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:36,791 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:36,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:25:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:36,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:25:36,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:36,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:25:37,017 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 19 treesize of output 1 [2024-11-13 15:25:37,061 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:25:37,062 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 11 treesize of output 11 [2024-11-13 15:25:37,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:25:37,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:25:37,261 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 9 [2024-11-13 15:25:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:37,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:37,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:37,657 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 15:25:37,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:37,672 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 43 treesize of output 37 [2024-11-13 15:25:37,678 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 13 treesize of output 9 [2024-11-13 15:25:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422869652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:37,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:37,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-13 15:25:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597412493] [2024-11-13 15:25:37,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:37,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:25:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:25:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=883, Unknown=10, NotChecked=0, Total=992 [2024-11-13 15:25:38,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-13 15:25:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 225 transitions, 2002 flow. Second operand has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 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) [2024-11-13 15:25:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-13 15:25:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:44,330 INFO L124 PetriNetUnfolderBase]: 13055/22275 cut-off events. [2024-11-13 15:25:44,330 INFO L125 PetriNetUnfolderBase]: For 64190/66030 co-relation queries the response was YES. [2024-11-13 15:25:44,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80759 conditions, 22275 events. 13055/22275 cut-off events. For 64190/66030 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 177137 event pairs, 2637 based on Foata normal form. 1216/23421 useless extension candidates. Maximal degree in co-relation 80703. Up to 5316 conditions per place. [2024-11-13 15:25:44,535 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 565 selfloop transitions, 63 changer transitions 30/683 dead transitions. [2024-11-13 15:25:44,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 683 transitions, 6259 flow [2024-11-13 15:25:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:25:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-13 15:25:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 969 transitions. [2024-11-13 15:25:44,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45069767441860464 [2024-11-13 15:25:44,538 INFO L175 Difference]: Start difference. First operand has 238 places, 225 transitions, 2002 flow. Second operand 25 states and 969 transitions. [2024-11-13 15:25:44,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 683 transitions, 6259 flow [2024-11-13 15:25:44,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 683 transitions, 6089 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 15:25:44,877 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 2194 flow [2024-11-13 15:25:44,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2194, PETRI_PLACES=262, PETRI_TRANSITIONS=231} [2024-11-13 15:25:44,878 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 183 predicate places. [2024-11-13 15:25:44,878 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 2194 flow [2024-11-13 15:25:44,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 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) [2024-11-13 15:25:44,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:44,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:44,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 15:25:45,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 15:25:45,080 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:45,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash 104003267, now seen corresponding path program 1 times [2024-11-13 15:25:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039870212] [2024-11-13 15:25:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039870212] [2024-11-13 15:25:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039870212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948695222] [2024-11-13 15:25:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:45,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:45,521 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:45,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:25:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:45,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:25:45,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:45,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:25:45,738 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 19 treesize of output 1 [2024-11-13 15:25:45,781 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:25:45,781 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 11 treesize of output 11 [2024-11-13 15:25:45,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:25:45,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:25:45,956 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 19 treesize of output 7 [2024-11-13 15:25:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:45,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:46,226 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_535 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171| Int)) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171| v_ArrVal_535) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171|) 0)))) is different from false [2024-11-13 15:25:46,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:46,256 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-13 15:25:46,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:46,269 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 37 treesize of output 31 [2024-11-13 15:25:46,274 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 11 treesize of output 7 [2024-11-13 15:25:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-13 15:25:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948695222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:46,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:46,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-13 15:25:46,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307141673] [2024-11-13 15:25:46,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:46,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 15:25:46,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 15:25:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=766, Unknown=7, NotChecked=56, Total=930 [2024-11-13 15:25:46,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-13 15:25:46,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 231 transitions, 2194 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 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) [2024-11-13 15:25:46,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:46,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-13 15:25:46,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:25:52,203 INFO L124 PetriNetUnfolderBase]: 12663/22030 cut-off events. [2024-11-13 15:25:52,203 INFO L125 PetriNetUnfolderBase]: For 100813/103659 co-relation queries the response was YES. [2024-11-13 15:25:52,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84303 conditions, 22030 events. 12663/22030 cut-off events. For 100813/103659 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 176981 event pairs, 2541 based on Foata normal form. 1098/23093 useless extension candidates. Maximal degree in co-relation 84241. Up to 5156 conditions per place. [2024-11-13 15:25:52,647 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 481 selfloop transitions, 56 changer transitions 40/611 dead transitions. [2024-11-13 15:25:52,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 611 transitions, 6608 flow [2024-11-13 15:25:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:25:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-13 15:25:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 833 transitions. [2024-11-13 15:25:52,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-11-13 15:25:52,650 INFO L175 Difference]: Start difference. First operand has 262 places, 231 transitions, 2194 flow. Second operand 21 states and 833 transitions. [2024-11-13 15:25:52,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 611 transitions, 6608 flow [2024-11-13 15:25:53,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 611 transitions, 6296 flow, removed 30 selfloop flow, removed 14 redundant places. [2024-11-13 15:25:53,252 INFO L231 Difference]: Finished difference. Result has 271 places, 238 transitions, 2289 flow [2024-11-13 15:25:53,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2289, PETRI_PLACES=271, PETRI_TRANSITIONS=238} [2024-11-13 15:25:53,253 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 192 predicate places. [2024-11-13 15:25:53,253 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 238 transitions, 2289 flow [2024-11-13 15:25:53,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 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) [2024-11-13 15:25:53,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:25:53,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:25:53,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:25:53,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 15:25:53,454 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:25:53,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:25:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash 130805521, now seen corresponding path program 1 times [2024-11-13 15:25:53,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:25:53,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691270364] [2024-11-13 15:25:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:53,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:25:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:25:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691270364] [2024-11-13 15:25:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691270364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:25:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728826872] [2024-11-13 15:25:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:25:54,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:25:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:25:54,125 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:25:54,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:25:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:25:54,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:25:54,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:25:54,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:25:54,572 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 19 treesize of output 1 [2024-11-13 15:25:54,621 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:25:54,621 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 11 treesize of output 11 [2024-11-13 15:25:54,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:25:54,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:25:54,797 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 19 treesize of output 7 [2024-11-13 15:25:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:54,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:25:55,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:55,176 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-13 15:25:55,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:25:55,191 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 37 treesize of output 31 [2024-11-13 15:25:55,198 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 11 treesize of output 7 [2024-11-13 15:25:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:25:55,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728826872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:25:55,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:25:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-13 15:25:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022952911] [2024-11-13 15:25:55,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:25:55,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:25:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:25:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:25:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=946, Unknown=7, NotChecked=0, Total=1056 [2024-11-13 15:25:55,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-13 15:25:55,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 238 transitions, 2289 flow. Second operand has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 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) [2024-11-13 15:25:55,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:25:55,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-13 15:25:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:26:03,664 INFO L124 PetriNetUnfolderBase]: 13663/22889 cut-off events. [2024-11-13 15:26:03,664 INFO L125 PetriNetUnfolderBase]: For 88746/90950 co-relation queries the response was YES. [2024-11-13 15:26:03,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89606 conditions, 22889 events. 13663/22889 cut-off events. For 88746/90950 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 178181 event pairs, 3165 based on Foata normal form. 1394/24215 useless extension candidates. Maximal degree in co-relation 89541. Up to 6284 conditions per place. [2024-11-13 15:26:03,886 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 568 selfloop transitions, 60 changer transitions 144/800 dead transitions. [2024-11-13 15:26:03,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 800 transitions, 8156 flow [2024-11-13 15:26:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:26:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 15:26:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1006 transitions. [2024-11-13 15:26:03,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44991055456171736 [2024-11-13 15:26:03,888 INFO L175 Difference]: Start difference. First operand has 271 places, 238 transitions, 2289 flow. Second operand 26 states and 1006 transitions. [2024-11-13 15:26:03,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 800 transitions, 8156 flow [2024-11-13 15:26:04,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 800 transitions, 7943 flow, removed 15 selfloop flow, removed 16 redundant places. [2024-11-13 15:26:04,247 INFO L231 Difference]: Finished difference. Result has 284 places, 242 transitions, 2379 flow [2024-11-13 15:26:04,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2379, PETRI_PLACES=284, PETRI_TRANSITIONS=242} [2024-11-13 15:26:04,248 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 205 predicate places. [2024-11-13 15:26:04,249 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 242 transitions, 2379 flow [2024-11-13 15:26:04,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 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) [2024-11-13 15:26:04,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:26:04,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:26:04,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:26:04,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 15:26:04,450 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:26:04,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:26:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1070896958, now seen corresponding path program 1 times [2024-11-13 15:26:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:26:04,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779261464] [2024-11-13 15:26:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:04,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:26:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:26:04,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:26:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779261464] [2024-11-13 15:26:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779261464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:04,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122492909] [2024-11-13 15:26:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:26:04,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:26:04,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:26:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:05,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:26:05,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:26:05,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 15:26:05,190 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 19 treesize of output 1 [2024-11-13 15:26:05,243 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:26:05,243 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 11 treesize of output 11 [2024-11-13 15:26:05,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:26:05,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:26:05,466 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 9 [2024-11-13 15:26:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:26:05,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:05,908 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:26:05,908 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 15:26:05,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:26:05,920 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 43 treesize of output 37 [2024-11-13 15:26:05,926 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 13 treesize of output 9 [2024-11-13 15:26:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:26:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122492909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:26:06,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:26:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-11-13 15:26:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007152893] [2024-11-13 15:26:06,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:06,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 15:26:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:06,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 15:26:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=821, Unknown=5, NotChecked=0, Total=930 [2024-11-13 15:26:06,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-13 15:26:06,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 242 transitions, 2379 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 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) [2024-11-13 15:26:06,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:26:06,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-13 15:26:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:26:12,692 INFO L124 PetriNetUnfolderBase]: 12509/21812 cut-off events. [2024-11-13 15:26:12,693 INFO L125 PetriNetUnfolderBase]: For 115559/117909 co-relation queries the response was YES. [2024-11-13 15:26:12,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87907 conditions, 21812 events. 12509/21812 cut-off events. For 115559/117909 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 175236 event pairs, 3077 based on Foata normal form. 944/22717 useless extension candidates. Maximal degree in co-relation 87839. Up to 6140 conditions per place. [2024-11-13 15:26:12,969 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 466 selfloop transitions, 52 changer transitions 26/580 dead transitions. [2024-11-13 15:26:12,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 580 transitions, 6442 flow [2024-11-13 15:26:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:26:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 15:26:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 778 transitions. [2024-11-13 15:26:12,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45232558139534884 [2024-11-13 15:26:12,972 INFO L175 Difference]: Start difference. First operand has 284 places, 242 transitions, 2379 flow. Second operand 20 states and 778 transitions. [2024-11-13 15:26:12,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 580 transitions, 6442 flow [2024-11-13 15:26:13,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 580 transitions, 6064 flow, removed 18 selfloop flow, removed 21 redundant places. [2024-11-13 15:26:13,852 INFO L231 Difference]: Finished difference. Result has 283 places, 242 transitions, 2372 flow [2024-11-13 15:26:13,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2372, PETRI_PLACES=283, PETRI_TRANSITIONS=242} [2024-11-13 15:26:13,853 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 204 predicate places. [2024-11-13 15:26:13,853 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 242 transitions, 2372 flow [2024-11-13 15:26:13,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 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) [2024-11-13 15:26:13,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:26:13,854 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:26:13,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 15:26:14,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 15:26:14,055 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:26:14,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:26:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash -28546449, now seen corresponding path program 2 times [2024-11-13 15:26:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:26:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357698269] [2024-11-13 15:26:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:26:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:14,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:26:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357698269] [2024-11-13 15:26:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357698269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775423626] [2024-11-13 15:26:14,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:26:14,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:26:14,254 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:26:14,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:26:14,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:26:14,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:26:14,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:26:14,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:26:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:14,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775423626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:26:14,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:26:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-13 15:26:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5988735] [2024-11-13 15:26:14,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 15:26:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 15:26:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:26:15,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-13 15:26:15,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 242 transitions, 2372 flow. Second operand has 34 states, 34 states have (on average 37.588235294117645) internal successors, (1278), 34 states have internal predecessors, (1278), 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) [2024-11-13 15:26:15,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:26:15,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-13 15:26:15,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:26:28,875 INFO L124 PetriNetUnfolderBase]: 23709/50270 cut-off events. [2024-11-13 15:26:28,876 INFO L125 PetriNetUnfolderBase]: For 226064/228745 co-relation queries the response was YES. [2024-11-13 15:26:29,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193397 conditions, 50270 events. 23709/50270 cut-off events. For 226064/228745 co-relation queries the response was YES. Maximal size of possible extension queue 1886. Compared 551703 event pairs, 7070 based on Foata normal form. 1875/52008 useless extension candidates. Maximal degree in co-relation 193329. Up to 11880 conditions per place. [2024-11-13 15:26:29,440 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 664 selfloop transitions, 97 changer transitions 324/1135 dead transitions. [2024-11-13 15:26:29,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1135 transitions, 12136 flow [2024-11-13 15:26:29,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:26:29,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-13 15:26:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1965 transitions. [2024-11-13 15:26:29,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5440199335548173 [2024-11-13 15:26:29,443 INFO L175 Difference]: Start difference. First operand has 283 places, 242 transitions, 2372 flow. Second operand 42 states and 1965 transitions. [2024-11-13 15:26:29,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 1135 transitions, 12136 flow [2024-11-13 15:26:33,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1135 transitions, 11697 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-11-13 15:26:33,065 INFO L231 Difference]: Finished difference. Result has 314 places, 286 transitions, 3173 flow [2024-11-13 15:26:33,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3173, PETRI_PLACES=314, PETRI_TRANSITIONS=286} [2024-11-13 15:26:33,066 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 235 predicate places. [2024-11-13 15:26:33,067 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 286 transitions, 3173 flow [2024-11-13 15:26:33,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 37.588235294117645) internal successors, (1278), 34 states have internal predecessors, (1278), 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) [2024-11-13 15:26:33,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:26:33,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:26:33,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:26:33,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 15:26:33,268 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:26:33,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:26:33,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1161932485, now seen corresponding path program 1 times [2024-11-13 15:26:33,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:26:33,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626325285] [2024-11-13 15:26:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:26:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:26:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:26:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626325285] [2024-11-13 15:26:33,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626325285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766143720] [2024-11-13 15:26:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:33,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:33,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:26:33,796 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:26:33,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:26:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:33,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:26:33,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:26:34,011 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 19 treesize of output 1 [2024-11-13 15:26:34,173 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 9 [2024-11-13 15:26:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:34,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:34,419 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 18 treesize of output 16 [2024-11-13 15:26:34,423 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 24 treesize of output 20 [2024-11-13 15:26:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:34,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766143720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:26:34,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:26:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-13 15:26:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245385410] [2024-11-13 15:26:34,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:34,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:26:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:26:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:26:34,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-13 15:26:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 286 transitions, 3173 flow. Second operand has 26 states, 26 states have (on average 33.11538461538461) internal successors, (861), 26 states have internal predecessors, (861), 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) [2024-11-13 15:26:34,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:26:34,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-13 15:26:34,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:26:49,481 INFO L124 PetriNetUnfolderBase]: 34565/62659 cut-off events. [2024-11-13 15:26:49,481 INFO L125 PetriNetUnfolderBase]: For 304447/308386 co-relation queries the response was YES. [2024-11-13 15:26:49,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250157 conditions, 62659 events. 34565/62659 cut-off events. For 304447/308386 co-relation queries the response was YES. Maximal size of possible extension queue 2133. Compared 605802 event pairs, 7471 based on Foata normal form. 2419/64989 useless extension candidates. Maximal degree in co-relation 250084. Up to 15145 conditions per place. [2024-11-13 15:26:50,098 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 825 selfloop transitions, 69 changer transitions 82/1015 dead transitions. [2024-11-13 15:26:50,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1015 transitions, 12592 flow [2024-11-13 15:26:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:26:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 15:26:50,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 897 transitions. [2024-11-13 15:26:50,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5215116279069767 [2024-11-13 15:26:50,100 INFO L175 Difference]: Start difference. First operand has 314 places, 286 transitions, 3173 flow. Second operand 20 states and 897 transitions. [2024-11-13 15:26:50,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1015 transitions, 12592 flow [2024-11-13 15:26:54,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 1015 transitions, 12555 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-11-13 15:26:54,862 INFO L231 Difference]: Finished difference. Result has 328 places, 292 transitions, 3355 flow [2024-11-13 15:26:54,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3355, PETRI_PLACES=328, PETRI_TRANSITIONS=292} [2024-11-13 15:26:54,862 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 249 predicate places. [2024-11-13 15:26:54,862 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 292 transitions, 3355 flow [2024-11-13 15:26:54,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 33.11538461538461) internal successors, (861), 26 states have internal predecessors, (861), 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) [2024-11-13 15:26:54,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:26:54,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:26:54,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:26:55,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:55,063 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-11-13 15:26:55,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:26:55,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1660169509, now seen corresponding path program 1 times [2024-11-13 15:26:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:26:55,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923008161] [2024-11-13 15:26:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:26:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:26:55,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:26:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923008161] [2024-11-13 15:26:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923008161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:26:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642936239] [2024-11-13 15:26:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:26:55,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:26:55,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:26:55,476 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:26:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cf12a51-8273-4014-8f35-7f3d7d1cdb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:26:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:26:55,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:26:55,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:26:55,669 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 19 treesize of output 1 [2024-11-13 15:26:55,778 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 19 treesize of output 7 [2024-11-13 15:26:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:55,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:26:55,964 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 16 treesize of output 14 [2024-11-13 15:26:55,967 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 20 treesize of output 16 [2024-11-13 15:26:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:26:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642936239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:26:55,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:26:55,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-13 15:26:55,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538531175] [2024-11-13 15:26:55,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:26:55,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 15:26:55,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:26:55,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 15:26:55,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:26:56,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-13 15:26:56,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 292 transitions, 3355 flow. Second operand has 27 states, 27 states have (on average 34.03703703703704) internal successors, (919), 27 states have internal predecessors, (919), 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) [2024-11-13 15:26:56,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:26:56,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-13 15:26:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand