./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC --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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:57:05,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:57:06,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 00:57:06,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:57:06,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:57:06,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:57:06,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:57:06,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:57:06,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:57:06,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:57:06,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:57:06,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:57:06,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:57:06,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:57:06,084 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:57:06,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:57:06,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:57:06,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:57:06,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 00:57:06,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:57:06,087 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:57:06,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:57:06,087 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:57:06,087 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:57:06,087 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:57:06,087 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:57:06,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:57:06,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:57:06,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:06,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:57:06,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:57:06,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:57:06,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:57:06,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:06,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:57:06,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:57:06,090 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_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC 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 -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-24 00:57:06,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:57:06,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:57:06,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:57:06,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:57:06,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:57:06,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-24 00:57:09,440 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/data/1c6438d28/f800c9db10c24c81900994b9e85729b9/FLAGb795b00ac [2024-11-24 00:57:09,744 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:57:09,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-24 00:57:09,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/data/1c6438d28/f800c9db10c24c81900994b9e85729b9/FLAGb795b00ac [2024-11-24 00:57:10,011 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/data/1c6438d28/f800c9db10c24c81900994b9e85729b9 [2024-11-24 00:57:10,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:57:10,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:57:10,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:57:10,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:57:10,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:57:10,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575b1633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10, skipping insertion in model container [2024-11-24 00:57:10,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:57:10,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:57:10,287 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:57:10,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:57:10,340 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:57:10,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10 WrapperNode [2024-11-24 00:57:10,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:57:10,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:57:10,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:57:10,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:57:10,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,383 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 113 [2024-11-24 00:57:10,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:57:10,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:57:10,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:57:10,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:57:10,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,433 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-24 00:57:10,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:57:10,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:57:10,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:57:10,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:57:10,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (1/1) ... [2024-11-24 00:57:10,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:10,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:57:10,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:57:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:57:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 00:57:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 00:57:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 00:57:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 00:57:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 00:57:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:57:10,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:57:10,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:57:10,531 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:57:10,650 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:57:10,652 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:57:11,036 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:57:11,036 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:57:11,302 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:57:11,302 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-24 00:57:11,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:57:11 BoogieIcfgContainer [2024-11-24 00:57:11,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:57:11,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:57:11,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:57:11,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:57:11,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:57:10" (1/3) ... [2024-11-24 00:57:11,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542191f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:57:11, skipping insertion in model container [2024-11-24 00:57:11,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:10" (2/3) ... [2024-11-24 00:57:11,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542191f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:57:11, skipping insertion in model container [2024-11-24 00:57:11,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:57:11" (3/3) ... [2024-11-24 00:57:11,311 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-24 00:57:11,326 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:57:11,328 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2024-11-24 00:57:11,328 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:57:11,397 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-24 00:57:11,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2024-11-24 00:57:11,486 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2024-11-24 00:57:11,489 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-24 00:57:11,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-24 00:57:11,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2024-11-24 00:57:11,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2024-11-24 00:57:11,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:57:11,535 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;@6f00ce9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:57:11,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-24 00:57:11,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:57:11,544 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 00:57:11,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 00:57:11,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:11,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 00:57:11,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:11,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash 490812, now seen corresponding path program 1 times [2024-11-24 00:57:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947632320] [2024-11-24 00:57:11,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947632320] [2024-11-24 00:57:11,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947632320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:11,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:11,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:57:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253032650] [2024-11-24 00:57:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:11,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:11,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:11,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:11,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:11,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:11,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:11,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:11,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:12,523 INFO L124 PetriNetUnfolderBase]: 815/1621 cut-off events. [2024-11-24 00:57:12,523 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-24 00:57:12,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 1621 events. 815/1621 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9666 event pairs, 608 based on Foata normal form. 2/1409 useless extension candidates. Maximal degree in co-relation 2619. Up to 1144 conditions per place. [2024-11-24 00:57:12,540 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-24 00:57:12,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2024-11-24 00:57:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-11-24 00:57:12,557 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-11-24 00:57:12,559 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2024-11-24 00:57:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2024-11-24 00:57:12,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-24 00:57:12,572 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2024-11-24 00:57:12,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-24 00:57:12,578 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-24 00:57:12,578 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2024-11-24 00:57:12,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:12,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:12,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 00:57:12,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:57:12,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:12,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1737387475, now seen corresponding path program 1 times [2024-11-24 00:57:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971229437] [2024-11-24 00:57:12,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:12,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971229437] [2024-11-24 00:57:12,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971229437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092474585] [2024-11-24 00:57:12,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:12,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:12,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:12,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:12,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:57:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:12,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:57:12,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:12,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:57:12,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092474585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:12,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:57:12,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 00:57:12,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404276020] [2024-11-24 00:57:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:12,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:57:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:12,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:57:12,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:57:12,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:12,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:12,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:12,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:12,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:13,418 INFO L124 PetriNetUnfolderBase]: 815/1619 cut-off events. [2024-11-24 00:57:13,418 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-24 00:57:13,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2848 conditions, 1619 events. 815/1619 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9646 event pairs, 608 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 2798. Up to 1134 conditions per place. [2024-11-24 00:57:13,433 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-24 00:57:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2024-11-24 00:57:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-24 00:57:13,439 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2024-11-24 00:57:13,439 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2024-11-24 00:57:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2024-11-24 00:57:13,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:57:13,443 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2024-11-24 00:57:13,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-24 00:57:13,445 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-24 00:57:13,446 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2024-11-24 00:57:13,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:13,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:13,447 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 00:57:13,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:13,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:13,652 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:13,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1975562610, now seen corresponding path program 1 times [2024-11-24 00:57:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639693640] [2024-11-24 00:57:13,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639693640] [2024-11-24 00:57:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639693640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868958003] [2024-11-24 00:57:13,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:13,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:13,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:13,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:57:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:13,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:57:13,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:13,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868958003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:14,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 00:57:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579040823] [2024-11-24 00:57:14,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:14,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:57:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:14,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:57:14,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:57:14,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:14,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:14,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:14,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:14,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:14,507 INFO L124 PetriNetUnfolderBase]: 821/1643 cut-off events. [2024-11-24 00:57:14,508 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-24 00:57:14,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1643 events. 821/1643 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9884 event pairs, 608 based on Foata normal form. 6/1437 useless extension candidates. Maximal degree in co-relation 2800. Up to 1145 conditions per place. [2024-11-24 00:57:14,522 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-11-24 00:57:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2024-11-24 00:57:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:57:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:57:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-11-24 00:57:14,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-24 00:57:14,525 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2024-11-24 00:57:14,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2024-11-24 00:57:14,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-24 00:57:14,529 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2024-11-24 00:57:14,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-11-24 00:57:14,530 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-11-24 00:57:14,530 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2024-11-24 00:57:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:14,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:14,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:14,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:57:14,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:14,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:14,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:14,737 INFO L85 PathProgramCache]: Analyzing trace with hash 249947632, now seen corresponding path program 1 times [2024-11-24 00:57:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:14,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150614650] [2024-11-24 00:57:14,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150614650] [2024-11-24 00:57:14,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150614650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308553162] [2024-11-24 00:57:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:14,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:14,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:14,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:14,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:14,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:14,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:14,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:15,403 INFO L124 PetriNetUnfolderBase]: 1614/2824 cut-off events. [2024-11-24 00:57:15,403 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-24 00:57:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2824 events. 1614/2824 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16643 event pairs, 858 based on Foata normal form. 62/2592 useless extension candidates. Maximal degree in co-relation 5229. Up to 1643 conditions per place. [2024-11-24 00:57:15,426 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-11-24 00:57:15,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2024-11-24 00:57:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-24 00:57:15,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-24 00:57:15,430 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2024-11-24 00:57:15,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2024-11-24 00:57:15,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-24 00:57:15,437 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2024-11-24 00:57:15,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-11-24 00:57:15,438 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-11-24 00:57:15,438 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2024-11-24 00:57:15,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:15,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:15,438 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:15,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:57:15,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:15,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -167376308, now seen corresponding path program 1 times [2024-11-24 00:57:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834661061] [2024-11-24 00:57:15,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:57:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834661061] [2024-11-24 00:57:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834661061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:57:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853188705] [2024-11-24 00:57:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:15,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:15,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:15,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:15,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-24 00:57:15,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-24 00:57:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:16,184 INFO L124 PetriNetUnfolderBase]: 2081/4122 cut-off events. [2024-11-24 00:57:16,184 INFO L125 PetriNetUnfolderBase]: For 932/932 co-relation queries the response was YES. [2024-11-24 00:57:16,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8247 conditions, 4122 events. 2081/4122 cut-off events. For 932/932 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28112 event pairs, 1466 based on Foata normal form. 62/3804 useless extension candidates. Maximal degree in co-relation 8152. Up to 2261 conditions per place. [2024-11-24 00:57:16,217 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 95 selfloop transitions, 13 changer transitions 0/129 dead transitions. [2024-11-24 00:57:16,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 129 transitions, 729 flow [2024-11-24 00:57:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:16,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-11-24 00:57:16,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6638418079096046 [2024-11-24 00:57:16,218 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 6 states and 235 transitions. [2024-11-24 00:57:16,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 129 transitions, 729 flow [2024-11-24 00:57:16,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:57:16,225 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 391 flow [2024-11-24 00:57:16,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-11-24 00:57:16,226 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-11-24 00:57:16,226 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 391 flow [2024-11-24 00:57:16,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:16,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:16,226 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:16,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:57:16,226 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:16,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -77788968, now seen corresponding path program 1 times [2024-11-24 00:57:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152141337] [2024-11-24 00:57:16,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152141337] [2024-11-24 00:57:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152141337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534645915] [2024-11-24 00:57:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:16,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:16,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:16,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:16,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-24 00:57:16,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:16,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:16,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-24 00:57:16,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:17,234 INFO L124 PetriNetUnfolderBase]: 4274/7806 cut-off events. [2024-11-24 00:57:17,234 INFO L125 PetriNetUnfolderBase]: For 3604/3790 co-relation queries the response was YES. [2024-11-24 00:57:17,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16833 conditions, 7806 events. 4274/7806 cut-off events. For 3604/3790 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 53900 event pairs, 2092 based on Foata normal form. 142/7577 useless extension candidates. Maximal degree in co-relation 16735. Up to 4103 conditions per place. [2024-11-24 00:57:17,313 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 103 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2024-11-24 00:57:17,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 126 transitions, 761 flow [2024-11-24 00:57:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-24 00:57:17,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2024-11-24 00:57:17,315 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 391 flow. Second operand 4 states and 164 transitions. [2024-11-24 00:57:17,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 126 transitions, 761 flow [2024-11-24 00:57:17,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 126 transitions, 749 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 00:57:17,325 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 408 flow [2024-11-24 00:57:17,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-11-24 00:57:17,326 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-11-24 00:57:17,326 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 408 flow [2024-11-24 00:57:17,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:17,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:17,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:17,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:57:17,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:17,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:17,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1517308565, now seen corresponding path program 1 times [2024-11-24 00:57:17,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518921133] [2024-11-24 00:57:17,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518921133] [2024-11-24 00:57:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518921133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:17,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:17,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289358088] [2024-11-24 00:57:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:17,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:17,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:17,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:17,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:17,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:17,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:17,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:17,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:18,328 INFO L124 PetriNetUnfolderBase]: 3549/6879 cut-off events. [2024-11-24 00:57:18,328 INFO L125 PetriNetUnfolderBase]: For 4115/4431 co-relation queries the response was YES. [2024-11-24 00:57:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15960 conditions, 6879 events. 3549/6879 cut-off events. For 4115/4431 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 48903 event pairs, 695 based on Foata normal form. 170/6871 useless extension candidates. Maximal degree in co-relation 15860. Up to 3503 conditions per place. [2024-11-24 00:57:18,382 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 97 selfloop transitions, 4 changer transitions 2/124 dead transitions. [2024-11-24 00:57:18,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 766 flow [2024-11-24 00:57:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-24 00:57:18,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-24 00:57:18,384 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 408 flow. Second operand 4 states and 162 transitions. [2024-11-24 00:57:18,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 766 flow [2024-11-24 00:57:18,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 761 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:57:18,391 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 430 flow [2024-11-24 00:57:18,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2024-11-24 00:57:18,394 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-11-24 00:57:18,394 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 430 flow [2024-11-24 00:57:18,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:18,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:18,394 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-24 00:57:18,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:57:18,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:18,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 87753477, now seen corresponding path program 2 times [2024-11-24 00:57:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:18,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924387780] [2024-11-24 00:57:18,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:18,422 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:18,422 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:57:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924387780] [2024-11-24 00:57:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924387780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764438509] [2024-11-24 00:57:18,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:18,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:18,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:57:18,576 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:18,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:18,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:57:18,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:57:18,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-24 00:57:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764438509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:18,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-24 00:57:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453743026] [2024-11-24 00:57:18,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:18,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:18,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:18,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:18,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:18,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:18,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:19,344 INFO L124 PetriNetUnfolderBase]: 2666/5173 cut-off events. [2024-11-24 00:57:19,345 INFO L125 PetriNetUnfolderBase]: For 3148/3389 co-relation queries the response was YES. [2024-11-24 00:57:19,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 5173 events. 2666/5173 cut-off events. For 3148/3389 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 34998 event pairs, 2011 based on Foata normal form. 102/5042 useless extension candidates. Maximal degree in co-relation 12397. Up to 3819 conditions per place. [2024-11-24 00:57:19,386 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 49 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-11-24 00:57:19,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 550 flow [2024-11-24 00:57:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-24 00:57:19,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2024-11-24 00:57:19,389 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 430 flow. Second operand 4 states and 124 transitions. [2024-11-24 00:57:19,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 550 flow [2024-11-24 00:57:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 00:57:19,400 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 452 flow [2024-11-24 00:57:19,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2024-11-24 00:57:19,403 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-11-24 00:57:19,403 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 452 flow [2024-11-24 00:57:19,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:19,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:19,404 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-24 00:57:19,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:57:19,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:19,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:19,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash 429404674, now seen corresponding path program 1 times [2024-11-24 00:57:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057019128] [2024-11-24 00:57:19,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:57:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:19,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057019128] [2024-11-24 00:57:19,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057019128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:19,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:19,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806026142] [2024-11-24 00:57:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:19,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:19,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:19,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:19,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2024-11-24 00:57:19,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:19,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:19,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2024-11-24 00:57:19,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:20,485 INFO L124 PetriNetUnfolderBase]: 2661/5153 cut-off events. [2024-11-24 00:57:20,486 INFO L125 PetriNetUnfolderBase]: For 3119/3376 co-relation queries the response was YES. [2024-11-24 00:57:20,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 5153 events. 2661/5153 cut-off events. For 3119/3376 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 34605 event pairs, 2011 based on Foata normal form. 110/5057 useless extension candidates. Maximal degree in co-relation 12369. Up to 3806 conditions per place. [2024-11-24 00:57:20,540 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 53 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-11-24 00:57:20,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 569 flow [2024-11-24 00:57:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-11-24 00:57:20,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2024-11-24 00:57:20,542 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 452 flow. Second operand 4 states and 146 transitions. [2024-11-24 00:57:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 569 flow [2024-11-24 00:57:20,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 00:57:20,554 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 428 flow [2024-11-24 00:57:20,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2024-11-24 00:57:20,555 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-11-24 00:57:20,555 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 428 flow [2024-11-24 00:57:20,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:20,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:20,555 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:20,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:57:20,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:20,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash 335474907, now seen corresponding path program 1 times [2024-11-24 00:57:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967617165] [2024-11-24 00:57:20,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:57:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967617165] [2024-11-24 00:57:20,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967617165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:20,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053278118] [2024-11-24 00:57:20,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:20,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:20,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:20,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:20,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:57:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:20,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:57:20,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:57:21,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:57:21,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053278118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:21,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:21,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-24 00:57:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432409767] [2024-11-24 00:57:21,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:21,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:57:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:21,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:57:21,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:57:21,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-24 00:57:21,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 428 flow. Second operand has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:21,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:21,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-24 00:57:21,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:23,544 INFO L124 PetriNetUnfolderBase]: 4956/8736 cut-off events. [2024-11-24 00:57:23,544 INFO L125 PetriNetUnfolderBase]: For 4787/5205 co-relation queries the response was YES. [2024-11-24 00:57:23,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21455 conditions, 8736 events. 4956/8736 cut-off events. For 4787/5205 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 58369 event pairs, 1128 based on Foata normal form. 378/8744 useless extension candidates. Maximal degree in co-relation 21354. Up to 1524 conditions per place. [2024-11-24 00:57:23,628 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 192 selfloop transitions, 46 changer transitions 0/258 dead transitions. [2024-11-24 00:57:23,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 258 transitions, 1498 flow [2024-11-24 00:57:23,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:57:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:57:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2024-11-24 00:57:23,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2024-11-24 00:57:23,631 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 428 flow. Second operand 17 states and 532 transitions. [2024-11-24 00:57:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 258 transitions, 1498 flow [2024-11-24 00:57:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 258 transitions, 1474 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:57:23,651 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 645 flow [2024-11-24 00:57:23,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=645, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-24 00:57:23,652 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2024-11-24 00:57:23,652 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 645 flow [2024-11-24 00:57:23,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:23,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:23,653 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:23,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:23,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:57:23,854 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:23,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1834561959, now seen corresponding path program 1 times [2024-11-24 00:57:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959248476] [2024-11-24 00:57:23,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 00:57:24,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959248476] [2024-11-24 00:57:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959248476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839562742] [2024-11-24 00:57:24,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:24,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:24,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:24,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:24,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:57:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:24,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:57:24,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 00:57:24,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 00:57:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839562742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:24,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-24 00:57:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590039772] [2024-11-24 00:57:24,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:57:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:24,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:57:24,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:57:24,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:24,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 645 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:25,673 INFO L124 PetriNetUnfolderBase]: 4371/8192 cut-off events. [2024-11-24 00:57:25,673 INFO L125 PetriNetUnfolderBase]: For 8983/9380 co-relation queries the response was YES. [2024-11-24 00:57:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21233 conditions, 8192 events. 4371/8192 cut-off events. For 8983/9380 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 57588 event pairs, 3459 based on Foata normal form. 136/7932 useless extension candidates. Maximal degree in co-relation 21142. Up to 3136 conditions per place. [2024-11-24 00:57:25,732 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 64 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2024-11-24 00:57:25,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 838 flow [2024-11-24 00:57:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:57:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 00:57:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 325 transitions. [2024-11-24 00:57:25,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5007704160246533 [2024-11-24 00:57:25,737 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 645 flow. Second operand 11 states and 325 transitions. [2024-11-24 00:57:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 838 flow [2024-11-24 00:57:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 743 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-24 00:57:25,759 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 553 flow [2024-11-24 00:57:25,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-11-24 00:57:25,760 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2024-11-24 00:57:25,761 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 553 flow [2024-11-24 00:57:25,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:25,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:25,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:25,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:57:25,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 00:57:25,962 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:25,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1950020146, now seen corresponding path program 1 times [2024-11-24 00:57:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:25,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519592377] [2024-11-24 00:57:25,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:26,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519592377] [2024-11-24 00:57:26,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519592377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:26,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:26,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:57:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313555045] [2024-11-24 00:57:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:26,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:26,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:26,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:26,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:26,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:26,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:26,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:26,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:27,282 INFO L124 PetriNetUnfolderBase]: 7494/13757 cut-off events. [2024-11-24 00:57:27,282 INFO L125 PetriNetUnfolderBase]: For 9410/10098 co-relation queries the response was YES. [2024-11-24 00:57:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34062 conditions, 13757 events. 7494/13757 cut-off events. For 9410/10098 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 105216 event pairs, 2583 based on Foata normal form. 484/14041 useless extension candidates. Maximal degree in co-relation 33977. Up to 6216 conditions per place. [2024-11-24 00:57:27,369 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 162 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2024-11-24 00:57:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 1323 flow [2024-11-24 00:57:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-11-24 00:57:27,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2024-11-24 00:57:27,370 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 553 flow. Second operand 6 states and 243 transitions. [2024-11-24 00:57:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 192 transitions, 1323 flow [2024-11-24 00:57:27,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1249 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-24 00:57:27,402 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 564 flow [2024-11-24 00:57:27,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2024-11-24 00:57:27,403 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-11-24 00:57:27,403 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 564 flow [2024-11-24 00:57:27,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:27,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:27,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:27,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:57:27,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:27,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 527056376, now seen corresponding path program 2 times [2024-11-24 00:57:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167229781] [2024-11-24 00:57:27,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:27,419 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:27,420 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167229781] [2024-11-24 00:57:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167229781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:57:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302767245] [2024-11-24 00:57:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:27,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:27,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:27,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:27,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:27,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:27,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:27,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:27,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:29,618 INFO L124 PetriNetUnfolderBase]: 10898/19725 cut-off events. [2024-11-24 00:57:29,619 INFO L125 PetriNetUnfolderBase]: For 22522/24088 co-relation queries the response was YES. [2024-11-24 00:57:29,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51883 conditions, 19725 events. 10898/19725 cut-off events. For 22522/24088 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 154426 event pairs, 4155 based on Foata normal form. 684/19767 useless extension candidates. Maximal degree in co-relation 51805. Up to 6748 conditions per place. [2024-11-24 00:57:29,737 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 165 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2024-11-24 00:57:29,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1343 flow [2024-11-24 00:57:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-11-24 00:57:29,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2024-11-24 00:57:29,739 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 564 flow. Second operand 6 states and 237 transitions. [2024-11-24 00:57:29,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1343 flow [2024-11-24 00:57:29,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 195 transitions, 1332 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-24 00:57:29,804 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 636 flow [2024-11-24 00:57:29,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2024-11-24 00:57:29,805 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2024-11-24 00:57:29,805 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 636 flow [2024-11-24 00:57:29,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:29,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:29,806 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:29,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:57:29,806 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:29,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash 192571552, now seen corresponding path program 3 times [2024-11-24 00:57:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:29,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994704679] [2024-11-24 00:57:29,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:57:29,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:29,819 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-24 00:57:29,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:29,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:29,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994704679] [2024-11-24 00:57:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994704679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:29,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:57:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708103679] [2024-11-24 00:57:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:29,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:29,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:29,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:29,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:29,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:29,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:29,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:29,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:32,231 INFO L124 PetriNetUnfolderBase]: 11388/20882 cut-off events. [2024-11-24 00:57:32,231 INFO L125 PetriNetUnfolderBase]: For 37773/39153 co-relation queries the response was YES. [2024-11-24 00:57:32,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57020 conditions, 20882 events. 11388/20882 cut-off events. For 37773/39153 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 162170 event pairs, 2425 based on Foata normal form. 364/20680 useless extension candidates. Maximal degree in co-relation 56938. Up to 8415 conditions per place. [2024-11-24 00:57:32,377 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 158 selfloop transitions, 18 changer transitions 1/196 dead transitions. [2024-11-24 00:57:32,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 1392 flow [2024-11-24 00:57:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-11-24 00:57:32,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-11-24 00:57:32,378 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 636 flow. Second operand 6 states and 241 transitions. [2024-11-24 00:57:32,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 1392 flow [2024-11-24 00:57:32,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1371 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-24 00:57:32,477 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 701 flow [2024-11-24 00:57:32,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-24 00:57:32,478 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-24 00:57:32,478 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 701 flow [2024-11-24 00:57:32,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:32,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:32,479 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:32,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:57:32,479 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:32,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:32,479 INFO L85 PathProgramCache]: Analyzing trace with hash -844203182, now seen corresponding path program 1 times [2024-11-24 00:57:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512145381] [2024-11-24 00:57:32,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:32,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:57:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:32,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512145381] [2024-11-24 00:57:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512145381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:32,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:32,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:57:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152963276] [2024-11-24 00:57:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:32,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:32,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:32,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:32,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-24 00:57:32,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:32,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:32,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-24 00:57:32,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:34,709 INFO L124 PetriNetUnfolderBase]: 9843/18126 cut-off events. [2024-11-24 00:57:34,710 INFO L125 PetriNetUnfolderBase]: For 31209/32327 co-relation queries the response was YES. [2024-11-24 00:57:34,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49436 conditions, 18126 events. 9843/18126 cut-off events. For 31209/32327 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 136984 event pairs, 8003 based on Foata normal form. 147/17698 useless extension candidates. Maximal degree in co-relation 49352. Up to 13658 conditions per place. [2024-11-24 00:57:34,823 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 69 selfloop transitions, 8 changer transitions 29/133 dead transitions. [2024-11-24 00:57:34,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 1053 flow [2024-11-24 00:57:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-24 00:57:34,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2024-11-24 00:57:34,825 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 701 flow. Second operand 6 states and 217 transitions. [2024-11-24 00:57:34,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 1053 flow [2024-11-24 00:57:34,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 997 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-24 00:57:34,889 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 646 flow [2024-11-24 00:57:34,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-11-24 00:57:34,890 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2024-11-24 00:57:34,890 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 646 flow [2024-11-24 00:57:34,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:34,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:34,890 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2024-11-24 00:57:34,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:57:34,891 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:34,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash 501890722, now seen corresponding path program 2 times [2024-11-24 00:57:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732120386] [2024-11-24 00:57:34,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:34,906 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:34,906 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:57:34,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:34,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732120386] [2024-11-24 00:57:34,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732120386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:34,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825335939] [2024-11-24 00:57:34,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:34,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:34,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:34,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:34,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:57:35,038 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:35,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:35,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:57:35,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:57:35,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-24 00:57:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825335939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:35,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-24 00:57:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689443192] [2024-11-24 00:57:35,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:35,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:35,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:35,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2024-11-24 00:57:35,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:35,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:35,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2024-11-24 00:57:35,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:36,780 INFO L124 PetriNetUnfolderBase]: 7918/14968 cut-off events. [2024-11-24 00:57:36,780 INFO L125 PetriNetUnfolderBase]: For 21240/22436 co-relation queries the response was YES. [2024-11-24 00:57:37,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40179 conditions, 14968 events. 7918/14968 cut-off events. For 21240/22436 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 115322 event pairs, 6420 based on Foata normal form. 107/14559 useless extension candidates. Maximal degree in co-relation 40098. Up to 11139 conditions per place. [2024-11-24 00:57:37,058 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 48 selfloop transitions, 28 changer transitions 0/103 dead transitions. [2024-11-24 00:57:37,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 788 flow [2024-11-24 00:57:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:57:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:57:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-24 00:57:37,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2024-11-24 00:57:37,059 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 646 flow. Second operand 5 states and 146 transitions. [2024-11-24 00:57:37,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 788 flow [2024-11-24 00:57:37,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 726 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-11-24 00:57:37,112 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 630 flow [2024-11-24 00:57:37,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-11-24 00:57:37,113 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-11-24 00:57:37,113 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 630 flow [2024-11-24 00:57:37,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:37,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:37,113 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:37,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:57:37,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:57:37,314 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:37,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 908028140, now seen corresponding path program 1 times [2024-11-24 00:57:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502297373] [2024-11-24 00:57:37,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502297373] [2024-11-24 00:57:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502297373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:37,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073111083] [2024-11-24 00:57:37,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:37,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:37,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:37,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:37,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:57:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:37,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:57:37,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:37,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073111083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:37,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:37,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-24 00:57:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113794037] [2024-11-24 00:57:37,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:37,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:57:37,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:37,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:57:37,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:57:37,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:37,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 630 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:37,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:37,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:37,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:40,094 INFO L124 PetriNetUnfolderBase]: 13153/22844 cut-off events. [2024-11-24 00:57:40,094 INFO L125 PetriNetUnfolderBase]: For 26040/27480 co-relation queries the response was YES. [2024-11-24 00:57:40,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60223 conditions, 22844 events. 13153/22844 cut-off events. For 26040/27480 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 170117 event pairs, 3886 based on Foata normal form. 994/23526 useless extension candidates. Maximal degree in co-relation 45575. Up to 7811 conditions per place. [2024-11-24 00:57:40,249 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 296 selfloop transitions, 18 changer transitions 0/340 dead transitions. [2024-11-24 00:57:40,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 340 transitions, 2716 flow [2024-11-24 00:57:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:57:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:57:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2024-11-24 00:57:40,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2024-11-24 00:57:40,406 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 630 flow. Second operand 10 states and 420 transitions. [2024-11-24 00:57:40,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 340 transitions, 2716 flow [2024-11-24 00:57:40,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 340 transitions, 2665 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:57:40,465 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 675 flow [2024-11-24 00:57:40,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-11-24 00:57:40,465 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2024-11-24 00:57:40,466 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 675 flow [2024-11-24 00:57:40,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:40,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:40,466 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:40,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:57:40,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:57:40,667 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:40,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1046781215, now seen corresponding path program 1 times [2024-11-24 00:57:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:40,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320617745] [2024-11-24 00:57:40,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:57:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320617745] [2024-11-24 00:57:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320617745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316847358] [2024-11-24 00:57:40,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:40,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:40,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:40,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:57:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:40,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 00:57:40,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:57:41,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:57:41,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316847358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:41,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:41,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-24 00:57:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010842993] [2024-11-24 00:57:41,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:41,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:57:41,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:41,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:57:41,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:57:41,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-24 00:57:41,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 675 flow. Second operand has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:41,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:41,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-24 00:57:41,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:45,302 INFO L124 PetriNetUnfolderBase]: 16370/26450 cut-off events. [2024-11-24 00:57:45,302 INFO L125 PetriNetUnfolderBase]: For 46316/46724 co-relation queries the response was YES. [2024-11-24 00:57:45,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78493 conditions, 26450 events. 16370/26450 cut-off events. For 46316/46724 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 180314 event pairs, 2903 based on Foata normal form. 481/26343 useless extension candidates. Maximal degree in co-relation 70045. Up to 9964 conditions per place. [2024-11-24 00:57:45,466 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 171 selfloop transitions, 35 changer transitions 65/293 dead transitions. [2024-11-24 00:57:45,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 2239 flow [2024-11-24 00:57:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:57:45,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-24 00:57:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-11-24 00:57:45,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2024-11-24 00:57:45,468 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 675 flow. Second operand 17 states and 483 transitions. [2024-11-24 00:57:45,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 2239 flow [2024-11-24 00:57:45,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 293 transitions, 2153 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-24 00:57:45,609 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 662 flow [2024-11-24 00:57:45,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=662, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2024-11-24 00:57:45,609 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2024-11-24 00:57:45,609 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 662 flow [2024-11-24 00:57:45,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:45,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:45,610 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:45,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:57:45,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:57:45,810 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:45,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash -952928078, now seen corresponding path program 1 times [2024-11-24 00:57:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:45,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618374893] [2024-11-24 00:57:45,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:45,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:45,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618374893] [2024-11-24 00:57:45,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618374893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:45,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754365650] [2024-11-24 00:57:45,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:45,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:45,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:45,933 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:45,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:57:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:46,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:57:46,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:46,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:57:46,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754365650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:46,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-24 00:57:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123341275] [2024-11-24 00:57:46,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:46,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:57:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:46,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:57:46,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:57:46,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-24 00:57:46,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:46,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:46,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-24 00:57:46,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:50,651 INFO L124 PetriNetUnfolderBase]: 22623/39138 cut-off events. [2024-11-24 00:57:50,651 INFO L125 PetriNetUnfolderBase]: For 63815/64597 co-relation queries the response was YES. [2024-11-24 00:57:50,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114782 conditions, 39138 events. 22623/39138 cut-off events. For 63815/64597 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 304809 event pairs, 4945 based on Foata normal form. 1134/39742 useless extension candidates. Maximal degree in co-relation 114666. Up to 11393 conditions per place. [2024-11-24 00:57:50,931 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 284 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-11-24 00:57:50,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 326 transitions, 2418 flow [2024-11-24 00:57:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:57:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 00:57:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2024-11-24 00:57:50,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2024-11-24 00:57:50,933 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 662 flow. Second operand 10 states and 401 transitions. [2024-11-24 00:57:50,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 326 transitions, 2418 flow [2024-11-24 00:57:51,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 326 transitions, 2349 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-11-24 00:57:51,051 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 703 flow [2024-11-24 00:57:51,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=703, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-11-24 00:57:51,052 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-11-24 00:57:51,052 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 703 flow [2024-11-24 00:57:51,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:51,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:51,053 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-11-24 00:57:51,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:57:51,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:51,253 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:51,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1907477338, now seen corresponding path program 1 times [2024-11-24 00:57:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885842720] [2024-11-24 00:57:51,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:51,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 00:57:51,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:51,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885842720] [2024-11-24 00:57:51,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885842720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:51,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:51,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:51,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147949113] [2024-11-24 00:57:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:51,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:51,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:51,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:51,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:51,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-24 00:57:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:51,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:51,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-24 00:57:51,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:55,435 INFO L124 PetriNetUnfolderBase]: 20249/34732 cut-off events. [2024-11-24 00:57:55,435 INFO L125 PetriNetUnfolderBase]: For 64415/65214 co-relation queries the response was YES. [2024-11-24 00:57:55,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103963 conditions, 34732 events. 20249/34732 cut-off events. For 64415/65214 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 264365 event pairs, 8985 based on Foata normal form. 868/34765 useless extension candidates. Maximal degree in co-relation 103809. Up to 15019 conditions per place. [2024-11-24 00:57:55,673 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 138 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2024-11-24 00:57:55,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 172 transitions, 1341 flow [2024-11-24 00:57:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:57:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 00:57:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-24 00:57:55,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2024-11-24 00:57:55,674 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 703 flow. Second operand 4 states and 163 transitions. [2024-11-24 00:57:55,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 172 transitions, 1341 flow [2024-11-24 00:57:55,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1312 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-24 00:57:55,800 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 716 flow [2024-11-24 00:57:55,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=716, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2024-11-24 00:57:55,801 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2024-11-24 00:57:55,801 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 716 flow [2024-11-24 00:57:55,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:55,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:55,801 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:55,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:57:55,801 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:57:55,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -60945528, now seen corresponding path program 2 times [2024-11-24 00:57:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:55,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243017371] [2024-11-24 00:57:55,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:55,813 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:55,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-24 00:57:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243017371] [2024-11-24 00:57:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243017371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930064699] [2024-11-24 00:57:55,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:55,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:55,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:55,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:55,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:57:55,943 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:57:55,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:55,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:57:55,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-24 00:57:56,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-24 00:57:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930064699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:56,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:56,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-24 00:57:56,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386649739] [2024-11-24 00:57:56,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:56,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:56,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:56,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2024-11-24 00:57:56,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:57:56,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:56,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2024-11-24 00:57:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:58:00,647 INFO L124 PetriNetUnfolderBase]: 22587/39810 cut-off events. [2024-11-24 00:58:00,647 INFO L125 PetriNetUnfolderBase]: For 78809/79540 co-relation queries the response was YES. [2024-11-24 00:58:00,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116709 conditions, 39810 events. 22587/39810 cut-off events. For 78809/79540 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 314886 event pairs, 6106 based on Foata normal form. 410/39763 useless extension candidates. Maximal degree in co-relation 116552. Up to 13473 conditions per place. [2024-11-24 00:58:00,987 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 137 selfloop transitions, 14 changer transitions 3/181 dead transitions. [2024-11-24 00:58:00,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 181 transitions, 1536 flow [2024-11-24 00:58:00,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:58:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:58:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-11-24 00:58:00,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6237288135593221 [2024-11-24 00:58:00,988 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 716 flow. Second operand 5 states and 184 transitions. [2024-11-24 00:58:00,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 181 transitions, 1536 flow [2024-11-24 00:58:01,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1508 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-24 00:58:01,132 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 722 flow [2024-11-24 00:58:01,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-11-24 00:58:01,133 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2024-11-24 00:58:01,133 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 722 flow [2024-11-24 00:58:01,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:01,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:58:01,133 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:58:01,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:58:01,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:01,334 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:58:01,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:58:01,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1876008279, now seen corresponding path program 1 times [2024-11-24 00:58:01,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:58:01,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832492045] [2024-11-24 00:58:01,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:01,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:58:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 00:58:01,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:58:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832492045] [2024-11-24 00:58:01,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832492045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:58:01,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794093022] [2024-11-24 00:58:01,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:01,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:01,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:58:01,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:58:01,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:58:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:01,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:58:01,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:58:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:58:01,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:58:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:58:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794093022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:58:01,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:58:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-24 00:58:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817373083] [2024-11-24 00:58:01,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:58:01,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:58:01,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:58:01,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:58:01,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:58:02,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-11-24 00:58:02,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 722 flow. Second operand has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:02,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:58:02,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-11-24 00:58:02,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:58:12,608 INFO L124 PetriNetUnfolderBase]: 56371/87642 cut-off events. [2024-11-24 00:58:12,608 INFO L125 PetriNetUnfolderBase]: For 252559/253700 co-relation queries the response was YES. [2024-11-24 00:58:12,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274948 conditions, 87642 events. 56371/87642 cut-off events. For 252559/253700 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 653520 event pairs, 4393 based on Foata normal form. 3012/90640 useless extension candidates. Maximal degree in co-relation 274793. Up to 13048 conditions per place. [2024-11-24 00:58:13,350 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 731 selfloop transitions, 62 changer transitions 24/828 dead transitions. [2024-11-24 00:58:13,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 828 transitions, 6888 flow [2024-11-24 00:58:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 00:58:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-24 00:58:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 943 transitions. [2024-11-24 00:58:13,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5708232445520581 [2024-11-24 00:58:13,353 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 722 flow. Second operand 28 states and 943 transitions. [2024-11-24 00:58:13,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 828 transitions, 6888 flow [2024-11-24 00:58:13,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 828 transitions, 6427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:58:13,931 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1274 flow [2024-11-24 00:58:13,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1274, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2024-11-24 00:58:13,931 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 104 predicate places. [2024-11-24 00:58:13,931 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1274 flow [2024-11-24 00:58:13,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:13,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:58:13,932 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:58:13,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:58:14,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:14,132 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-24 00:58:14,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:58:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2097186115, now seen corresponding path program 1 times [2024-11-24 00:58:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:58:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776655799] [2024-11-24 00:58:14,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:58:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:58:14,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:58:14,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776655799] [2024-11-24 00:58:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776655799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:58:14,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602034908] [2024-11-24 00:58:14,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:58:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:58:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:58:14,256 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:58:14,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adfea5c-5cf6-4457-b4cd-4019d2360c20/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:58:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:58:14,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:58:14,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:58:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:58:14,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:58:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602034908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:58:14,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:58:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2024-11-24 00:58:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047375811] [2024-11-24 00:58:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:58:14,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:58:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:58:14,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:58:14,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:58:14,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-11-24 00:58:14,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1274 flow. Second operand has 9 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:58:14,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:58:14,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-11-24 00:58:14,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand