./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-figure1.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_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/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_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/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_12d07b64-60fa-402b-bec4-1409be6d48f4/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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:40:19,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:40:19,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 18:40:19,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:40:19,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:40:19,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:40:19,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:40:19,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:40:19,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:40:19,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:40:19,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:40:19,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:40:19,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:40:19,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:40:19,842 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:40:19,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:40:19,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:40:19,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:40:19,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:40:19,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:40:19,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:40:19,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:40:19,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:40:19,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:40:19,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:40:19,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:40:19,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:40:19,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:40:19,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:40:19,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:40:19,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:40:19,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:40:19,848 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_12d07b64-60fa-402b-bec4-1409be6d48f4/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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-23 18:40:20,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:40:20,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:40:20,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:40:20,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:40:20,258 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:40:20,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-23 18:40:24,066 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/data/4ae8dbe8a/578730bcc8474828acdf1783ff5000fa/FLAG693339089 [2024-11-23 18:40:24,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:40:24,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-23 18:40:24,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/data/4ae8dbe8a/578730bcc8474828acdf1783ff5000fa/FLAG693339089 [2024-11-23 18:40:24,655 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/data/4ae8dbe8a/578730bcc8474828acdf1783ff5000fa [2024-11-23 18:40:24,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:40:24,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:40:24,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:40:24,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:40:24,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:40:24,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:24" (1/1) ... [2024-11-23 18:40:24,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eee59d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:24, skipping insertion in model container [2024-11-23 18:40:24,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:24" (1/1) ... [2024-11-23 18:40:24,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:40:25,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:40:25,085 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:40:25,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:40:25,146 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:40:25,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25 WrapperNode [2024-11-23 18:40:25,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:40:25,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:40:25,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:40:25,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:40:25,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,219 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2024-11-23 18:40:25,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:40:25,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:40:25,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:40:25,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:40:25,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,272 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 18:40:25,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,280 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:40:25,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:40:25,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:40:25,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:40:25,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (1/1) ... [2024-11-23 18:40:25,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:40:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:25,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:40:25,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:40:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:40:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 18:40:25,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 18:40:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 18:40:25,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 18:40:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:40:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:40:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:40:25,389 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 18:40:25,503 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:40:25,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:40:25,734 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 18:40:25,734 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:40:25,951 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:40:25,951 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:40:25,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:40:25 BoogieIcfgContainer [2024-11-23 18:40:25,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:40:25,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:40:25,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:40:25,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:40:25,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:40:24" (1/3) ... [2024-11-23 18:40:25,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170ba202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:40:25, skipping insertion in model container [2024-11-23 18:40:25,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:25" (2/3) ... [2024-11-23 18:40:25,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170ba202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:40:25, skipping insertion in model container [2024-11-23 18:40:25,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:40:25" (3/3) ... [2024-11-23 18:40:25,965 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-23 18:40:25,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:40:25,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2024-11-23 18:40:25,988 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 18:40:26,057 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 18:40:26,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-23 18:40:26,162 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-23 18:40:26,168 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 18:40:26,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-23 18:40:26,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-23 18:40:26,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-11-23 18:40:26,193 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:40:26,214 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;@c7c951c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:40:26,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-23 18:40:26,222 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 18:40:26,222 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-23 18:40:26,223 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 18:40:26,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:26,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-23 18:40:26,224 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:26,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash 241506726, now seen corresponding path program 1 times [2024-11-23 18:40:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307933705] [2024-11-23 18:40:26,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:26,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:26,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307933705] [2024-11-23 18:40:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307933705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:26,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:26,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 18:40:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951624772] [2024-11-23 18:40:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:26,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:40:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:26,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:40:26,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:40:26,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:26,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:26,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:26,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:26,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:26,951 INFO L124 PetriNetUnfolderBase]: 194/408 cut-off events. [2024-11-23 18:40:26,953 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-23 18:40:26,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 408 events. 194/408 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1825 event pairs, 77 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 718. Up to 289 conditions per place. [2024-11-23 18:40:26,967 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 25 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2024-11-23 18:40:26,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 145 flow [2024-11-23 18:40:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:40:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:40:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-23 18:40:26,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-11-23 18:40:26,992 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 59 transitions. [2024-11-23 18:40:26,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 145 flow [2024-11-23 18:40:27,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 137 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:40:27,005 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 76 flow [2024-11-23 18:40:27,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-23 18:40:27,017 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-11-23 18:40:27,017 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 76 flow [2024-11-23 18:40:27,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:27,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:27,018 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:27,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:40:27,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:27,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash 159739209, now seen corresponding path program 1 times [2024-11-23 18:40:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691125210] [2024-11-23 18:40:27,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:27,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:27,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691125210] [2024-11-23 18:40:27,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691125210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:27,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:27,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:40:27,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886554972] [2024-11-23 18:40:27,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:27,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:40:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:27,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:40:27,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:40:27,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:27,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:27,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:27,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:27,458 INFO L124 PetriNetUnfolderBase]: 298/571 cut-off events. [2024-11-23 18:40:27,458 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-23 18:40:27,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 571 events. 298/571 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2647 event pairs, 127 based on Foata normal form. 18/490 useless extension candidates. Maximal degree in co-relation 733. Up to 420 conditions per place. [2024-11-23 18:40:27,465 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 45 selfloop transitions, 3 changer transitions 1/54 dead transitions. [2024-11-23 18:40:27,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 232 flow [2024-11-23 18:40:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:40:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:40:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-23 18:40:27,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-23 18:40:27,468 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 79 transitions. [2024-11-23 18:40:27,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 232 flow [2024-11-23 18:40:27,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:40:27,471 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 98 flow [2024-11-23 18:40:27,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-11-23 18:40:27,472 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-11-23 18:40:27,472 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 98 flow [2024-11-23 18:40:27,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:27,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:27,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:27,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:40:27,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:27,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1627693328, now seen corresponding path program 1 times [2024-11-23 18:40:27,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:27,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886501269] [2024-11-23 18:40:27,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:27,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:27,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886501269] [2024-11-23 18:40:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886501269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:27,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:40:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051512154] [2024-11-23 18:40:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:27,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:40:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:27,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:40:27,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:40:27,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:27,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:27,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:27,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:27,888 INFO L124 PetriNetUnfolderBase]: 210/466 cut-off events. [2024-11-23 18:40:27,889 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-23 18:40:27,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 466 events. 210/466 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2277 event pairs, 122 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 863. Up to 262 conditions per place. [2024-11-23 18:40:27,894 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-23 18:40:27,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 228 flow [2024-11-23 18:40:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:40:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:40:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-23 18:40:27,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-23 18:40:27,896 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 98 flow. Second operand 3 states and 63 transitions. [2024-11-23 18:40:27,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 228 flow [2024-11-23 18:40:27,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:40:27,899 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 120 flow [2024-11-23 18:40:27,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-11-23 18:40:27,901 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-11-23 18:40:27,901 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 120 flow [2024-11-23 18:40:27,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:27,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:27,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:40:27,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -846454247, now seen corresponding path program 1 times [2024-11-23 18:40:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879058695] [2024-11-23 18:40:27,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:28,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879058695] [2024-11-23 18:40:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879058695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:28,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:28,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:40:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14048068] [2024-11-23 18:40:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:28,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:40:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:28,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:40:28,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:40:28,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:28,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:28,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:28,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:28,313 INFO L124 PetriNetUnfolderBase]: 261/559 cut-off events. [2024-11-23 18:40:28,313 INFO L125 PetriNetUnfolderBase]: For 468/470 co-relation queries the response was YES. [2024-11-23 18:40:28,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 559 events. 261/559 cut-off events. For 468/470 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2549 event pairs, 45 based on Foata normal form. 25/571 useless extension candidates. Maximal degree in co-relation 1203. Up to 236 conditions per place. [2024-11-23 18:40:28,321 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-23 18:40:28,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 265 flow [2024-11-23 18:40:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:40:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:40:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-23 18:40:28,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-23 18:40:28,327 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 120 flow. Second operand 4 states and 79 transitions. [2024-11-23 18:40:28,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 265 flow [2024-11-23 18:40:28,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 18:40:28,336 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 148 flow [2024-11-23 18:40:28,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-23 18:40:28,339 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-11-23 18:40:28,340 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 148 flow [2024-11-23 18:40:28,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:28,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:28,340 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:28,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:40:28,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:28,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash -32719831, now seen corresponding path program 1 times [2024-11-23 18:40:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211280613] [2024-11-23 18:40:28,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:28,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211280613] [2024-11-23 18:40:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211280613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485954616] [2024-11-23 18:40:28,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:28,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:28,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:28,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:28,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:40:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:28,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:40:28,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:28,570 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:40:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485954616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:40:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-23 18:40:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892644860] [2024-11-23 18:40:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:28,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:40:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:28,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:40:28,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:40:28,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:28,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:28,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:28,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:28,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:28,752 INFO L124 PetriNetUnfolderBase]: 231/515 cut-off events. [2024-11-23 18:40:28,753 INFO L125 PetriNetUnfolderBase]: For 607/609 co-relation queries the response was YES. [2024-11-23 18:40:28,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 515 events. 231/515 cut-off events. For 607/609 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2388 event pairs, 191 based on Foata normal form. 24/524 useless extension candidates. Maximal degree in co-relation 1057. Up to 405 conditions per place. [2024-11-23 18:40:28,758 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 24 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-23 18:40:28,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 180 flow [2024-11-23 18:40:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:40:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 18:40:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-11-23 18:40:28,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-23 18:40:28,766 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 148 flow. Second operand 3 states and 47 transitions. [2024-11-23 18:40:28,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 180 flow [2024-11-23 18:40:28,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:40:28,772 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 126 flow [2024-11-23 18:40:28,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-23 18:40:28,773 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-23 18:40:28,773 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 126 flow [2024-11-23 18:40:28,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:28,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:28,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:28,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:40:28,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:28,975 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:28,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1693703525, now seen corresponding path program 1 times [2024-11-23 18:40:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036159575] [2024-11-23 18:40:28,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:29,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:29,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036159575] [2024-11-23 18:40:29,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036159575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:29,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:29,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:40:29,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203419138] [2024-11-23 18:40:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:29,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:40:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:29,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:40:29,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:40:29,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:29,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:29,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:29,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:29,400 INFO L124 PetriNetUnfolderBase]: 445/852 cut-off events. [2024-11-23 18:40:29,400 INFO L125 PetriNetUnfolderBase]: For 593/629 co-relation queries the response was YES. [2024-11-23 18:40:29,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 852 events. 445/852 cut-off events. For 593/629 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3926 event pairs, 239 based on Foata normal form. 22/851 useless extension candidates. Maximal degree in co-relation 2213. Up to 522 conditions per place. [2024-11-23 18:40:29,412 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 53 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-23 18:40:29,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 378 flow [2024-11-23 18:40:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:40:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 18:40:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-11-23 18:40:29,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-23 18:40:29,418 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 126 flow. Second operand 4 states and 72 transitions. [2024-11-23 18:40:29,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 378 flow [2024-11-23 18:40:29,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:40:29,425 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 154 flow [2024-11-23 18:40:29,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-23 18:40:29,426 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-11-23 18:40:29,426 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 154 flow [2024-11-23 18:40:29,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:29,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:29,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:29,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:40:29,427 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:29,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1378977012, now seen corresponding path program 1 times [2024-11-23 18:40:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:29,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482911635] [2024-11-23 18:40:29,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:29,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:29,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482911635] [2024-11-23 18:40:29,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482911635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:29,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791413903] [2024-11-23 18:40:29,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:29,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:29,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:29,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:29,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:40:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:29,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:40:29,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:29,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:40:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791413903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:29,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:40:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 18:40:29,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787204162] [2024-11-23 18:40:29,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:29,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:40:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:29,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:40:29,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:40:29,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:29,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:29,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:29,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:29,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:30,088 INFO L124 PetriNetUnfolderBase]: 425/834 cut-off events. [2024-11-23 18:40:30,088 INFO L125 PetriNetUnfolderBase]: For 811/847 co-relation queries the response was YES. [2024-11-23 18:40:30,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 834 events. 425/834 cut-off events. For 811/847 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3816 event pairs, 48 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 2383. Up to 294 conditions per place. [2024-11-23 18:40:30,096 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 72 selfloop transitions, 6 changer transitions 1/84 dead transitions. [2024-11-23 18:40:30,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 520 flow [2024-11-23 18:40:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:40:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 18:40:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-11-23 18:40:30,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-23 18:40:30,098 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 154 flow. Second operand 6 states and 104 transitions. [2024-11-23 18:40:30,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 84 transitions, 520 flow [2024-11-23 18:40:30,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 84 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 18:40:30,104 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 159 flow [2024-11-23 18:40:30,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-23 18:40:30,108 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2024-11-23 18:40:30,108 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 159 flow [2024-11-23 18:40:30,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:30,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:30,109 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-23 18:40:30,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:40:30,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 18:40:30,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:30,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash 201385859, now seen corresponding path program 1 times [2024-11-23 18:40:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383489698] [2024-11-23 18:40:30,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383489698] [2024-11-23 18:40:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383489698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853529544] [2024-11-23 18:40:30,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:30,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:40:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:30,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:40:30,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:30,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853529544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:30,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 18:40:30,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435506240] [2024-11-23 18:40:30,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:30,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 18:40:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:30,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 18:40:30,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:40:30,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:30,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 159 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:30,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:30,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:30,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:31,460 INFO L124 PetriNetUnfolderBase]: 889/1728 cut-off events. [2024-11-23 18:40:31,460 INFO L125 PetriNetUnfolderBase]: For 2206/2282 co-relation queries the response was YES. [2024-11-23 18:40:31,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 1728 events. 889/1728 cut-off events. For 2206/2282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8556 event pairs, 136 based on Foata normal form. 78/1804 useless extension candidates. Maximal degree in co-relation 5183. Up to 606 conditions per place. [2024-11-23 18:40:31,479 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 136 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-11-23 18:40:31,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 153 transitions, 973 flow [2024-11-23 18:40:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:40:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 18:40:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-11-23 18:40:31,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-23 18:40:31,483 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 159 flow. Second operand 10 states and 188 transitions. [2024-11-23 18:40:31,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 153 transitions, 973 flow [2024-11-23 18:40:31,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 153 transitions, 946 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-23 18:40:31,493 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 228 flow [2024-11-23 18:40:31,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-23 18:40:31,494 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-23 18:40:31,494 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 228 flow [2024-11-23 18:40:31,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:31,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:31,495 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:31,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:40:31,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 18:40:31,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:31,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2031307416, now seen corresponding path program 1 times [2024-11-23 18:40:31,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:31,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206512756] [2024-11-23 18:40:31,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:31,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:31,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206512756] [2024-11-23 18:40:31,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206512756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089828434] [2024-11-23 18:40:31,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:31,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:31,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:31,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:40:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:31,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:40:31,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:31,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089828434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:32,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-23 18:40:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515423551] [2024-11-23 18:40:32,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:32,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:40:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:32,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:40:32,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:40:32,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:32,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:32,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:32,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:32,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:32,485 INFO L124 PetriNetUnfolderBase]: 1125/2245 cut-off events. [2024-11-23 18:40:32,485 INFO L125 PetriNetUnfolderBase]: For 4045/4141 co-relation queries the response was YES. [2024-11-23 18:40:32,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2245 events. 1125/2245 cut-off events. For 4045/4141 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11840 event pairs, 74 based on Foata normal form. 185/2429 useless extension candidates. Maximal degree in co-relation 6910. Up to 741 conditions per place. [2024-11-23 18:40:32,508 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 82 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-23 18:40:32,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 663 flow [2024-11-23 18:40:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:40:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 18:40:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-23 18:40:32,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-11-23 18:40:32,511 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 228 flow. Second operand 6 states and 111 transitions. [2024-11-23 18:40:32,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 663 flow [2024-11-23 18:40:32,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 643 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-23 18:40:32,530 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 262 flow [2024-11-23 18:40:32,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-11-23 18:40:32,532 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-11-23 18:40:32,534 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 262 flow [2024-11-23 18:40:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:32,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:32,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:32,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:40:32,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:32,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:32,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1607143213, now seen corresponding path program 1 times [2024-11-23 18:40:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917243767] [2024-11-23 18:40:32,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917243767] [2024-11-23 18:40:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917243767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:40:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346998764] [2024-11-23 18:40:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:32,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:40:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:32,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:40:32,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:40:32,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:32,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:32,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:32,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:32,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:33,464 INFO L124 PetriNetUnfolderBase]: 1357/2841 cut-off events. [2024-11-23 18:40:33,465 INFO L125 PetriNetUnfolderBase]: For 5571/5643 co-relation queries the response was YES. [2024-11-23 18:40:33,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 2841 events. 1357/2841 cut-off events. For 5571/5643 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16240 event pairs, 254 based on Foata normal form. 34/2874 useless extension candidates. Maximal degree in co-relation 9054. Up to 1501 conditions per place. [2024-11-23 18:40:33,492 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 83 selfloop transitions, 8 changer transitions 2/99 dead transitions. [2024-11-23 18:40:33,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 739 flow [2024-11-23 18:40:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:40:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 18:40:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-23 18:40:33,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-11-23 18:40:33,493 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 262 flow. Second operand 5 states and 93 transitions. [2024-11-23 18:40:33,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 739 flow [2024-11-23 18:40:33,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 732 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 18:40:33,514 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 330 flow [2024-11-23 18:40:33,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-11-23 18:40:33,515 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2024-11-23 18:40:33,516 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 330 flow [2024-11-23 18:40:33,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:33,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:33,517 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-23 18:40:33,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:40:33,518 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:33,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash -999174582, now seen corresponding path program 1 times [2024-11-23 18:40:33,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:33,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498961019] [2024-11-23 18:40:33,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:33,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:33,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:33,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498961019] [2024-11-23 18:40:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498961019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:33,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368145257] [2024-11-23 18:40:33,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:33,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:33,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:33,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:40:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:33,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 18:40:33,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:33,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:33,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:33,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368145257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:33,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:33,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-23 18:40:33,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941820724] [2024-11-23 18:40:33,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:33,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 18:40:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:33,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 18:40:33,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:40:33,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:33,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 330 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:33,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:33,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:33,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:35,120 INFO L124 PetriNetUnfolderBase]: 2544/5338 cut-off events. [2024-11-23 18:40:35,121 INFO L125 PetriNetUnfolderBase]: For 14321/14537 co-relation queries the response was YES. [2024-11-23 18:40:35,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17673 conditions, 5338 events. 2544/5338 cut-off events. For 14321/14537 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 35835 event pairs, 92 based on Foata normal form. 212/5549 useless extension candidates. Maximal degree in co-relation 17651. Up to 1165 conditions per place. [2024-11-23 18:40:35,188 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 178 selfloop transitions, 28 changer transitions 0/212 dead transitions. [2024-11-23 18:40:35,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 212 transitions, 1593 flow [2024-11-23 18:40:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 18:40:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 18:40:35,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-11-23 18:40:35,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6789772727272727 [2024-11-23 18:40:35,191 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 330 flow. Second operand 11 states and 239 transitions. [2024-11-23 18:40:35,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 212 transitions, 1593 flow [2024-11-23 18:40:35,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 212 transitions, 1584 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 18:40:35,229 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 618 flow [2024-11-23 18:40:35,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=618, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-11-23 18:40:35,232 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2024-11-23 18:40:35,233 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 618 flow [2024-11-23 18:40:35,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:35,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:35,234 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:35,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:40:35,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:35,435 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:35,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:35,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1061555170, now seen corresponding path program 1 times [2024-11-23 18:40:35,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:35,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755321505] [2024-11-23 18:40:35,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:35,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755321505] [2024-11-23 18:40:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755321505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:35,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385239651] [2024-11-23 18:40:35,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:35,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:35,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:40:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:35,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:40:35,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:35,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:40:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385239651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:35,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:40:35,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 18:40:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085724659] [2024-11-23 18:40:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:35,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:40:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:35,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:40:35,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:40:35,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:35,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:35,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:35,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:37,071 INFO L124 PetriNetUnfolderBase]: 2902/5732 cut-off events. [2024-11-23 18:40:37,071 INFO L125 PetriNetUnfolderBase]: For 19543/19601 co-relation queries the response was YES. [2024-11-23 18:40:37,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20758 conditions, 5732 events. 2902/5732 cut-off events. For 19543/19601 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 37247 event pairs, 499 based on Foata normal form. 233/5731 useless extension candidates. Maximal degree in co-relation 20728. Up to 1789 conditions per place. [2024-11-23 18:40:37,239 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 183 selfloop transitions, 7 changer transitions 0/194 dead transitions. [2024-11-23 18:40:37,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 194 transitions, 2278 flow [2024-11-23 18:40:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 18:40:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 18:40:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-23 18:40:37,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-23 18:40:37,243 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 618 flow. Second operand 6 states and 96 transitions. [2024-11-23 18:40:37,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 194 transitions, 2278 flow [2024-11-23 18:40:37,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 194 transitions, 2093 flow, removed 91 selfloop flow, removed 1 redundant places. [2024-11-23 18:40:37,300 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 572 flow [2024-11-23 18:40:37,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-11-23 18:40:37,302 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2024-11-23 18:40:37,304 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 572 flow [2024-11-23 18:40:37,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:37,305 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:37,305 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:37,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 18:40:37,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 18:40:37,506 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:37,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1734622146, now seen corresponding path program 1 times [2024-11-23 18:40:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:37,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836270195] [2024-11-23 18:40:37,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:37,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:37,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836270195] [2024-11-23 18:40:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836270195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349772456] [2024-11-23 18:40:37,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:37,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:37,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:37,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:37,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:40:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:37,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 18:40:37,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:37,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349772456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:37,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:37,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 18:40:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223198891] [2024-11-23 18:40:37,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:37,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 18:40:37,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:37,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 18:40:37,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 18:40:37,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:37,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:37,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:37,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:37,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:39,580 INFO L124 PetriNetUnfolderBase]: 4592/8805 cut-off events. [2024-11-23 18:40:39,581 INFO L125 PetriNetUnfolderBase]: For 28359/28545 co-relation queries the response was YES. [2024-11-23 18:40:39,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32968 conditions, 8805 events. 4592/8805 cut-off events. For 28359/28545 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 58000 event pairs, 1086 based on Foata normal form. 420/9224 useless extension candidates. Maximal degree in co-relation 32938. Up to 3118 conditions per place. [2024-11-23 18:40:39,663 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 315 selfloop transitions, 13 changer transitions 14/346 dead transitions. [2024-11-23 18:40:39,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 346 transitions, 3883 flow [2024-11-23 18:40:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 18:40:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 18:40:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-23 18:40:39,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-11-23 18:40:39,666 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 572 flow. Second operand 10 states and 169 transitions. [2024-11-23 18:40:39,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 346 transitions, 3883 flow [2024-11-23 18:40:39,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 346 transitions, 3853 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-23 18:40:39,847 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 630 flow [2024-11-23 18:40:39,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=630, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-11-23 18:40:39,848 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2024-11-23 18:40:39,849 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 630 flow [2024-11-23 18:40:39,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 12 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:39,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:39,850 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-23 18:40:39,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 18:40:40,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 18:40:40,052 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:40,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:40,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2074888486, now seen corresponding path program 2 times [2024-11-23 18:40:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:40,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013957650] [2024-11-23 18:40:40,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:40,075 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:40:40,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 18:40:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013957650] [2024-11-23 18:40:40,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013957650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432737382] [2024-11-23 18:40:40,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:40,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:40,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:40,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:40:40,216 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:40:40,216 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:40,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:40:40,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 18:40:40,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-23 18:40:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432737382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:40,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-23 18:40:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892389959] [2024-11-23 18:40:40,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:40,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:40:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:40,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:40:40,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:40:40,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-11-23 18:40:40,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 630 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:40,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:40,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-11-23 18:40:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:42,055 INFO L124 PetriNetUnfolderBase]: 5071/9381 cut-off events. [2024-11-23 18:40:42,056 INFO L125 PetriNetUnfolderBase]: For 37851/37926 co-relation queries the response was YES. [2024-11-23 18:40:42,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35149 conditions, 9381 events. 5071/9381 cut-off events. For 37851/37926 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 59210 event pairs, 1334 based on Foata normal form. 376/9757 useless extension candidates. Maximal degree in co-relation 35117. Up to 3419 conditions per place. [2024-11-23 18:40:42,174 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 121 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-11-23 18:40:42,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 137 transitions, 1386 flow [2024-11-23 18:40:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:40:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 18:40:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-11-23 18:40:42,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-23 18:40:42,177 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 630 flow. Second operand 5 states and 69 transitions. [2024-11-23 18:40:42,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 137 transitions, 1386 flow [2024-11-23 18:40:42,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 137 transitions, 1343 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-23 18:40:42,436 INFO L231 Difference]: Finished difference. Result has 88 places, 73 transitions, 637 flow [2024-11-23 18:40:42,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=637, PETRI_PLACES=88, PETRI_TRANSITIONS=73} [2024-11-23 18:40:42,438 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2024-11-23 18:40:42,441 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 73 transitions, 637 flow [2024-11-23 18:40:42,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:42,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:42,442 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2024-11-23 18:40:42,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 18:40:42,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 18:40:42,654 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:42,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 755265831, now seen corresponding path program 2 times [2024-11-23 18:40:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064209185] [2024-11-23 18:40:42,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:42,699 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:40:42,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064209185] [2024-11-23 18:40:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064209185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230964681] [2024-11-23 18:40:43,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:43,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:43,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:43,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:43,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:40:43,238 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 18:40:43,239 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:43,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 18:40:43,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:43,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230964681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:43,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:43,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-23 18:40:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121613391] [2024-11-23 18:40:43,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:43,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 18:40:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:43,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 18:40:43,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:40:43,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:43,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 73 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:43,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:43,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:43,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:48,411 INFO L124 PetriNetUnfolderBase]: 11167/21524 cut-off events. [2024-11-23 18:40:48,411 INFO L125 PetriNetUnfolderBase]: For 131844/132111 co-relation queries the response was YES. [2024-11-23 18:40:48,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81731 conditions, 21524 events. 11167/21524 cut-off events. For 131844/132111 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 153097 event pairs, 298 based on Foata normal form. 624/22145 useless extension candidates. Maximal degree in co-relation 81700. Up to 4339 conditions per place. [2024-11-23 18:40:48,596 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 492 selfloop transitions, 94 changer transitions 0/591 dead transitions. [2024-11-23 18:40:48,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 591 transitions, 5006 flow [2024-11-23 18:40:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 18:40:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-23 18:40:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 479 transitions. [2024-11-23 18:40:48,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7127976190476191 [2024-11-23 18:40:48,602 INFO L175 Difference]: Start difference. First operand has 88 places, 73 transitions, 637 flow. Second operand 21 states and 479 transitions. [2024-11-23 18:40:48,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 591 transitions, 5006 flow [2024-11-23 18:40:48,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 591 transitions, 4904 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:40:48,811 INFO L231 Difference]: Finished difference. Result has 123 places, 139 transitions, 1623 flow [2024-11-23 18:40:48,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1623, PETRI_PLACES=123, PETRI_TRANSITIONS=139} [2024-11-23 18:40:48,813 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2024-11-23 18:40:48,813 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 139 transitions, 1623 flow [2024-11-23 18:40:48,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:48,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:48,814 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:48,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:40:49,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 18:40:49,015 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:49,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1454765713, now seen corresponding path program 2 times [2024-11-23 18:40:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341791804] [2024-11-23 18:40:49,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:49,038 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:40:49,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 18:40:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341791804] [2024-11-23 18:40:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341791804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287835692] [2024-11-23 18:40:49,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 18:40:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:49,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:49,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:49,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:40:49,188 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 18:40:49,188 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:49,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 18:40:49,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 18:40:49,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-23 18:40:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287835692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:49,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:49,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-23 18:40:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006103301] [2024-11-23 18:40:49,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:49,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:40:49,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:49,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:40:49,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:40:49,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-23 18:40:49,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 139 transitions, 1623 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:49,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:49,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-23 18:40:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:40:54,523 INFO L124 PetriNetUnfolderBase]: 11167/21553 cut-off events. [2024-11-23 18:40:54,523 INFO L125 PetriNetUnfolderBase]: For 113642/113642 co-relation queries the response was YES. [2024-11-23 18:40:54,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85774 conditions, 21553 events. 11167/21553 cut-off events. For 113642/113642 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 155040 event pairs, 1880 based on Foata normal form. 445/21997 useless extension candidates. Maximal degree in co-relation 85724. Up to 7645 conditions per place. [2024-11-23 18:40:54,776 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 246 selfloop transitions, 15 changer transitions 6/271 dead transitions. [2024-11-23 18:40:54,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 271 transitions, 3850 flow [2024-11-23 18:40:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:40:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 18:40:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-23 18:40:54,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-11-23 18:40:54,778 INFO L175 Difference]: Start difference. First operand has 123 places, 139 transitions, 1623 flow. Second operand 5 states and 71 transitions. [2024-11-23 18:40:54,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 271 transitions, 3850 flow [2024-11-23 18:40:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 271 transitions, 3404 flow, removed 176 selfloop flow, removed 9 redundant places. [2024-11-23 18:40:55,165 INFO L231 Difference]: Finished difference. Result has 118 places, 138 transitions, 1459 flow [2024-11-23 18:40:55,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1459, PETRI_PLACES=118, PETRI_TRANSITIONS=138} [2024-11-23 18:40:55,166 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2024-11-23 18:40:55,166 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 138 transitions, 1459 flow [2024-11-23 18:40:55,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:55,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:40:55,167 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2024-11-23 18:40:55,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 18:40:55,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 18:40:55,368 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:40:55,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 65512071, now seen corresponding path program 3 times [2024-11-23 18:40:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387975538] [2024-11-23 18:40:55,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:40:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:55,493 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-23 18:40:55,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387975538] [2024-11-23 18:40:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387975538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:40:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158690740] [2024-11-23 18:40:56,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 18:40:56,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:40:56,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:40:56,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:40:56,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:40:56,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-23 18:40:56,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:40:56,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-23 18:40:57,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:40:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:57,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:40:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:40:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158690740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:58,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:40:58,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2024-11-23 18:40:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853883735] [2024-11-23 18:40:58,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:58,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 18:40:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:58,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 18:40:58,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 18:40:58,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:40:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 138 transitions, 1459 flow. Second operand has 41 states, 41 states have (on average 11.926829268292684) internal successors, (489), 41 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:40:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:40:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:40:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 18:41:09,831 INFO L124 PetriNetUnfolderBase]: 20198/40547 cut-off events. [2024-11-23 18:41:09,831 INFO L125 PetriNetUnfolderBase]: For 613400/613404 co-relation queries the response was YES. [2024-11-23 18:41:10,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160311 conditions, 40547 events. 20198/40547 cut-off events. For 613400/613404 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 298010 event pairs, 395 based on Foata normal form. 1174/41718 useless extension candidates. Maximal degree in co-relation 160267. Up to 7963 conditions per place. [2024-11-23 18:41:10,284 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 933 selfloop transitions, 330 changer transitions 0/1267 dead transitions. [2024-11-23 18:41:10,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1267 transitions, 12232 flow [2024-11-23 18:41:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-23 18:41:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-23 18:41:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 881 transitions. [2024-11-23 18:41:10,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6714939024390244 [2024-11-23 18:41:10,290 INFO L175 Difference]: Start difference. First operand has 118 places, 138 transitions, 1459 flow. Second operand 41 states and 881 transitions. [2024-11-23 18:41:10,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1267 transitions, 12232 flow [2024-11-23 18:41:10,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 1267 transitions, 11529 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 18:41:10,643 INFO L231 Difference]: Finished difference. Result has 191 places, 374 transitions, 4852 flow [2024-11-23 18:41:10,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4852, PETRI_PLACES=191, PETRI_TRANSITIONS=374} [2024-11-23 18:41:10,644 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 158 predicate places. [2024-11-23 18:41:10,644 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 374 transitions, 4852 flow [2024-11-23 18:41:10,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.926829268292684) internal successors, (489), 41 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:10,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 18:41:10,645 INFO L206 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2024-11-23 18:41:10,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 18:41:10,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:41:10,846 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-23 18:41:10,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash 133872967, now seen corresponding path program 4 times [2024-11-23 18:41:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:10,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910295271] [2024-11-23 18:41:10,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 18:41:10,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:11,019 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 18:41:11,020 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:41:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910295271] [2024-11-23 18:41:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910295271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:41:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067654551] [2024-11-23 18:41:15,474 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 18:41:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:41:15,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:41:15,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:41:15,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12d07b64-60fa-402b-bec4-1409be6d48f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:41:15,671 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 18:41:15,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 18:41:15,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-23 18:41:15,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:41:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:16,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:41:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:41:20,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067654551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:41:20,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:41:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2024-11-23 18:41:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385552970] [2024-11-23 18:41:20,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:41:20,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-23 18:41:20,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:20,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-23 18:41:20,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2024-11-23 18:41:20,316 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-23 18:41:20,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 374 transitions, 4852 flow. Second operand has 81 states, 81 states have (on average 11.962962962962964) internal successors, (969), 81 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:41:20,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 18:41:20,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-23 18:41:20,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand