./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1 --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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:43:18,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:43:18,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 12:43:18,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:43:18,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:43:18,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:43:18,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:43:18,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:43:18,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:43:18,311 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:43:18,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:43:18,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:43:18,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:43:18,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:43:18,312 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:43:18,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:43:18,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:43:18,313 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:43:18,314 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:43:18,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:18,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:18,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:43:18,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:43:18,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:43:18,316 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_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1 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 -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-12-02 12:43:18,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:43:18,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:43:18,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:43:18,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:43:18,546 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:43:18,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-12-02 12:43:21,184 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/data/41f2f8cb2/4227d15f1891491e985a425cd0c5d41a/FLAGb2ca982b5 [2024-12-02 12:43:21,421 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:43:21,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-12-02 12:43:21,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/data/41f2f8cb2/4227d15f1891491e985a425cd0c5d41a/FLAGb2ca982b5 [2024-12-02 12:43:21,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/data/41f2f8cb2/4227d15f1891491e985a425cd0c5d41a [2024-12-02 12:43:21,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:43:21,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:43:21,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:43:21,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:43:21,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:43:21,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:21,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d01218b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21, skipping insertion in model container [2024-12-02 12:43:21,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:21,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:43:21,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:43:21,940 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:43:21,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:43:21,973 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:43:21,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21 WrapperNode [2024-12-02 12:43:21,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:43:21,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:43:21,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:43:21,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:43:21,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:21,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,006 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 167 [2024-12-02 12:43:22,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:43:22,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:43:22,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:43:22,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:43:22,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,030 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 12:43:22,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:43:22,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:43:22,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:43:22,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:43:22,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (1/1) ... [2024-12-02 12:43:22,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:43:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:22,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:43:22,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:43:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:43:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:43:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:43:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:43:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 12:43:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 12:43:22,107 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:43:22,213 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:43:22,215 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:43:22,560 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:43:22,560 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:43:22,740 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:43:22,740 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 12:43:22,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:43:22 BoogieIcfgContainer [2024-12-02 12:43:22,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:43:22,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:43:22,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:43:22,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:43:22,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:43:21" (1/3) ... [2024-12-02 12:43:22,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acaec49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:43:22, skipping insertion in model container [2024-12-02 12:43:22,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:43:21" (2/3) ... [2024-12-02 12:43:22,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acaec49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:43:22, skipping insertion in model container [2024-12-02 12:43:22,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:43:22" (3/3) ... [2024-12-02 12:43:22,751 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-12-02 12:43:22,768 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:43:22,770 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue.wvr.c that has 3 procedures, 64 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2024-12-02 12:43:22,770 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:43:22,844 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 12:43:22,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2024-12-02 12:43:22,915 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-12-02 12:43:22,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:43:22,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-12-02 12:43:22,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2024-12-02 12:43:22,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2024-12-02 12:43:22,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:43:22,944 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;@2d20a2f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:43:22,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-12-02 12:43:22,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:43:22,948 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 12:43:22,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 12:43:22,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:22,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 12:43:22,949 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:22,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:22,954 INFO L85 PathProgramCache]: Analyzing trace with hash 524405, now seen corresponding path program 1 times [2024-12-02 12:43:22,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:22,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958076646] [2024-12-02 12:43:22,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:22,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:23,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958076646] [2024-12-02 12:43:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958076646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:23,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:23,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:43:23,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73909893] [2024-12-02 12:43:23,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:23,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:23,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:23,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:23,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:23,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-12-02 12:43:23,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:23,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:23,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:23,470 INFO L124 PetriNetUnfolderBase]: 341/925 cut-off events. [2024-12-02 12:43:23,470 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-12-02 12:43:23,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 925 events. 341/925 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6065 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1411. Up to 531 conditions per place. [2024-12-02 12:43:23,479 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 30 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-12-02 12:43:23,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 215 flow [2024-12-02 12:43:23,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:23,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-12-02 12:43:23,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-12-02 12:43:23,492 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 184 transitions. [2024-12-02 12:43:23,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 215 flow [2024-12-02 12:43:23,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 12:43:23,500 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2024-12-02 12:43:23,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-12-02 12:43:23,505 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-12-02 12:43:23,505 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2024-12-02 12:43:23,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-12-02 12:43:23,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:23,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 12:43:23,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:43:23,506 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:23,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1556814644, now seen corresponding path program 1 times [2024-12-02 12:43:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:23,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868937930] [2024-12-02 12:43:23,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868937930] [2024-12-02 12:43:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868937930] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427554980] [2024-12-02 12:43:23,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:23,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:23,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:23,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:23,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:43:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:23,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:43:23,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:23,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427554980] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 12:43:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036183191] [2024-12-02 12:43:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:23,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:43:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:23,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:43:23,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:43:23,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:23,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-12-02 12:43:23,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:23,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:23,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:24,010 INFO L124 PetriNetUnfolderBase]: 341/924 cut-off events. [2024-12-02 12:43:24,010 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 12:43:24,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 924 events. 341/924 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6056 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1461. Up to 526 conditions per place. [2024-12-02 12:43:24,016 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 26 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-12-02 12:43:24,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 227 flow [2024-12-02 12:43:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:43:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:43:24,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-12-02 12:43:24,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-12-02 12:43:24,019 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 256 transitions. [2024-12-02 12:43:24,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 227 flow [2024-12-02 12:43:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:43:24,021 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2024-12-02 12:43:24,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-12-02 12:43:24,022 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-12-02 12:43:24,022 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2024-12-02 12:43:24,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-12-02 12:43:24,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:24,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 12:43:24,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:43:24,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:24,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:24,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1016613200, now seen corresponding path program 1 times [2024-12-02 12:43:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438540332] [2024-12-02 12:43:24,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438540332] [2024-12-02 12:43:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438540332] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108697483] [2024-12-02 12:43:24,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:24,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:24,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:24,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:24,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:43:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:24,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:43:24,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:24,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108697483] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:24,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 12:43:24,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539692604] [2024-12-02 12:43:24,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:24,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:43:24,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:24,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:43:24,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:43:24,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:24,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-12-02 12:43:24,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:24,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:24,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:24,730 INFO L124 PetriNetUnfolderBase]: 344/936 cut-off events. [2024-12-02 12:43:24,730 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-12-02 12:43:24,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 936 events. 344/936 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6143 event pairs, 222 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1462. Up to 533 conditions per place. [2024-12-02 12:43:24,736 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-12-02 12:43:24,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 310 flow [2024-12-02 12:43:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-12-02 12:43:24,739 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-12-02 12:43:24,739 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 415 transitions. [2024-12-02 12:43:24,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 310 flow [2024-12-02 12:43:24,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 264 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-12-02 12:43:24,742 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2024-12-02 12:43:24,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-12-02 12:43:24,742 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-12-02 12:43:24,743 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2024-12-02 12:43:24,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-12-02 12:43:24,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:24,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:24,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:43:24,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:24,944 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:24,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash -906766866, now seen corresponding path program 1 times [2024-12-02 12:43:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:24,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882037445] [2024-12-02 12:43:24,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882037445] [2024-12-02 12:43:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882037445] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:25,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950300644] [2024-12-02 12:43:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:25,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:25,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:25,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:25,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:25,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-12-02 12:43:25,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:25,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:25,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:25,295 INFO L124 PetriNetUnfolderBase]: 628/1452 cut-off events. [2024-12-02 12:43:25,296 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-12-02 12:43:25,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1452 events. 628/1452 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9859 event pairs, 222 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 2475. Up to 507 conditions per place. [2024-12-02 12:43:25,306 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-12-02 12:43:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 438 flow [2024-12-02 12:43:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-12-02 12:43:25,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-12-02 12:43:25,308 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 199 transitions. [2024-12-02 12:43:25,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 438 flow [2024-12-02 12:43:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 427 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-12-02 12:43:25,311 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2024-12-02 12:43:25,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-12-02 12:43:25,312 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-12-02 12:43:25,312 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2024-12-02 12:43:25,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2024-12-02 12:43:25,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:25,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:25,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:43:25,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:25,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1954998804, now seen corresponding path program 1 times [2024-12-02 12:43:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:25,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638518867] [2024-12-02 12:43:25,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638518867] [2024-12-02 12:43:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638518867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:25,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:43:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108178436] [2024-12-02 12:43:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:25,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:25,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:25,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:25,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-12-02 12:43:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-12-02 12:43:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-12-02 12:43:25,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:25,741 INFO L124 PetriNetUnfolderBase]: 511/1407 cut-off events. [2024-12-02 12:43:25,741 INFO L125 PetriNetUnfolderBase]: For 288/311 co-relation queries the response was YES. [2024-12-02 12:43:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1407 events. 511/1407 cut-off events. For 288/311 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10177 event pairs, 320 based on Foata normal form. 35/1179 useless extension candidates. Maximal degree in co-relation 2461. Up to 660 conditions per place. [2024-12-02 12:43:25,752 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 66 selfloop transitions, 5 changer transitions 2/109 dead transitions. [2024-12-02 12:43:25,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 459 flow [2024-12-02 12:43:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:43:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:43:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-12-02 12:43:25,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2024-12-02 12:43:25,754 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 258 transitions. [2024-12-02 12:43:25,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 459 flow [2024-12-02 12:43:25,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:25,760 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2024-12-02 12:43:25,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-12-02 12:43:25,761 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-12-02 12:43:25,761 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2024-12-02 12:43:25,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-12-02 12:43:25,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:25,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:25,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:43:25,762 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:25,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash 298811343, now seen corresponding path program 1 times [2024-12-02 12:43:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500634435] [2024-12-02 12:43:25,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500634435] [2024-12-02 12:43:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500634435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674031799] [2024-12-02 12:43:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:25,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:25,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:25,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:25,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:25,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:25,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:25,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:25,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:25,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:26,184 INFO L124 PetriNetUnfolderBase]: 939/2223 cut-off events. [2024-12-02 12:43:26,184 INFO L125 PetriNetUnfolderBase]: For 817/845 co-relation queries the response was YES. [2024-12-02 12:43:26,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 2223 events. 939/2223 cut-off events. For 817/845 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16373 event pairs, 343 based on Foata normal form. 80/1959 useless extension candidates. Maximal degree in co-relation 4403. Up to 804 conditions per place. [2024-12-02 12:43:26,198 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-12-02 12:43:26,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 580 flow [2024-12-02 12:43:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-12-02 12:43:26,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-12-02 12:43:26,200 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 197 transitions. [2024-12-02 12:43:26,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 580 flow [2024-12-02 12:43:26,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:43:26,205 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2024-12-02 12:43:26,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-12-02 12:43:26,206 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-12-02 12:43:26,206 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2024-12-02 12:43:26,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:26,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:26,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:26,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:43:26,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:26,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:26,207 INFO L85 PathProgramCache]: Analyzing trace with hash 673217646, now seen corresponding path program 1 times [2024-12-02 12:43:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111560863] [2024-12-02 12:43:26,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111560863] [2024-12-02 12:43:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111560863] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:26,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:43:26,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777064997] [2024-12-02 12:43:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:26,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:26,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:26,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:26,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-12-02 12:43:26,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-12-02 12:43:26,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:26,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-12-02 12:43:26,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:26,518 INFO L124 PetriNetUnfolderBase]: 581/1587 cut-off events. [2024-12-02 12:43:26,518 INFO L125 PetriNetUnfolderBase]: For 769/811 co-relation queries the response was YES. [2024-12-02 12:43:26,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1587 events. 581/1587 cut-off events. For 769/811 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11918 event pairs, 397 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 3227. Up to 847 conditions per place. [2024-12-02 12:43:26,529 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 42 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2024-12-02 12:43:26,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 452 flow [2024-12-02 12:43:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:43:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 12:43:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-12-02 12:43:26,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-12-02 12:43:26,530 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 241 transitions. [2024-12-02 12:43:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 452 flow [2024-12-02 12:43:26,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:26,536 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2024-12-02 12:43:26,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-12-02 12:43:26,536 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-12-02 12:43:26,537 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2024-12-02 12:43:26,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-12-02 12:43:26,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:26,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:26,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:43:26,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:26,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1841421283, now seen corresponding path program 1 times [2024-12-02 12:43:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:26,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855374035] [2024-12-02 12:43:26,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:26,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:26,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855374035] [2024-12-02 12:43:26,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855374035] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:26,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312116957] [2024-12-02 12:43:26,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:26,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:26,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:26,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:43:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:26,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:43:26,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:26,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 12:43:26,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-02 12:43:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:26,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:27,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:43:27,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-12-02 12:43:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:27,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312116957] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:27,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:27,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:43:27,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656599532] [2024-12-02 12:43:27,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:27,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:43:27,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:27,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:43:27,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:43:27,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-12-02 12:43:27,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-12-02 12:43:27,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:27,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-12-02 12:43:27,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:27,795 INFO L124 PetriNetUnfolderBase]: 1225/3179 cut-off events. [2024-12-02 12:43:27,796 INFO L125 PetriNetUnfolderBase]: For 1688/1779 co-relation queries the response was YES. [2024-12-02 12:43:27,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 3179 events. 1225/3179 cut-off events. For 1688/1779 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25027 event pairs, 338 based on Foata normal form. 53/2869 useless extension candidates. Maximal degree in co-relation 6680. Up to 707 conditions per place. [2024-12-02 12:43:27,826 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 103 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-12-02 12:43:27,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 816 flow [2024-12-02 12:43:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-12-02 12:43:27,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585714285714286 [2024-12-02 12:43:27,829 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 461 transitions. [2024-12-02 12:43:27,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 816 flow [2024-12-02 12:43:27,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 772 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-12-02 12:43:27,836 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2024-12-02 12:43:27,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-12-02 12:43:27,837 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-12-02 12:43:27,837 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2024-12-02 12:43:27,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-12-02 12:43:27,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:27,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:27,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:43:28,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:28,038 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:28,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1249516119, now seen corresponding path program 1 times [2024-12-02 12:43:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635807921] [2024-12-02 12:43:28,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:28,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:28,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635807921] [2024-12-02 12:43:28,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635807921] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684331140] [2024-12-02 12:43:28,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:28,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:28,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:28,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:43:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:28,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:43:28,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:28,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 12:43:28,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 12:43:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:28,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:28,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-12-02 12:43:28,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:43:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:28,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684331140] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:28,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:28,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:43:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278540712] [2024-12-02 12:43:28,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:28,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:43:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:28,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:43:28,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:43:28,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-12-02 12:43:28,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-12-02 12:43:28,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:28,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-12-02 12:43:28,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:29,031 INFO L124 PetriNetUnfolderBase]: 1485/3465 cut-off events. [2024-12-02 12:43:29,031 INFO L125 PetriNetUnfolderBase]: For 2650/2765 co-relation queries the response was YES. [2024-12-02 12:43:29,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3465 events. 1485/3465 cut-off events. For 2650/2765 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26029 event pairs, 456 based on Foata normal form. 91/3212 useless extension candidates. Maximal degree in co-relation 7934. Up to 911 conditions per place. [2024-12-02 12:43:29,050 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 107 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-12-02 12:43:29,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 857 flow [2024-12-02 12:43:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2024-12-02 12:43:29,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-12-02 12:43:29,053 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 441 transitions. [2024-12-02 12:43:29,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 857 flow [2024-12-02 12:43:29,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:29,059 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2024-12-02 12:43:29,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-12-02 12:43:29,060 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-12-02 12:43:29,060 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2024-12-02 12:43:29,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-12-02 12:43:29,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:29,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:29,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:43:29,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 12:43:29,261 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:29,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1259251657, now seen corresponding path program 1 times [2024-12-02 12:43:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491018392] [2024-12-02 12:43:29,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491018392] [2024-12-02 12:43:29,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491018392] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508703363] [2024-12-02 12:43:29,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:29,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:29,438 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:29,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:43:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:29,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:43:29,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:29,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 12:43:29,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 12:43:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:29,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:29,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-12-02 12:43:29,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:43:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508703363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:29,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:43:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379083704] [2024-12-02 12:43:29,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:29,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:43:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:29,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:43:29,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:43:29,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-12-02 12:43:29,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-12-02 12:43:29,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:29,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-12-02 12:43:29,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:30,474 INFO L124 PetriNetUnfolderBase]: 2343/5937 cut-off events. [2024-12-02 12:43:30,475 INFO L125 PetriNetUnfolderBase]: For 7130/7337 co-relation queries the response was YES. [2024-12-02 12:43:30,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13860 conditions, 5937 events. 2343/5937 cut-off events. For 7130/7337 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 50218 event pairs, 608 based on Foata normal form. 131/5421 useless extension candidates. Maximal degree in co-relation 13819. Up to 1387 conditions per place. [2024-12-02 12:43:30,500 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 139 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-12-02 12:43:30,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 194 transitions, 1369 flow [2024-12-02 12:43:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 457 transitions. [2024-12-02 12:43:30,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6528571428571428 [2024-12-02 12:43:30,502 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 10 states and 457 transitions. [2024-12-02 12:43:30,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 194 transitions, 1369 flow [2024-12-02 12:43:30,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1297 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-12-02 12:43:30,511 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 518 flow [2024-12-02 12:43:30,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-12-02 12:43:30,512 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-12-02 12:43:30,512 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 518 flow [2024-12-02 12:43:30,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-12-02 12:43:30,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:30,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:30,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:43:30,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:43:30,713 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:30,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash -80293440, now seen corresponding path program 1 times [2024-12-02 12:43:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:30,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801095036] [2024-12-02 12:43:30,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801095036] [2024-12-02 12:43:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801095036] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:30,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:30,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473507905] [2024-12-02 12:43:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:30,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:30,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:30,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:30,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:30,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:30,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:30,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:30,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:31,333 INFO L124 PetriNetUnfolderBase]: 2693/6576 cut-off events. [2024-12-02 12:43:31,333 INFO L125 PetriNetUnfolderBase]: For 9578/9813 co-relation queries the response was YES. [2024-12-02 12:43:31,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16878 conditions, 6576 events. 2693/6576 cut-off events. For 9578/9813 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 55614 event pairs, 1059 based on Foata normal form. 203/6091 useless extension candidates. Maximal degree in co-relation 16835. Up to 2290 conditions per place. [2024-12-02 12:43:31,372 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 105 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-12-02 12:43:31,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 985 flow [2024-12-02 12:43:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-12-02 12:43:31,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-12-02 12:43:31,373 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 518 flow. Second operand 4 states and 196 transitions. [2024-12-02 12:43:31,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 985 flow [2024-12-02 12:43:31,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 964 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 12:43:31,392 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 500 flow [2024-12-02 12:43:31,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-12-02 12:43:31,393 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2024-12-02 12:43:31,393 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 500 flow [2024-12-02 12:43:31,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:31,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:31,393 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:31,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:43:31,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:31,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash -80294465, now seen corresponding path program 1 times [2024-12-02 12:43:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059047242] [2024-12-02 12:43:31,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059047242] [2024-12-02 12:43:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059047242] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058198894] [2024-12-02 12:43:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:31,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:31,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:31,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:31,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:31,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:31,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:31,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:32,324 INFO L124 PetriNetUnfolderBase]: 3978/9268 cut-off events. [2024-12-02 12:43:32,324 INFO L125 PetriNetUnfolderBase]: For 12020/12363 co-relation queries the response was YES. [2024-12-02 12:43:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 9268 events. 3978/9268 cut-off events. For 12020/12363 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 80374 event pairs, 938 based on Foata normal form. 166/8671 useless extension candidates. Maximal degree in co-relation 23309. Up to 3970 conditions per place. [2024-12-02 12:43:32,364 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 165 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-12-02 12:43:32,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 213 transitions, 1457 flow [2024-12-02 12:43:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:43:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:43:32,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-12-02 12:43:32,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-12-02 12:43:32,366 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 500 flow. Second operand 7 states and 357 transitions. [2024-12-02 12:43:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 213 transitions, 1457 flow [2024-12-02 12:43:32,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:43:32,389 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 623 flow [2024-12-02 12:43:32,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-12-02 12:43:32,389 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-12-02 12:43:32,389 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 623 flow [2024-12-02 12:43:32,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:32,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:32,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:32,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:43:32,390 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:32,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1805839468, now seen corresponding path program 1 times [2024-12-02 12:43:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466184844] [2024-12-02 12:43:32,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:32,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:32,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466184844] [2024-12-02 12:43:32,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466184844] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:32,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:32,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:43:32,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053381103] [2024-12-02 12:43:32,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:32,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:43:32,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:32,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:43:32,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:43:32,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-12-02 12:43:32,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:32,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:32,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-12-02 12:43:32,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:33,760 INFO L124 PetriNetUnfolderBase]: 5162/11434 cut-off events. [2024-12-02 12:43:33,760 INFO L125 PetriNetUnfolderBase]: For 19478/20013 co-relation queries the response was YES. [2024-12-02 12:43:33,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31222 conditions, 11434 events. 5162/11434 cut-off events. For 19478/20013 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 100369 event pairs, 969 based on Foata normal form. 318/10751 useless extension candidates. Maximal degree in co-relation 31177. Up to 4317 conditions per place. [2024-12-02 12:43:33,863 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 225 selfloop transitions, 31 changer transitions 0/287 dead transitions. [2024-12-02 12:43:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 287 transitions, 2083 flow [2024-12-02 12:43:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:43:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:43:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 497 transitions. [2024-12-02 12:43:33,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-12-02 12:43:33,864 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 623 flow. Second operand 11 states and 497 transitions. [2024-12-02 12:43:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 287 transitions, 2083 flow [2024-12-02 12:43:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 287 transitions, 2081 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:33,912 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 843 flow [2024-12-02 12:43:33,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2024-12-02 12:43:33,913 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 64 predicate places. [2024-12-02 12:43:33,913 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 843 flow [2024-12-02 12:43:33,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:33,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:33,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:33,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:43:33,914 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:33,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:33,914 INFO L85 PathProgramCache]: Analyzing trace with hash -382126870, now seen corresponding path program 1 times [2024-12-02 12:43:33,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:33,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557896278] [2024-12-02 12:43:33,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:33,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557896278] [2024-12-02 12:43:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557896278] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412840632] [2024-12-02 12:43:34,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:34,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:43:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:34,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 12:43:34,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:34,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 12:43:34,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-02 12:43:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:34,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:34,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-02 12:43:34,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-12-02 12:43:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412840632] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:34,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:34,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 12:43:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038291420] [2024-12-02 12:43:34,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:34,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:43:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:34,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:43:34,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:43:34,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-12-02 12:43:34,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 843 flow. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-12-02 12:43:34,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:34,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-12-02 12:43:34,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:35,346 INFO L124 PetriNetUnfolderBase]: 3690/8547 cut-off events. [2024-12-02 12:43:35,346 INFO L125 PetriNetUnfolderBase]: For 20724/21147 co-relation queries the response was YES. [2024-12-02 12:43:35,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23895 conditions, 8547 events. 3690/8547 cut-off events. For 20724/21147 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 74256 event pairs, 931 based on Foata normal form. 233/7996 useless extension candidates. Maximal degree in co-relation 23845. Up to 2561 conditions per place. [2024-12-02 12:43:35,393 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 186 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2024-12-02 12:43:35,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 255 transitions, 2181 flow [2024-12-02 12:43:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2024-12-02 12:43:35,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242857142857143 [2024-12-02 12:43:35,395 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 843 flow. Second operand 10 states and 437 transitions. [2024-12-02 12:43:35,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 255 transitions, 2181 flow [2024-12-02 12:43:35,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 255 transitions, 2163 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:35,482 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 897 flow [2024-12-02 12:43:35,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=897, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-12-02 12:43:35,483 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 75 predicate places. [2024-12-02 12:43:35,483 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 897 flow [2024-12-02 12:43:35,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-12-02 12:43:35,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:35,483 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:35,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:43:35,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:43:35,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:35,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1093766341, now seen corresponding path program 1 times [2024-12-02 12:43:35,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777549280] [2024-12-02 12:43:35,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:35,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777549280] [2024-12-02 12:43:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777549280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:43:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560395610] [2024-12-02 12:43:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:35,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:35,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:35,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:35,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-12-02 12:43:35,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 897 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-12-02 12:43:35,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:35,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-12-02 12:43:35,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:36,832 INFO L124 PetriNetUnfolderBase]: 4053/9109 cut-off events. [2024-12-02 12:43:36,832 INFO L125 PetriNetUnfolderBase]: For 23106/23388 co-relation queries the response was YES. [2024-12-02 12:43:36,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28195 conditions, 9109 events. 4053/9109 cut-off events. For 23106/23388 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 77827 event pairs, 1543 based on Foata normal form. 212/8703 useless extension candidates. Maximal degree in co-relation 28139. Up to 3402 conditions per place. [2024-12-02 12:43:36,893 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 163 selfloop transitions, 20 changer transitions 0/226 dead transitions. [2024-12-02 12:43:36,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 226 transitions, 1832 flow [2024-12-02 12:43:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:43:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:43:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-12-02 12:43:36,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-12-02 12:43:36,895 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 897 flow. Second operand 6 states and 279 transitions. [2024-12-02 12:43:36,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 226 transitions, 1832 flow [2024-12-02 12:43:36,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 226 transitions, 1738 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-12-02 12:43:36,975 INFO L231 Difference]: Finished difference. Result has 138 places, 134 transitions, 910 flow [2024-12-02 12:43:36,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2024-12-02 12:43:36,976 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 72 predicate places. [2024-12-02 12:43:36,976 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 910 flow [2024-12-02 12:43:36,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-12-02 12:43:36,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:36,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:36,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:43:36,976 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:36,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1093765316, now seen corresponding path program 1 times [2024-12-02 12:43:36,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:36,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112482692] [2024-12-02 12:43:36,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:36,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:37,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112482692] [2024-12-02 12:43:37,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112482692] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:37,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:37,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:37,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746595453] [2024-12-02 12:43:37,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:37,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:37,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:37,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:37,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-12-02 12:43:37,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 910 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-12-02 12:43:37,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:37,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-12-02 12:43:37,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:37,890 INFO L124 PetriNetUnfolderBase]: 4375/9803 cut-off events. [2024-12-02 12:43:37,890 INFO L125 PetriNetUnfolderBase]: For 23414/23668 co-relation queries the response was YES. [2024-12-02 12:43:37,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30358 conditions, 9803 events. 4375/9803 cut-off events. For 23414/23668 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 84575 event pairs, 1757 based on Foata normal form. 342/9477 useless extension candidates. Maximal degree in co-relation 30306. Up to 3858 conditions per place. [2024-12-02 12:43:37,951 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 115 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2024-12-02 12:43:37,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 180 transitions, 1434 flow [2024-12-02 12:43:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-12-02 12:43:37,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-12-02 12:43:37,952 INFO L175 Difference]: Start difference. First operand has 138 places, 134 transitions, 910 flow. Second operand 4 states and 200 transitions. [2024-12-02 12:43:37,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 180 transitions, 1434 flow [2024-12-02 12:43:38,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 180 transitions, 1388 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:38,007 INFO L231 Difference]: Finished difference. Result has 139 places, 134 transitions, 925 flow [2024-12-02 12:43:38,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=925, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2024-12-02 12:43:38,008 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 73 predicate places. [2024-12-02 12:43:38,008 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 925 flow [2024-12-02 12:43:38,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-12-02 12:43:38,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:38,008 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:38,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:43:38,008 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:38,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1038968505, now seen corresponding path program 1 times [2024-12-02 12:43:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888957743] [2024-12-02 12:43:38,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888957743] [2024-12-02 12:43:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888957743] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:38,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:38,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917821712] [2024-12-02 12:43:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:38,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:38,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:38,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:38,097 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:38,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:38,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:38,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:38,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:39,079 INFO L124 PetriNetUnfolderBase]: 4854/10619 cut-off events. [2024-12-02 12:43:39,079 INFO L125 PetriNetUnfolderBase]: For 33213/33755 co-relation queries the response was YES. [2024-12-02 12:43:39,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33565 conditions, 10619 events. 4854/10619 cut-off events. For 33213/33755 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 91449 event pairs, 1188 based on Foata normal form. 356/10459 useless extension candidates. Maximal degree in co-relation 33513. Up to 5119 conditions per place. [2024-12-02 12:43:39,129 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 194 selfloop transitions, 23 changer transitions 0/260 dead transitions. [2024-12-02 12:43:39,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 260 transitions, 2282 flow [2024-12-02 12:43:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:43:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:43:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2024-12-02 12:43:39,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2024-12-02 12:43:39,130 INFO L175 Difference]: Start difference. First operand has 139 places, 134 transitions, 925 flow. Second operand 7 states and 353 transitions. [2024-12-02 12:43:39,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 260 transitions, 2282 flow [2024-12-02 12:43:39,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 260 transitions, 2239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:43:39,187 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 1068 flow [2024-12-02 12:43:39,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1068, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2024-12-02 12:43:39,187 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 82 predicate places. [2024-12-02 12:43:39,187 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 1068 flow [2024-12-02 12:43:39,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:39,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:39,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:39,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:43:39,188 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1038969530, now seen corresponding path program 1 times [2024-12-02 12:43:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:39,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563507128] [2024-12-02 12:43:39,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:39,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563507128] [2024-12-02 12:43:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563507128] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139744107] [2024-12-02 12:43:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:39,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:39,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:39,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:39,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-12-02 12:43:39,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-12-02 12:43:39,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:39,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-12-02 12:43:39,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:40,077 INFO L124 PetriNetUnfolderBase]: 3876/9219 cut-off events. [2024-12-02 12:43:40,077 INFO L125 PetriNetUnfolderBase]: For 28627/29045 co-relation queries the response was YES. [2024-12-02 12:43:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 9219 events. 3876/9219 cut-off events. For 28627/29045 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 82397 event pairs, 1420 based on Foata normal form. 386/9141 useless extension candidates. Maximal degree in co-relation 30260. Up to 3214 conditions per place. [2024-12-02 12:43:40,127 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 152 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-12-02 12:43:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 220 transitions, 2033 flow [2024-12-02 12:43:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-12-02 12:43:40,128 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-12-02 12:43:40,128 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 1068 flow. Second operand 4 states and 194 transitions. [2024-12-02 12:43:40,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 220 transitions, 2033 flow [2024-12-02 12:43:40,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 220 transitions, 2025 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 12:43:40,201 INFO L231 Difference]: Finished difference. Result has 150 places, 143 transitions, 1071 flow [2024-12-02 12:43:40,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1071, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2024-12-02 12:43:40,201 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2024-12-02 12:43:40,202 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 1071 flow [2024-12-02 12:43:40,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-12-02 12:43:40,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:40,202 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 12:43:40,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:43:40,202 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:40,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash -197781785, now seen corresponding path program 2 times [2024-12-02 12:43:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:40,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557406019] [2024-12-02 12:43:40,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:43:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:40,212 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:43:40,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:43:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:43:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557406019] [2024-12-02 12:43:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557406019] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66236817] [2024-12-02 12:43:40,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:43:40,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:40,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:40,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:40,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:43:40,322 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:43:40,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:43:40,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:43:40,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:43:40,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 12:43:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66236817] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:40,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:40,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 12:43:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614836164] [2024-12-02 12:43:40,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:40,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:40,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:40,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:40,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:40,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-12-02 12:43:40,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:40,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:40,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:41,204 INFO L124 PetriNetUnfolderBase]: 3060/8197 cut-off events. [2024-12-02 12:43:41,204 INFO L125 PetriNetUnfolderBase]: For 24738/25067 co-relation queries the response was YES. [2024-12-02 12:43:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26683 conditions, 8197 events. 3060/8197 cut-off events. For 24738/25067 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 77164 event pairs, 1992 based on Foata normal form. 195/7924 useless extension candidates. Maximal degree in co-relation 26630. Up to 4734 conditions per place. [2024-12-02 12:43:41,249 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 65 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-12-02 12:43:41,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1221 flow [2024-12-02 12:43:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-12-02 12:43:41,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-12-02 12:43:41,251 INFO L175 Difference]: Start difference. First operand has 150 places, 143 transitions, 1071 flow. Second operand 4 states and 178 transitions. [2024-12-02 12:43:41,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1221 flow [2024-12-02 12:43:41,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1191 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-12-02 12:43:41,302 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1061 flow [2024-12-02 12:43:41,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1061, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-12-02 12:43:41,302 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-12-02 12:43:41,302 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1061 flow [2024-12-02 12:43:41,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-12-02 12:43:41,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:41,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:41,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:43:41,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:41,503 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 275487911, now seen corresponding path program 1 times [2024-12-02 12:43:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:41,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610303627] [2024-12-02 12:43:41,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610303627] [2024-12-02 12:43:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610303627] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206308274] [2024-12-02 12:43:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:41,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:41,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:41,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:41,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-12-02 12:43:41,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 12:43:41,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:41,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-12-02 12:43:41,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:42,845 INFO L124 PetriNetUnfolderBase]: 4288/9371 cut-off events. [2024-12-02 12:43:42,846 INFO L125 PetriNetUnfolderBase]: For 29405/29862 co-relation queries the response was YES. [2024-12-02 12:43:42,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31185 conditions, 9371 events. 4288/9371 cut-off events. For 29405/29862 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 79978 event pairs, 2218 based on Foata normal form. 375/9332 useless extension candidates. Maximal degree in co-relation 31066. Up to 5129 conditions per place. [2024-12-02 12:43:42,905 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 138 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2024-12-02 12:43:42,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 197 transitions, 1727 flow [2024-12-02 12:43:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-12-02 12:43:42,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-12-02 12:43:42,906 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1061 flow. Second operand 4 states and 203 transitions. [2024-12-02 12:43:42,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 197 transitions, 1727 flow [2024-12-02 12:43:42,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 1691 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:42,976 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 1072 flow [2024-12-02 12:43:42,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1072, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2024-12-02 12:43:42,977 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 81 predicate places. [2024-12-02 12:43:42,977 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 1072 flow [2024-12-02 12:43:42,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-12-02 12:43:42,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:42,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:42,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:43:42,977 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:42,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2143253197, now seen corresponding path program 1 times [2024-12-02 12:43:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824016845] [2024-12-02 12:43:42,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824016845] [2024-12-02 12:43:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824016845] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:43:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174993823] [2024-12-02 12:43:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:43,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:43:43,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:43,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:43:43,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:43:43,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-12-02 12:43:43,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 1072 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:43,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:43,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-12-02 12:43:43,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:44,346 INFO L124 PetriNetUnfolderBase]: 6301/12880 cut-off events. [2024-12-02 12:43:44,346 INFO L125 PetriNetUnfolderBase]: For 52765/53581 co-relation queries the response was YES. [2024-12-02 12:43:44,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44429 conditions, 12880 events. 6301/12880 cut-off events. For 52765/53581 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 109484 event pairs, 1278 based on Foata normal form. 575/12786 useless extension candidates. Maximal degree in co-relation 44325. Up to 5666 conditions per place. [2024-12-02 12:43:44,408 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 268 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-12-02 12:43:44,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 345 transitions, 3197 flow [2024-12-02 12:43:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:43:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:43:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 495 transitions. [2024-12-02 12:43:44,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-12-02 12:43:44,409 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 1072 flow. Second operand 11 states and 495 transitions. [2024-12-02 12:43:44,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 345 transitions, 3197 flow [2024-12-02 12:43:44,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 345 transitions, 3177 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:44,539 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 1348 flow [2024-12-02 12:43:44,540 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-12-02 12:43:44,540 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 94 predicate places. [2024-12-02 12:43:44,540 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 1348 flow [2024-12-02 12:43:44,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:44,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:44,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:44,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:43:44,541 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:44,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash -996174590, now seen corresponding path program 1 times [2024-12-02 12:43:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594779652] [2024-12-02 12:43:44,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:44,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594779652] [2024-12-02 12:43:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594779652] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163427162] [2024-12-02 12:43:44,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:44,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:44,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:44,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:44,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:44,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 1348 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-12-02 12:43:44,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:44,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:44,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:45,461 INFO L124 PetriNetUnfolderBase]: 3690/9393 cut-off events. [2024-12-02 12:43:45,461 INFO L125 PetriNetUnfolderBase]: For 37745/38181 co-relation queries the response was YES. [2024-12-02 12:43:45,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33059 conditions, 9393 events. 3690/9393 cut-off events. For 37745/38181 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 88263 event pairs, 1599 based on Foata normal form. 378/9441 useless extension candidates. Maximal degree in co-relation 32950. Up to 3233 conditions per place. [2024-12-02 12:43:45,515 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 161 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2024-12-02 12:43:45,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 235 transitions, 2224 flow [2024-12-02 12:43:45,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-12-02 12:43:45,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-12-02 12:43:45,515 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 1348 flow. Second operand 4 states and 216 transitions. [2024-12-02 12:43:45,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 235 transitions, 2224 flow [2024-12-02 12:43:45,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 2208 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:45,612 INFO L231 Difference]: Finished difference. Result has 165 places, 164 transitions, 1359 flow [2024-12-02 12:43:45,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1359, PETRI_PLACES=165, PETRI_TRANSITIONS=164} [2024-12-02 12:43:45,612 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 99 predicate places. [2024-12-02 12:43:45,612 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 164 transitions, 1359 flow [2024-12-02 12:43:45,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-12-02 12:43:45,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:45,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:45,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:43:45,613 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:45,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1331310946, now seen corresponding path program 1 times [2024-12-02 12:43:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:45,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792822490] [2024-12-02 12:43:45,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792822490] [2024-12-02 12:43:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792822490] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855909162] [2024-12-02 12:43:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:45,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:45,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:45,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:45,663 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-12-02 12:43:45,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 164 transitions, 1359 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-12-02 12:43:45,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:45,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-12-02 12:43:45,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:46,716 INFO L124 PetriNetUnfolderBase]: 5411/11420 cut-off events. [2024-12-02 12:43:46,716 INFO L125 PetriNetUnfolderBase]: For 48854/49492 co-relation queries the response was YES. [2024-12-02 12:43:46,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42017 conditions, 11420 events. 5411/11420 cut-off events. For 48854/49492 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 97471 event pairs, 2037 based on Foata normal form. 534/11545 useless extension candidates. Maximal degree in co-relation 41905. Up to 4855 conditions per place. [2024-12-02 12:43:46,796 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 166 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-12-02 12:43:46,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2459 flow [2024-12-02 12:43:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-12-02 12:43:46,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-12-02 12:43:46,797 INFO L175 Difference]: Start difference. First operand has 165 places, 164 transitions, 1359 flow. Second operand 4 states and 198 transitions. [2024-12-02 12:43:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2459 flow [2024-12-02 12:43:46,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 245 transitions, 2444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:43:46,923 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 1411 flow [2024-12-02 12:43:46,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1411, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2024-12-02 12:43:46,923 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 102 predicate places. [2024-12-02 12:43:46,923 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 1411 flow [2024-12-02 12:43:46,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-12-02 12:43:46,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:46,923 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:46,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 12:43:46,923 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:46,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1331309921, now seen corresponding path program 1 times [2024-12-02 12:43:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595791916] [2024-12-02 12:43:46,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:46,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595791916] [2024-12-02 12:43:46,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595791916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:46,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:46,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:43:46,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954836794] [2024-12-02 12:43:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:46,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:43:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:46,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:43:46,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:43:46,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-12-02 12:43:46,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 1411 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-12-02 12:43:46,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:46,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-12-02 12:43:46,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:48,063 INFO L124 PetriNetUnfolderBase]: 4864/10368 cut-off events. [2024-12-02 12:43:48,063 INFO L125 PetriNetUnfolderBase]: For 50161/50732 co-relation queries the response was YES. [2024-12-02 12:43:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 10368 events. 4864/10368 cut-off events. For 50161/50732 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 87563 event pairs, 1711 based on Foata normal form. 362/10438 useless extension candidates. Maximal degree in co-relation 39758. Up to 4217 conditions per place. [2024-12-02 12:43:48,110 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 249 selfloop transitions, 20 changer transitions 0/325 dead transitions. [2024-12-02 12:43:48,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 325 transitions, 3402 flow [2024-12-02 12:43:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:43:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:43:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-12-02 12:43:48,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-12-02 12:43:48,111 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 1411 flow. Second operand 6 states and 275 transitions. [2024-12-02 12:43:48,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 325 transitions, 3402 flow [2024-12-02 12:43:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 3351 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:48,213 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 1419 flow [2024-12-02 12:43:48,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1419, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-12-02 12:43:48,214 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 104 predicate places. [2024-12-02 12:43:48,214 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 1419 flow [2024-12-02 12:43:48,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-12-02 12:43:48,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:48,214 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:48,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 12:43:48,214 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:48,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1887432152, now seen corresponding path program 1 times [2024-12-02 12:43:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002883892] [2024-12-02 12:43:48,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:48,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002883892] [2024-12-02 12:43:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002883892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:48,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103520171] [2024-12-02 12:43:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:48,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:48,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:48,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:48,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-12-02 12:43:48,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 1419 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-12-02 12:43:48,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:48,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-12-02 12:43:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:49,215 INFO L124 PetriNetUnfolderBase]: 4836/10282 cut-off events. [2024-12-02 12:43:49,215 INFO L125 PetriNetUnfolderBase]: For 52348/52954 co-relation queries the response was YES. [2024-12-02 12:43:49,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40220 conditions, 10282 events. 4836/10282 cut-off events. For 52348/52954 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 86762 event pairs, 2474 based on Foata normal form. 510/10568 useless extension candidates. Maximal degree in co-relation 40108. Up to 5897 conditions per place. [2024-12-02 12:43:49,278 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 178 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2024-12-02 12:43:49,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 246 transitions, 2535 flow [2024-12-02 12:43:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-12-02 12:43:49,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2024-12-02 12:43:49,279 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 1419 flow. Second operand 4 states and 201 transitions. [2024-12-02 12:43:49,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 246 transitions, 2535 flow [2024-12-02 12:43:49,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 246 transitions, 2495 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:49,390 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1426 flow [2024-12-02 12:43:49,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1426, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-12-02 12:43:49,390 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 105 predicate places. [2024-12-02 12:43:49,391 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1426 flow [2024-12-02 12:43:49,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-12-02 12:43:49,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:49,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:49,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:43:49,391 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:49,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 672780220, now seen corresponding path program 1 times [2024-12-02 12:43:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562136597] [2024-12-02 12:43:49,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:49,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 12:43:49,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:49,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562136597] [2024-12-02 12:43:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562136597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:49,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957553354] [2024-12-02 12:43:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:49,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:49,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:49,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:49,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-12-02 12:43:49,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1426 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-12-02 12:43:49,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:49,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-12-02 12:43:49,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:50,245 INFO L124 PetriNetUnfolderBase]: 3675/8616 cut-off events. [2024-12-02 12:43:50,245 INFO L125 PetriNetUnfolderBase]: For 43890/44390 co-relation queries the response was YES. [2024-12-02 12:43:50,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34081 conditions, 8616 events. 3675/8616 cut-off events. For 43890/44390 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 76077 event pairs, 1285 based on Foata normal form. 401/8952 useless extension candidates. Maximal degree in co-relation 33969. Up to 3167 conditions per place. [2024-12-02 12:43:50,290 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 171 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2024-12-02 12:43:50,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 244 transitions, 2456 flow [2024-12-02 12:43:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:43:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-12-02 12:43:50,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-12-02 12:43:50,292 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1426 flow. Second operand 4 states and 214 transitions. [2024-12-02 12:43:50,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 244 transitions, 2456 flow [2024-12-02 12:43:50,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 244 transitions, 2452 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-12-02 12:43:50,403 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1445 flow [2024-12-02 12:43:50,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1445, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2024-12-02 12:43:50,403 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 110 predicate places. [2024-12-02 12:43:50,403 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1445 flow [2024-12-02 12:43:50,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-12-02 12:43:50,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:50,403 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:50,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:43:50,403 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:50,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1376876522, now seen corresponding path program 1 times [2024-12-02 12:43:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482073843] [2024-12-02 12:43:50,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:50,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482073843] [2024-12-02 12:43:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482073843] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272603085] [2024-12-02 12:43:50,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:50,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:50,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:43:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:50,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:43:50,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:50,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272603085] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:50,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-12-02 12:43:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774640173] [2024-12-02 12:43:50,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:50,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:43:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:50,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:43:50,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:43:50,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-12-02 12:43:50,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1445 flow. Second operand has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-12-02 12:43:50,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:50,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-12-02 12:43:50,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:52,291 INFO L124 PetriNetUnfolderBase]: 5767/13658 cut-off events. [2024-12-02 12:43:52,291 INFO L125 PetriNetUnfolderBase]: For 71630/72353 co-relation queries the response was YES. [2024-12-02 12:43:52,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54872 conditions, 13658 events. 5767/13658 cut-off events. For 71630/72353 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 130627 event pairs, 2713 based on Foata normal form. 475/13997 useless extension candidates. Maximal degree in co-relation 51097. Up to 5807 conditions per place. [2024-12-02 12:43:52,361 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 256 selfloop transitions, 16 changer transitions 6/347 dead transitions. [2024-12-02 12:43:52,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 347 transitions, 3608 flow [2024-12-02 12:43:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:43:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:43:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2024-12-02 12:43:52,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-12-02 12:43:52,362 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1445 flow. Second operand 10 states and 452 transitions. [2024-12-02 12:43:52,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 347 transitions, 3608 flow [2024-12-02 12:43:52,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 347 transitions, 3593 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 12:43:52,567 INFO L231 Difference]: Finished difference. Result has 188 places, 172 transitions, 1537 flow [2024-12-02 12:43:52,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1537, PETRI_PLACES=188, PETRI_TRANSITIONS=172} [2024-12-02 12:43:52,568 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2024-12-02 12:43:52,568 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 172 transitions, 1537 flow [2024-12-02 12:43:52,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-12-02 12:43:52,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:52,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:52,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:43:52,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 12:43:52,769 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:52,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:52,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1774037146, now seen corresponding path program 1 times [2024-12-02 12:43:52,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:52,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534023572] [2024-12-02 12:43:52,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:52,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534023572] [2024-12-02 12:43:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534023572] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:43:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717667401] [2024-12-02 12:43:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:52,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:43:52,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:52,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:43:52,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:43:52,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-12-02 12:43:52,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 172 transitions, 1537 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-12-02 12:43:52,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:52,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-12-02 12:43:52,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:43:56,997 INFO L124 PetriNetUnfolderBase]: 16432/32467 cut-off events. [2024-12-02 12:43:56,997 INFO L125 PetriNetUnfolderBase]: For 182438/183474 co-relation queries the response was YES. [2024-12-02 12:43:57,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135335 conditions, 32467 events. 16432/32467 cut-off events. For 182438/183474 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 298448 event pairs, 2398 based on Foata normal form. 1200/33586 useless extension candidates. Maximal degree in co-relation 121845. Up to 8419 conditions per place. [2024-12-02 12:43:57,248 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 542 selfloop transitions, 224 changer transitions 0/803 dead transitions. [2024-12-02 12:43:57,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 803 transitions, 8544 flow [2024-12-02 12:43:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 12:43:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 12:43:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-12-02 12:43:57,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-12-02 12:43:57,250 INFO L175 Difference]: Start difference. First operand has 188 places, 172 transitions, 1537 flow. Second operand 25 states and 1084 transitions. [2024-12-02 12:43:57,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 803 transitions, 8544 flow [2024-12-02 12:43:58,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 803 transitions, 8517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-12-02 12:43:58,405 INFO L231 Difference]: Finished difference. Result has 231 places, 397 transitions, 4964 flow [2024-12-02 12:43:58,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4964, PETRI_PLACES=231, PETRI_TRANSITIONS=397} [2024-12-02 12:43:58,406 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 165 predicate places. [2024-12-02 12:43:58,406 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 397 transitions, 4964 flow [2024-12-02 12:43:58,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-12-02 12:43:58,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:43:58,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:58,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:43:58,406 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:43:58,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 987458478, now seen corresponding path program 1 times [2024-12-02 12:43:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408162767] [2024-12-02 12:43:58,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:43:58,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:58,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408162767] [2024-12-02 12:43:58,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408162767] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:58,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:58,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:43:58,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026684587] [2024-12-02 12:43:58,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:58,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:43:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:58,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:43:58,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:43:58,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-12-02 12:43:58,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 397 transitions, 4964 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-12-02 12:43:58,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:43:58,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-12-02 12:43:58,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:44:07,200 INFO L124 PetriNetUnfolderBase]: 26614/52277 cut-off events. [2024-12-02 12:44:07,200 INFO L125 PetriNetUnfolderBase]: For 616756/618683 co-relation queries the response was YES. [2024-12-02 12:44:07,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264637 conditions, 52277 events. 26614/52277 cut-off events. For 616756/618683 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 515014 event pairs, 3902 based on Foata normal form. 2241/54414 useless extension candidates. Maximal degree in co-relation 240794. Up to 15795 conditions per place. [2024-12-02 12:44:07,767 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 796 selfloop transitions, 394 changer transitions 0/1227 dead transitions. [2024-12-02 12:44:07,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1227 transitions, 16783 flow [2024-12-02 12:44:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 12:44:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-12-02 12:44:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-12-02 12:44:07,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-12-02 12:44:07,769 INFO L175 Difference]: Start difference. First operand has 231 places, 397 transitions, 4964 flow. Second operand 25 states and 1084 transitions. [2024-12-02 12:44:07,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1227 transitions, 16783 flow [2024-12-02 12:44:14,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1227 transitions, 16683 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-12-02 12:44:14,234 INFO L231 Difference]: Finished difference. Result has 278 places, 701 transitions, 11060 flow [2024-12-02 12:44:14,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4924, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11060, PETRI_PLACES=278, PETRI_TRANSITIONS=701} [2024-12-02 12:44:14,235 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2024-12-02 12:44:14,235 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 701 transitions, 11060 flow [2024-12-02 12:44:14,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-12-02 12:44:14,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:44:14,236 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:14,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 12:44:14,236 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:44:14,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1632167177, now seen corresponding path program 1 times [2024-12-02 12:44:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121862022] [2024-12-02 12:44:14,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:14,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:14,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121862022] [2024-12-02 12:44:14,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121862022] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:44:14,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459109516] [2024-12-02 12:44:14,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:14,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:14,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:44:14,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:44:14,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:44:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:14,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:44:14,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:44:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:14,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:44:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459109516] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:44:14,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:44:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-12-02 12:44:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893577470] [2024-12-02 12:44:14,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:44:14,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:44:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:14,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:44:14,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:44:14,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-12-02 12:44:14,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 701 transitions, 11060 flow. Second operand has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-12-02 12:44:14,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:44:14,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-12-02 12:44:14,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:44:22,311 INFO L124 PetriNetUnfolderBase]: 15935/35664 cut-off events. [2024-12-02 12:44:22,311 INFO L125 PetriNetUnfolderBase]: For 561278/564520 co-relation queries the response was YES. [2024-12-02 12:44:22,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197101 conditions, 35664 events. 15935/35664 cut-off events. For 561278/564520 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 372275 event pairs, 7721 based on Foata normal form. 1457/36811 useless extension candidates. Maximal degree in co-relation 193685. Up to 19710 conditions per place. [2024-12-02 12:44:22,704 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 460 selfloop transitions, 20 changer transitions 113/911 dead transitions. [2024-12-02 12:44:22,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 911 transitions, 15151 flow [2024-12-02 12:44:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:44:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 12:44:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 449 transitions. [2024-12-02 12:44:22,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6414285714285715 [2024-12-02 12:44:22,705 INFO L175 Difference]: Start difference. First operand has 278 places, 701 transitions, 11060 flow. Second operand 10 states and 449 transitions. [2024-12-02 12:44:22,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 911 transitions, 15151 flow [2024-12-02 12:44:29,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 911 transitions, 14805 flow, removed 173 selfloop flow, removed 0 redundant places. [2024-12-02 12:44:29,455 INFO L231 Difference]: Finished difference. Result has 291 places, 706 transitions, 10829 flow [2024-12-02 12:44:29,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10686, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10829, PETRI_PLACES=291, PETRI_TRANSITIONS=706} [2024-12-02 12:44:29,456 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 225 predicate places. [2024-12-02 12:44:29,456 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 706 transitions, 10829 flow [2024-12-02 12:44:29,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-12-02 12:44:29,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:44:29,457 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:29,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:44:29,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:29,657 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:44:29,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -567345569, now seen corresponding path program 2 times [2024-12-02 12:44:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925344201] [2024-12-02 12:44:29,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:44:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:29,674 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:44:29,675 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:44:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:30,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:30,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925344201] [2024-12-02 12:44:30,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925344201] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:44:30,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031766692] [2024-12-02 12:44:30,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:44:30,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:44:30,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:44:30,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:44:30,107 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:44:30,107 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:44:30,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 12:44:30,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:44:30,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 12:44:30,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-12-02 12:44:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:30,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:44:30,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 12:44:30,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-12-02 12:44:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031766692] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:44:30,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:44:30,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-12-02 12:44:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647831151] [2024-12-02 12:44:30,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:44:30,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 12:44:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:30,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 12:44:30,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:44:30,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2024-12-02 12:44:30,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 706 transitions, 10829 flow. Second operand has 26 states, 26 states have (on average 33.69230769230769) internal successors, (876), 26 states have internal predecessors, (876), 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) [2024-12-02 12:44:30,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:44:30,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2024-12-02 12:44:30,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:44:51,584 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([558] L50-->L50-1: Formula: (= v_~counter~0_2 |v_thread1Thread1of1ForFork0_~tmp~0#1_3|) InVars {thread1Thread1of1ForFork0_~tmp~0#1=|v_thread1Thread1of1ForFork0_~tmp~0#1_3|} OutVars{~counter~0=v_~counter~0_2, thread1Thread1of1ForFork0_~tmp~0#1=|v_thread1Thread1of1ForFork0_~tmp~0#1_3|} AuxVars[] AssignedVars[~counter~0][614], [778#true, 283#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), Black: 775#(and (<= 1 |thread2Thread1of1ForFork1_minus_~b#1|) |thread2Thread1of1ForFork1_minus_#t~short17#1|), Black: 781#(<= |thread2Thread1of1ForFork1_minus_~a#1| (+ 2147483647 |thread2Thread1of1ForFork1_minus_~b#1|)), 611#true, Black: 223#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (= ~A~0.offset 0) (<= 0 (+ (select (select |#memory_int#1| ~A~0.base) 0) 2147483648))), Black: 786#(= |thread2Thread1of1ForFork1_~i~1#1| 0), Black: 789#(and (= |thread2Thread1of1ForFork1_#t~post6#1| 0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 468#true, Black: 1034#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)) (<= 0 ~counter~0)), Black: 1020#(and (<= 0 ~counter~0) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), Black: 1011#true, Black: 1018#(<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)), Black: 1024#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 ~counter~0)), Black: 1044#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|))), Black: 1048#(and (<= 0 |thread2Thread1of1ForFork1_~tmp~1#1|) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), 617#true, Black: 1050#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|))), Black: 1038#(and (<= 0 ~counter~0) (<= 0 |thread2Thread1of1ForFork1_~tmp~1#1|) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), Black: 1026#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 ~counter~0)), Black: 1032#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 ~counter~0) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), Black: 1042#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), 62#L50-1true, Black: 1036#(and (<= 0 ~counter~0) (<= 0 |thread2Thread1of1ForFork1_~tmp~1#1|)), Black: 1015#(<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|), 108#true, Black: 1030#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)) (<= 0 ~counter~0)), Black: 1022#(and (<= 0 (+ 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12:44:51,585 INFO L294 olderBase$Statistics]: this new event has 56 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 56 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([586] L59-1-->L57-5: Formula: (= |v_thread2Thread1of1ForFork1_~i~1#1_7| |v_thread2Thread1of1ForFork1_#t~post6#1_1|) InVars {thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|} OutVars{thread2Thread1of1ForFork1_~tmp~1#1=|v_thread2Thread1of1ForFork1_~tmp~1#1_5|, thread2Thread1of1ForFork1_#t~post6#1=|v_thread2Thread1of1ForFork1_#t~post6#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|} AuxVars[] 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|thread2Thread1of1ForFork1_minus_~a#1|), Black: 619#(<= 0 ~counter~0), 372#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), 482#true, Black: 757#(= |thread1Thread1of1ForFork0_~i~0#1| 0), Black: 760#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread1Thread1of1ForFork0_#t~post3#1| 0)), Black: 766#(< |thread2Thread1of1ForFork1_minus_~b#1| (+ 2147483649 |thread2Thread1of1ForFork1_minus_~a#1|))]) [2024-12-02 12:44:51,585 INFO L294 olderBase$Statistics]: this new event has 56 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 56 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2024-12-02 12:44:51,585 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2024-12-02 12:44:52,298 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([558] L50-->L50-1: Formula: (= v_~counter~0_2 |v_thread1Thread1of1ForFork0_~tmp~0#1_3|) InVars {thread1Thread1of1ForFork0_~tmp~0#1=|v_thread1Thread1of1ForFork0_~tmp~0#1_3|} OutVars{~counter~0=v_~counter~0_2, thread1Thread1of1ForFork0_~tmp~0#1=|v_thread1Thread1of1ForFork0_~tmp~0#1_3|} AuxVars[] AssignedVars[~counter~0][614], [778#true, 283#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), Black: 775#(and (<= 1 |thread2Thread1of1ForFork1_minus_~b#1|) |thread2Thread1of1ForFork1_minus_#t~short17#1|), Black: 781#(<= |thread2Thread1of1ForFork1_minus_~a#1| (+ 2147483647 |thread2Thread1of1ForFork1_minus_~b#1|)), 611#true, Black: 786#(= |thread2Thread1of1ForFork1_~i~1#1| 0), Black: 223#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (= ~A~0.offset 0) (<= 0 (+ (select (select |#memory_int#1| ~A~0.base) 0) 2147483648))), Black: 789#(and (= |thread2Thread1of1ForFork1_#t~post6#1| 0) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 468#true, Black: 1034#(and (<= 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|thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|) 0)), Black: 959#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 ~counter~0)), Black: 621#(<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|), Black: 619#(<= 0 ~counter~0), 482#true, 372#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), Black: 757#(= |thread1Thread1of1ForFork0_~i~0#1| 0), 13#L59-1true, Black: 760#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread1Thread1of1ForFork0_#t~post3#1| 0)), Black: 766#(< |thread2Thread1of1ForFork1_minus_~b#1| (+ 2147483649 |thread2Thread1of1ForFork1_minus_~a#1|))]) [2024-12-02 12:44:52,299 INFO L294 olderBase$Statistics]: this new event has 57 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 57 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([586] L59-1-->L57-5: Formula: (= |v_thread2Thread1of1ForFork1_~i~1#1_7| |v_thread2Thread1of1ForFork1_#t~post6#1_1|) InVars {thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|} OutVars{thread2Thread1of1ForFork1_~tmp~1#1=|v_thread2Thread1of1ForFork1_~tmp~1#1_5|, thread2Thread1of1ForFork1_#t~post6#1=|v_thread2Thread1of1ForFork1_#t~post6#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_~tmp~1#1, thread2Thread1of1ForFork1_#t~post6#1][2070], [778#true, 283#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), Black: 775#(and (<= 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|thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)), 71#true, Black: 969#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)) (<= 0 ~counter~0)), Black: 957#(and (<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)) (<= 0 ~counter~0)), Black: 953#(<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|), 763#true, Black: 961#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 ~counter~0)), Black: 950#(<= 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|)), Black: 967#(and (<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|) (<= 0 ~counter~0) (or (not |thread1Thread1of1ForFork0_plus_#t~short18#1|) (< 0 (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1| 1)))), Black: 751#(and (<= |thread2Thread1of1ForFork1_minus_~a#1| |thread2Thread1of1ForFork1_minus_~b#1|) (<= |thread2Thread1of1ForFork1_minus_~a#1| 0)), Black: 981#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 |thread1Thread1of1ForFork0_~tmp~0#1|)), Black: 497#(and (<= |thread1Thread1of1ForFork0_plus_~a#1| 0) (<= (+ |thread1Thread1of1ForFork0_plus_~b#1| |thread1Thread1of1ForFork0_plus_~a#1|) 0)), Black: 959#(and (or (< |thread2Thread1of1ForFork1_minus_~b#1| (+ |thread2Thread1of1ForFork1_minus_~a#1| 1)) (not |thread2Thread1of1ForFork1_minus_#t~short16#1|)) (<= 0 ~counter~0)), Black: 621#(<= |thread2Thread1of1ForFork1_minus_~b#1| |thread2Thread1of1ForFork1_minus_~a#1|), Black: 619#(<= 0 ~counter~0), 482#true, 372#(and (= ~A~0.offset 0) (<= (select (select |#memory_int#1| ~A~0.base) 0) 2147483647)), Black: 757#(= |thread1Thread1of1ForFork0_~i~0#1| 0), Black: 760#(and (= |thread1Thread1of1ForFork0_~i~0#1| 0) (= |thread1Thread1of1ForFork0_#t~post3#1| 0)), Black: 766#(< |thread2Thread1of1ForFork1_minus_~b#1| (+ 2147483649 |thread2Thread1of1ForFork1_minus_~a#1|))]) [2024-12-02 12:44:52,299 INFO L294 olderBase$Statistics]: this new event has 57 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 57 ancestors and is cut-off event [2024-12-02 12:44:52,299 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2024-12-02 12:44:57,608 INFO L124 PetriNetUnfolderBase]: 50205/106892 cut-off events. [2024-12-02 12:44:57,608 INFO L125 PetriNetUnfolderBase]: For 1687877/1704092 co-relation queries the response was YES. [2024-12-02 12:44:58,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590471 conditions, 106892 events. 50205/106892 cut-off events. For 1687877/1704092 co-relation queries the response was YES. Maximal size of possible extension queue 2681. Compared 1229813 event pairs, 8007 based on Foata normal form. 5705/111779 useless extension candidates. Maximal degree in co-relation 577518. Up to 12839 conditions per place. [2024-12-02 12:44:59,247 INFO L140 encePairwiseOnDemand]: 56/70 looper letters, 2009 selfloop transitions, 337 changer transitions 125/2787 dead transitions. [2024-12-02 12:44:59,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 2787 transitions, 46340 flow [2024-12-02 12:44:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 12:44:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-12-02 12:44:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1591 transitions. [2024-12-02 12:44:59,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6493877551020408 [2024-12-02 12:44:59,250 INFO L175 Difference]: Start difference. First operand has 291 places, 706 transitions, 10829 flow. Second operand 35 states and 1591 transitions. [2024-12-02 12:44:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 2787 transitions, 46340 flow [2024-12-02 12:45:39,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 2787 transitions, 46307 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-12-02 12:45:39,416 INFO L231 Difference]: Finished difference. Result has 326 places, 951 transitions, 15750 flow [2024-12-02 12:45:39,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10806, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=15750, PETRI_PLACES=326, PETRI_TRANSITIONS=951} [2024-12-02 12:45:39,417 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 260 predicate places. [2024-12-02 12:45:39,418 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 951 transitions, 15750 flow [2024-12-02 12:45:39,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 33.69230769230769) internal successors, (876), 26 states have internal predecessors, (876), 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) [2024-12-02 12:45:39,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:45:39,418 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:45:39,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:45:39,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acab7d7a-ecf6-4a38-87ce-b7fea536483d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:45:39,619 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:45:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:45:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -839422708, now seen corresponding path program 1 times [2024-12-02 12:45:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:45:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606805321] [2024-12-02 12:45:39,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:45:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606805321] [2024-12-02 12:45:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606805321] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:45:39,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:45:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:45:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128571519] [2024-12-02 12:45:39,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:45:39,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:45:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:45:39,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:45:39,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:45:39,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-12-02 12:45:39,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 951 transitions, 15750 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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) [2024-12-02 12:45:39,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:45:39,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-12-02 12:45:39,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:47:13,495 INFO L124 PetriNetUnfolderBase]: 161143/299066 cut-off events. [2024-12-02 12:47:13,495 INFO L125 PetriNetUnfolderBase]: For 5236370/5243295 co-relation queries the response was YES. [2024-12-02 12:47:17,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738903 conditions, 299066 events. 161143/299066 cut-off events. For 5236370/5243295 co-relation queries the response was YES. Maximal size of possible extension queue 6774. Compared 3390229 event pairs, 18488 based on Foata normal form. 7847/306282 useless extension candidates. Maximal degree in co-relation 1702765. Up to 81863 conditions per place. [2024-12-02 12:47:18,818 INFO L140 encePairwiseOnDemand]: 48/70 looper letters, 2374 selfloop transitions, 1426 changer transitions 75/4016 dead transitions. [2024-12-02 12:47:18,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 4016 transitions, 70338 flow [2024-12-02 12:47:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 12:47:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-12-02 12:47:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1957 transitions. [2024-12-02 12:47:18,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45831381733021076 [2024-12-02 12:47:18,831 INFO L175 Difference]: Start difference. First operand has 326 places, 951 transitions, 15750 flow. Second operand 61 states and 1957 transitions. [2024-12-02 12:47:18,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 4016 transitions, 70338 flow [2024-12-02 12:54:08,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 4016 transitions, 66978 flow, removed 922 selfloop flow, removed 18 redundant places. [2024-12-02 12:54:08,275 INFO L231 Difference]: Finished difference. Result has 417 places, 2400 transitions, 45788 flow [2024-12-02 12:54:08,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=15099, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=45788, PETRI_PLACES=417, PETRI_TRANSITIONS=2400} [2024-12-02 12:54:08,277 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 351 predicate places. [2024-12-02 12:54:08,278 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 2400 transitions, 45788 flow [2024-12-02 12:54:08,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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) [2024-12-02 12:54:08,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:54:08,279 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:54:08,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 12:54:08,279 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-12-02 12:54:08,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -674361523, now seen corresponding path program 1 times [2024-12-02 12:54:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471905681] [2024-12-02 12:54:08,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:54:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471905681] [2024-12-02 12:54:08,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471905681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:08,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:08,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:54:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041221212] [2024-12-02 12:54:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:08,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:54:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:08,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:54:08,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:54:08,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-12-02 12:54:08,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 2400 transitions, 45788 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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) [2024-12-02 12:54:08,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:54:08,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-12-02 12:54:08,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand