./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB --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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:24:39,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:24:39,424 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:24:39,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:24:39,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:24:39,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:24:39,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:24:39,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:24:39,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:24:39,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:24:39,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:24:39,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:24:39,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:24:39,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:24:39,461 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:24:39,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:24:39,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:24:39,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:24:39,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:24:39,462 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:24:39,463 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:39,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:39,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:24:39,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:39,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:24:39,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:24:39,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:24:39,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:24:39,466 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_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-27 20:24:39,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:24:39,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:24:39,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:24:39,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:24:39,765 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:24:39,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:24:43,378 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/data/ab2fb2be0/aa216da6bba7444d8292f5849d06394b/FLAG22f9a4dfb [2024-11-27 20:24:43,657 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:24:43,658 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:24:43,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/data/ab2fb2be0/aa216da6bba7444d8292f5849d06394b/FLAG22f9a4dfb [2024-11-27 20:24:43,723 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/data/ab2fb2be0/aa216da6bba7444d8292f5849d06394b [2024-11-27 20:24:43,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:24:43,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:24:43,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:43,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:24:43,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:24:43,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:43" (1/1) ... [2024-11-27 20:24:43,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248d4b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:43, skipping insertion in model container [2024-11-27 20:24:43,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:24:43" (1/1) ... [2024-11-27 20:24:43,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:24:43,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:43,973 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:24:43,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:24:44,013 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:24:44,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44 WrapperNode [2024-11-27 20:24:44,014 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:24:44,015 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:44,015 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:24:44,015 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:24:44,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,049 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-27 20:24:44,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:24:44,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:24:44,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:24:44,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:24:44,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,078 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:24:44,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,083 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:24:44,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:24:44,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:24:44,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:24:44,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (1/1) ... [2024-11-27 20:24:44,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:24:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:44,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:24:44,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:24:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:24:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:24:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:24:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:24:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:24:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:24:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:24:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:24:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:24:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:24:44,180 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:24:44,265 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:24:44,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:24:44,521 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:24:44,521 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:24:44,727 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:24:44,727 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:24:44,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:44 BoogieIcfgContainer [2024-11-27 20:24:44,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:24:44,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:24:44,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:24:44,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:24:44,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:24:43" (1/3) ... [2024-11-27 20:24:44,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1475c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:44, skipping insertion in model container [2024-11-27 20:24:44,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:24:44" (2/3) ... [2024-11-27 20:24:44,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1475c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:24:44, skipping insertion in model container [2024-11-27 20:24:44,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:24:44" (3/3) ... [2024-11-27 20:24:44,738 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-27 20:24:44,752 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:24:44,754 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr-alt.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2024-11-27 20:24:44,754 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:24:44,805 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:24:44,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-27 20:24:44,892 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-27 20:24:44,896 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:24:44,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 66 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-27 20:24:44,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-27 20:24:44,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2024-11-27 20:24:44,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:24:44,940 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;@1af4098c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:24:44,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-27 20:24:44,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:24:44,952 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-27 20:24:44,952 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 20:24:44,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:44,953 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-27 20:24:44,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:44,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 280359154, now seen corresponding path program 1 times [2024-11-27 20:24:44,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:44,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961194907] [2024-11-27 20:24:44,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:44,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961194907] [2024-11-27 20:24:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961194907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:24:45,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244833502] [2024-11-27 20:24:45,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:45,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:45,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:45,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:45,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:45,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:45,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:45,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:45,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:45,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:45,538 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2024-11-27 20:24:45,538 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-27 20:24:45,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1253 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2024-11-27 20:24:45,545 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-27 20:24:45,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2024-11-27 20:24:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:24:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-27 20:24:45,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-27 20:24:45,561 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-27 20:24:45,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2024-11-27 20:24:45,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:24:45,574 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2024-11-27 20:24:45,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-27 20:24:45,580 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-27 20:24:45,583 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2024-11-27 20:24:45,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:45,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:45,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:45,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:24:45,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:45,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1157782027, now seen corresponding path program 1 times [2024-11-27 20:24:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122850746] [2024-11-27 20:24:45,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122850746] [2024-11-27 20:24:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122850746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:24:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370457608] [2024-11-27 20:24:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:45,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:45,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:45,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:45,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-27 20:24:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:45,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:45,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-27 20:24:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:45,918 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-11-27 20:24:45,918 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-27 20:24:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2252 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2024-11-27 20:24:45,923 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-27 20:24:45,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2024-11-27 20:24:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-27 20:24:45,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-27 20:24:45,925 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2024-11-27 20:24:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2024-11-27 20:24:45,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:45,928 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-11-27 20:24:45,928 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-11-27 20:24:45,929 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-11-27 20:24:45,929 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-11-27 20:24:45,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:45,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:45,929 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:45,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:24:45,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:45,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1553378187, now seen corresponding path program 1 times [2024-11-27 20:24:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246082988] [2024-11-27 20:24:45,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246082988] [2024-11-27 20:24:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246082988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:46,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:46,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:24:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679933843] [2024-11-27 20:24:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:46,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:46,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:46,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:46,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:46,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:46,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:46,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:46,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:46,228 INFO L124 PetriNetUnfolderBase]: 240/463 cut-off events. [2024-11-27 20:24:46,228 INFO L125 PetriNetUnfolderBase]: For 164/213 co-relation queries the response was YES. [2024-11-27 20:24:46,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 463 events. 240/463 cut-off events. For 164/213 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2305 event pairs, 129 based on Foata normal form. 17/391 useless extension candidates. Maximal degree in co-relation 708. Up to 284 conditions per place. [2024-11-27 20:24:46,236 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-27 20:24:46,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 236 flow [2024-11-27 20:24:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:24:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-27 20:24:46,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-27 20:24:46,238 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 3 states and 66 transitions. [2024-11-27 20:24:46,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 236 flow [2024-11-27 20:24:46,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:46,240 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 118 flow [2024-11-27 20:24:46,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-27 20:24:46,243 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-11-27 20:24:46,244 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 118 flow [2024-11-27 20:24:46,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:46,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:46,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:46,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:24:46,244 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:46,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:46,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1384797383, now seen corresponding path program 1 times [2024-11-27 20:24:46,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:46,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493271222] [2024-11-27 20:24:46,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:46,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:46,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:46,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493271222] [2024-11-27 20:24:46,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493271222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:46,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:46,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:24:46,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857126677] [2024-11-27 20:24:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:46,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:46,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:46,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:46,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:46,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:46,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:46,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:46,627 INFO L124 PetriNetUnfolderBase]: 303/680 cut-off events. [2024-11-27 20:24:46,627 INFO L125 PetriNetUnfolderBase]: For 311/315 co-relation queries the response was YES. [2024-11-27 20:24:46,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 680 events. 303/680 cut-off events. For 311/315 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3589 event pairs, 74 based on Foata normal form. 22/613 useless extension candidates. Maximal degree in co-relation 565. Up to 233 conditions per place. [2024-11-27 20:24:46,636 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2024-11-27 20:24:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 316 flow [2024-11-27 20:24:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-27 20:24:46,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-27 20:24:46,641 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 118 flow. Second operand 4 states and 92 transitions. [2024-11-27 20:24:46,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 316 flow [2024-11-27 20:24:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:46,648 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 184 flow [2024-11-27 20:24:46,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-27 20:24:46,652 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2024-11-27 20:24:46,652 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 184 flow [2024-11-27 20:24:46,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:46,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:46,653 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:46,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:24:46,653 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:46,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1398291392, now seen corresponding path program 1 times [2024-11-27 20:24:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620529501] [2024-11-27 20:24:46,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:46,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620529501] [2024-11-27 20:24:46,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620529501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:46,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004259488] [2024-11-27 20:24:46,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:46,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:46,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:46,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:46,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:24:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:46,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:24:46,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:46,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:24:46,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004259488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:46,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:24:46,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-27 20:24:46,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421670800] [2024-11-27 20:24:46,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:46,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:46,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:46,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:46,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:46,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:46,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:46,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:46,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:47,148 INFO L124 PetriNetUnfolderBase]: 359/804 cut-off events. [2024-11-27 20:24:47,148 INFO L125 PetriNetUnfolderBase]: For 1105/1115 co-relation queries the response was YES. [2024-11-27 20:24:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 804 events. 359/804 cut-off events. For 1105/1115 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4281 event pairs, 82 based on Foata normal form. 56/813 useless extension candidates. Maximal degree in co-relation 978. Up to 330 conditions per place. [2024-11-27 20:24:47,158 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-11-27 20:24:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 363 flow [2024-11-27 20:24:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-27 20:24:47,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-27 20:24:47,160 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 184 flow. Second operand 4 states and 79 transitions. [2024-11-27 20:24:47,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 363 flow [2024-11-27 20:24:47,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:47,173 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 296 flow [2024-11-27 20:24:47,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-11-27 20:24:47,174 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-11-27 20:24:47,174 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 296 flow [2024-11-27 20:24:47,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:47,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:47,175 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:47,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:24:47,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:47,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:47,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash 425493661, now seen corresponding path program 1 times [2024-11-27 20:24:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:47,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856360729] [2024-11-27 20:24:47,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856360729] [2024-11-27 20:24:47,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856360729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:47,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493211623] [2024-11-27 20:24:47,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:47,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:47,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:47,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:47,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:24:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:47,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:24:47,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:47,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:47,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493211623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:47,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:47,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:24:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094688154] [2024-11-27 20:24:47,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:47,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:47,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:47,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:47,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-27 20:24:47,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:47,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:47,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-27 20:24:47,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:47,896 INFO L124 PetriNetUnfolderBase]: 402/759 cut-off events. [2024-11-27 20:24:47,897 INFO L125 PetriNetUnfolderBase]: For 1390/1433 co-relation queries the response was YES. [2024-11-27 20:24:47,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 759 events. 402/759 cut-off events. For 1390/1433 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3655 event pairs, 107 based on Foata normal form. 15/692 useless extension candidates. Maximal degree in co-relation 968. Up to 397 conditions per place. [2024-11-27 20:24:47,904 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-11-27 20:24:47,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 452 flow [2024-11-27 20:24:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-27 20:24:47,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-27 20:24:47,906 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 296 flow. Second operand 4 states and 69 transitions. [2024-11-27 20:24:47,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 452 flow [2024-11-27 20:24:47,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 435 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:47,912 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 266 flow [2024-11-27 20:24:47,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=266, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-27 20:24:47,913 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-11-27 20:24:47,913 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 266 flow [2024-11-27 20:24:47,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:47,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:47,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:47,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:24:48,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:48,117 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:48,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:48,118 INFO L85 PathProgramCache]: Analyzing trace with hash -649564914, now seen corresponding path program 1 times [2024-11-27 20:24:48,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:48,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313156999] [2024-11-27 20:24:48,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:48,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313156999] [2024-11-27 20:24:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313156999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574678482] [2024-11-27 20:24:48,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:48,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:48,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:48,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:24:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:48,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:24:48,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:48,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574678482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:48,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-27 20:24:48,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803939935] [2024-11-27 20:24:48,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:48,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:24:48,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:48,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:24:48,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:24:48,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:48,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:48,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:48,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:48,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:48,752 INFO L124 PetriNetUnfolderBase]: 267/586 cut-off events. [2024-11-27 20:24:48,752 INFO L125 PetriNetUnfolderBase]: For 1409/1427 co-relation queries the response was YES. [2024-11-27 20:24:48,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845 conditions, 586 events. 267/586 cut-off events. For 1409/1427 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2881 event pairs, 11 based on Foata normal form. 38/613 useless extension candidates. Maximal degree in co-relation 608. Up to 217 conditions per place. [2024-11-27 20:24:48,758 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 44 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-11-27 20:24:48,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 436 flow [2024-11-27 20:24:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:24:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:24:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-11-27 20:24:48,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-27 20:24:48,760 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 266 flow. Second operand 7 states and 126 transitions. [2024-11-27 20:24:48,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 436 flow [2024-11-27 20:24:48,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 419 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-27 20:24:48,765 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 237 flow [2024-11-27 20:24:48,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-27 20:24:48,766 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2024-11-27 20:24:48,766 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 237 flow [2024-11-27 20:24:48,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:48,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:48,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:48,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:48,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:48,971 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:48,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1310714370, now seen corresponding path program 1 times [2024-11-27 20:24:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017193656] [2024-11-27 20:24:48,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017193656] [2024-11-27 20:24:49,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017193656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:49,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:49,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:24:49,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695650816] [2024-11-27 20:24:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:49,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:49,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:49,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:49,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:49,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:49,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:49,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:49,219 INFO L124 PetriNetUnfolderBase]: 245/499 cut-off events. [2024-11-27 20:24:49,220 INFO L125 PetriNetUnfolderBase]: For 1313/1341 co-relation queries the response was YES. [2024-11-27 20:24:49,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 499 events. 245/499 cut-off events. For 1313/1341 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2271 event pairs, 117 based on Foata normal form. 18/494 useless extension candidates. Maximal degree in co-relation 858. Up to 356 conditions per place. [2024-11-27 20:24:49,227 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 35 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-11-27 20:24:49,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 374 flow [2024-11-27 20:24:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-27 20:24:49,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-27 20:24:49,228 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 237 flow. Second operand 4 states and 69 transitions. [2024-11-27 20:24:49,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 374 flow [2024-11-27 20:24:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 340 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-27 20:24:49,234 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 209 flow [2024-11-27 20:24:49,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-27 20:24:49,236 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2024-11-27 20:24:49,236 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 209 flow [2024-11-27 20:24:49,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:49,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:49,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:49,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:24:49,238 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:49,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash -566725309, now seen corresponding path program 1 times [2024-11-27 20:24:49,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:49,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881747081] [2024-11-27 20:24:49,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:49,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:49,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881747081] [2024-11-27 20:24:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881747081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058476606] [2024-11-27 20:24:49,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:49,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:49,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:49,365 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:49,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:24:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:49,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:24:49,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:49,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:24:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058476606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:49,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:24:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:24:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171115519] [2024-11-27 20:24:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:49,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:24:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:49,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:24:49,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:24:49,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-27 20:24:49,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:49,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:49,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-27 20:24:49,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:49,764 INFO L124 PetriNetUnfolderBase]: 330/667 cut-off events. [2024-11-27 20:24:49,764 INFO L125 PetriNetUnfolderBase]: For 1193/1212 co-relation queries the response was YES. [2024-11-27 20:24:49,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 667 events. 330/667 cut-off events. For 1193/1212 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3150 event pairs, 42 based on Foata normal form. 20/659 useless extension candidates. Maximal degree in co-relation 777. Up to 208 conditions per place. [2024-11-27 20:24:49,771 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2024-11-27 20:24:49,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 567 flow [2024-11-27 20:24:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:24:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:24:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-27 20:24:49,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 20:24:49,772 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 209 flow. Second operand 6 states and 96 transitions. [2024-11-27 20:24:49,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 567 flow [2024-11-27 20:24:49,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 561 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:24:49,776 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 211 flow [2024-11-27 20:24:49,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-11-27 20:24:49,777 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2024-11-27 20:24:49,778 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 211 flow [2024-11-27 20:24:49,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:49,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:49,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-27 20:24:49,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:24:49,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:49,979 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:49,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash -388615089, now seen corresponding path program 1 times [2024-11-27 20:24:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:49,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780095672] [2024-11-27 20:24:49,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:49,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:50,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780095672] [2024-11-27 20:24:50,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780095672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:50,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324240846] [2024-11-27 20:24:50,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:50,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:50,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:50,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:24:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:50,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:24:50,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324240846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:50,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:50,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:24:50,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122268438] [2024-11-27 20:24:50,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:50,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:24:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:50,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:24:50,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:24:50,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-27 20:24:50,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:50,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:50,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-27 20:24:50,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:50,694 INFO L124 PetriNetUnfolderBase]: 680/1320 cut-off events. [2024-11-27 20:24:50,694 INFO L125 PetriNetUnfolderBase]: For 2792/2831 co-relation queries the response was YES. [2024-11-27 20:24:50,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1320 events. 680/1320 cut-off events. For 2792/2831 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6587 event pairs, 111 based on Foata normal form. 60/1370 useless extension candidates. Maximal degree in co-relation 1672. Up to 464 conditions per place. [2024-11-27 20:24:50,706 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 114 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2024-11-27 20:24:50,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 133 transitions, 1033 flow [2024-11-27 20:24:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:24:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:24:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-27 20:24:50,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-27 20:24:50,708 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 211 flow. Second operand 10 states and 172 transitions. [2024-11-27 20:24:50,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 133 transitions, 1033 flow [2024-11-27 20:24:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 1006 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-27 20:24:50,717 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 280 flow [2024-11-27 20:24:50,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-27 20:24:50,718 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2024-11-27 20:24:50,718 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 280 flow [2024-11-27 20:24:50,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:50,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:50,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:50,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:50,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:50,919 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:50,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1185843675, now seen corresponding path program 1 times [2024-11-27 20:24:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:50,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151648509] [2024-11-27 20:24:50,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:50,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:50,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151648509] [2024-11-27 20:24:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151648509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:50,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530208951] [2024-11-27 20:24:50,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:50,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:50,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:50,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:50,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:24:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:51,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:24:51,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:51,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530208951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:51,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-27 20:24:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448906224] [2024-11-27 20:24:51,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:51,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:24:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:51,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:24:51,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:24:51,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:51,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 280 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:51,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:51,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:51,509 INFO L124 PetriNetUnfolderBase]: 591/1347 cut-off events. [2024-11-27 20:24:51,509 INFO L125 PetriNetUnfolderBase]: For 3688/3730 co-relation queries the response was YES. [2024-11-27 20:24:51,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1347 events. 591/1347 cut-off events. For 3688/3730 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7522 event pairs, 49 based on Foata normal form. 212/1529 useless extension candidates. Maximal degree in co-relation 2790. Up to 253 conditions per place. [2024-11-27 20:24:51,521 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-11-27 20:24:51,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 830 flow [2024-11-27 20:24:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:24:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 20:24:51,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-11-27 20:24:51,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-27 20:24:51,523 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 280 flow. Second operand 8 states and 160 transitions. [2024-11-27 20:24:51,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 830 flow [2024-11-27 20:24:51,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 111 transitions, 801 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-27 20:24:51,536 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 423 flow [2024-11-27 20:24:51,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-27 20:24:51,537 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-27 20:24:51,537 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 423 flow [2024-11-27 20:24:51,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:51,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:51,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:51,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:51,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:51,738 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:51,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2127893162, now seen corresponding path program 1 times [2024-11-27 20:24:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138272977] [2024-11-27 20:24:51,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:24:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138272977] [2024-11-27 20:24:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138272977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:24:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476799712] [2024-11-27 20:24:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:51,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:24:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:51,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:24:51,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:24:51,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:52,057 INFO L124 PetriNetUnfolderBase]: 539/1196 cut-off events. [2024-11-27 20:24:52,057 INFO L125 PetriNetUnfolderBase]: For 3784/3808 co-relation queries the response was YES. [2024-11-27 20:24:52,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 1196 events. 539/1196 cut-off events. For 3784/3808 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6500 event pairs, 290 based on Foata normal form. 36/1205 useless extension candidates. Maximal degree in co-relation 3255. Up to 815 conditions per place. [2024-11-27 20:24:52,070 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 53 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-27 20:24:52,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 670 flow [2024-11-27 20:24:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:24:52,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:24:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-27 20:24:52,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-27 20:24:52,071 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 423 flow. Second operand 4 states and 68 transitions. [2024-11-27 20:24:52,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 670 flow [2024-11-27 20:24:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 74 transitions, 647 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-27 20:24:52,084 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 434 flow [2024-11-27 20:24:52,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-27 20:24:52,085 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2024-11-27 20:24:52,085 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 434 flow [2024-11-27 20:24:52,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:52,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:52,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:24:52,085 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:52,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1011125216, now seen corresponding path program 1 times [2024-11-27 20:24:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045160083] [2024-11-27 20:24:52,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045160083] [2024-11-27 20:24:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045160083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:52,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:52,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:24:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238467573] [2024-11-27 20:24:52,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:52,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:52,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-27 20:24:52,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:52,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-27 20:24:52,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:52,334 INFO L124 PetriNetUnfolderBase]: 539/1159 cut-off events. [2024-11-27 20:24:52,334 INFO L125 PetriNetUnfolderBase]: For 4208/4244 co-relation queries the response was YES. [2024-11-27 20:24:52,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 1159 events. 539/1159 cut-off events. For 4208/4244 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6111 event pairs, 338 based on Foata normal form. 9/1146 useless extension candidates. Maximal degree in co-relation 3363. Up to 912 conditions per place. [2024-11-27 20:24:52,344 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 43 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-11-27 20:24:52,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 520 flow [2024-11-27 20:24:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:24:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-27 20:24:52,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-27 20:24:52,345 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 434 flow. Second operand 3 states and 44 transitions. [2024-11-27 20:24:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 520 flow [2024-11-27 20:24:52,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 504 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:24:52,355 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 418 flow [2024-11-27 20:24:52,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-27 20:24:52,356 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-27 20:24:52,356 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 418 flow [2024-11-27 20:24:52,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:52,357 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] [2024-11-27 20:24:52,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:24:52,357 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:52,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1280110354, now seen corresponding path program 1 times [2024-11-27 20:24:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025564148] [2024-11-27 20:24:52,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:24:52,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025564148] [2024-11-27 20:24:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025564148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 20:24:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272653357] [2024-11-27 20:24:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:24:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:24:52,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:24:52,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-27 20:24:52,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:52,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-27 20:24:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:52,560 INFO L124 PetriNetUnfolderBase]: 539/1146 cut-off events. [2024-11-27 20:24:52,560 INFO L125 PetriNetUnfolderBase]: For 3848/3884 co-relation queries the response was YES. [2024-11-27 20:24:52,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 1146 events. 539/1146 cut-off events. For 3848/3884 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6011 event pairs, 338 based on Foata normal form. 9/1129 useless extension candidates. Maximal degree in co-relation 4343. Up to 903 conditions per place. [2024-11-27 20:24:52,569 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 36 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-11-27 20:24:52,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 502 flow [2024-11-27 20:24:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:24:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:24:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-27 20:24:52,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-27 20:24:52,571 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 418 flow. Second operand 3 states and 43 transitions. [2024-11-27 20:24:52,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 502 flow [2024-11-27 20:24:52,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:52,579 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 389 flow [2024-11-27 20:24:52,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-11-27 20:24:52,580 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2024-11-27 20:24:52,580 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 389 flow [2024-11-27 20:24:52,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:52,580 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-27 20:24:52,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:24:52,580 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:52,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1787896435, now seen corresponding path program 1 times [2024-11-27 20:24:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641919713] [2024-11-27 20:24:52,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641919713] [2024-11-27 20:24:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641919713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14651725] [2024-11-27 20:24:52,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:52,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:52,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:24:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:52,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:24:52,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14651725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:52,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:52,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:24:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195547627] [2024-11-27 20:24:52,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:52,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:24:52,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:52,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:24:52,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:24:52,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:52,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 389 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:52,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:52,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:53,337 INFO L124 PetriNetUnfolderBase]: 739/1895 cut-off events. [2024-11-27 20:24:53,338 INFO L125 PetriNetUnfolderBase]: For 7177/7265 co-relation queries the response was YES. [2024-11-27 20:24:53,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1895 events. 739/1895 cut-off events. For 7177/7265 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11189 event pairs, 31 based on Foata normal form. 72/1956 useless extension candidates. Maximal degree in co-relation 6961. Up to 279 conditions per place. [2024-11-27 20:24:53,363 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 96 selfloop transitions, 53 changer transitions 0/159 dead transitions. [2024-11-27 20:24:53,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 1450 flow [2024-11-27 20:24:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:24:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 20:24:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-11-27 20:24:53,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-27 20:24:53,366 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 389 flow. Second operand 13 states and 248 transitions. [2024-11-27 20:24:53,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 1450 flow [2024-11-27 20:24:53,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 159 transitions, 1449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:24:53,381 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 1042 flow [2024-11-27 20:24:53,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1042, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-11-27 20:24:53,382 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2024-11-27 20:24:53,382 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 1042 flow [2024-11-27 20:24:53,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:53,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:53,383 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-27 20:24:53,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:24:53,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:24:53,583 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:53,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1333557341, now seen corresponding path program 2 times [2024-11-27 20:24:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023863107] [2024-11-27 20:24:53,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:53,592 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:53,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:24:53,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:53,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023863107] [2024-11-27 20:24:53,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023863107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:53,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29957873] [2024-11-27 20:24:53,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:53,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:53,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:53,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:24:53,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:24:53,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:53,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:24:53,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:24:53,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:24:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29957873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:53,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:53,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:24:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250584744] [2024-11-27 20:24:53,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:53,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:24:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:53,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:24:53,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:24:53,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-27 20:24:53,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 1042 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:53,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:53,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-27 20:24:53,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:54,242 INFO L124 PetriNetUnfolderBase]: 1447/2790 cut-off events. [2024-11-27 20:24:54,243 INFO L125 PetriNetUnfolderBase]: For 16588/16679 co-relation queries the response was YES. [2024-11-27 20:24:54,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11627 conditions, 2790 events. 1447/2790 cut-off events. For 16588/16679 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13819 event pairs, 237 based on Foata normal form. 136/2924 useless extension candidates. Maximal degree in co-relation 11593. Up to 1206 conditions per place. [2024-11-27 20:24:54,270 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 151 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-27 20:24:54,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 167 transitions, 2478 flow [2024-11-27 20:24:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:24:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:24:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-27 20:24:54,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-11-27 20:24:54,271 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 1042 flow. Second operand 5 states and 63 transitions. [2024-11-27 20:24:54,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 167 transitions, 2478 flow [2024-11-27 20:24:54,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 2390 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-11-27 20:24:54,303 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 1024 flow [2024-11-27 20:24:54,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1024, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-11-27 20:24:54,303 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2024-11-27 20:24:54,304 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 1024 flow [2024-11-27 20:24:54,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:54,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:54,304 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-27 20:24:54,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:24:54,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:54,505 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:54,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash 874079411, now seen corresponding path program 2 times [2024-11-27 20:24:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:54,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870159812] [2024-11-27 20:24:54,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:54,525 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:54,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:54,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870159812] [2024-11-27 20:24:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870159812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579220490] [2024-11-27 20:24:54,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:24:54,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:54,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:54,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:54,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:24:54,828 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:24:54,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:54,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:24:54,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:54,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579220490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:55,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:55,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:24:55,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779386888] [2024-11-27 20:24:55,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:55,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 20:24:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:55,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 20:24:55,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:24:55,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:55,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 1024 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:55,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:55,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:55,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:24:56,265 INFO L124 PetriNetUnfolderBase]: 1903/4631 cut-off events. [2024-11-27 20:24:56,265 INFO L125 PetriNetUnfolderBase]: For 39018/39274 co-relation queries the response was YES. [2024-11-27 20:24:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 4631 events. 1903/4631 cut-off events. For 39018/39274 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 27612 event pairs, 73 based on Foata normal form. 156/4774 useless extension candidates. Maximal degree in co-relation 19308. Up to 911 conditions per place. [2024-11-27 20:24:56,384 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 170 selfloop transitions, 225 changer transitions 0/405 dead transitions. [2024-11-27 20:24:56,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 405 transitions, 4678 flow [2024-11-27 20:24:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:24:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-27 20:24:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 488 transitions. [2024-11-27 20:24:56,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-27 20:24:56,387 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 1024 flow. Second operand 25 states and 488 transitions. [2024-11-27 20:24:56,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 405 transitions, 4678 flow [2024-11-27 20:24:56,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 405 transitions, 4628 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:24:56,424 INFO L231 Difference]: Finished difference. Result has 120 places, 262 transitions, 4088 flow [2024-11-27 20:24:56,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4088, PETRI_PLACES=120, PETRI_TRANSITIONS=262} [2024-11-27 20:24:56,425 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2024-11-27 20:24:56,425 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 262 transitions, 4088 flow [2024-11-27 20:24:56,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:56,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:24:56,425 INFO L206 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-27 20:24:56,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:24:56,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:24:56,626 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:24:56,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1539676467, now seen corresponding path program 3 times [2024-11-27 20:24:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:56,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135711283] [2024-11-27 20:24:56,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:56,684 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:24:56,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135711283] [2024-11-27 20:24:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135711283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004333084] [2024-11-27 20:24:57,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:24:57,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:57,424 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:57,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:24:57,526 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 20:24:57,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:24:57,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 20:24:57,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:24:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:57,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:24:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:24:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004333084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:24:58,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:24:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-27 20:24:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949509687] [2024-11-27 20:24:58,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:24:58,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-27 20:24:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:58,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-27 20:24:58,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:24:58,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:24:58,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 262 transitions, 4088 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:24:58,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:24:58,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:24:58,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:02,511 INFO L124 PetriNetUnfolderBase]: 5995/14391 cut-off events. [2024-11-27 20:25:02,511 INFO L125 PetriNetUnfolderBase]: For 293818/294738 co-relation queries the response was YES. [2024-11-27 20:25:02,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63528 conditions, 14391 events. 5995/14391 cut-off events. For 293818/294738 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 97905 event pairs, 341 based on Foata normal form. 324/14702 useless extension candidates. Maximal degree in co-relation 63474. Up to 3223 conditions per place. [2024-11-27 20:25:02,692 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 316 selfloop transitions, 865 changer transitions 0/1191 dead transitions. [2024-11-27 20:25:02,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1191 transitions, 17436 flow [2024-11-27 20:25:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 20:25:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-27 20:25:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 968 transitions. [2024-11-27 20:25:02,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6173469387755102 [2024-11-27 20:25:02,701 INFO L175 Difference]: Start difference. First operand has 120 places, 262 transitions, 4088 flow. Second operand 49 states and 968 transitions. [2024-11-27 20:25:02,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1191 transitions, 17436 flow [2024-11-27 20:25:02,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1191 transitions, 15648 flow, removed 866 selfloop flow, removed 5 redundant places. [2024-11-27 20:25:02,984 INFO L231 Difference]: Finished difference. Result has 208 places, 904 transitions, 15465 flow [2024-11-27 20:25:02,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=15465, PETRI_PLACES=208, PETRI_TRANSITIONS=904} [2024-11-27 20:25:02,986 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2024-11-27 20:25:02,986 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 904 transitions, 15465 flow [2024-11-27 20:25:02,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:02,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:02,987 INFO L206 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-27 20:25:02,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:25:03,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:25:03,188 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:25:03,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1753006643, now seen corresponding path program 4 times [2024-11-27 20:25:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537522782] [2024-11-27 20:25:03,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:03,288 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:03,288 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537522782] [2024-11-27 20:25:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537522782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458740422] [2024-11-27 20:25:06,410 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:25:06,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:06,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:06,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:25:06,559 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:25:06,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:06,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-27 20:25:06,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:06,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458740422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:10,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-27 20:25:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651942845] [2024-11-27 20:25:10,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:10,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-27 20:25:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:10,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-27 20:25:10,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-27 20:25:10,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:25:10,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 904 transitions, 15465 flow. Second operand has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:10,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:25:10,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:25:10,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:25:33,559 INFO L124 PetriNetUnfolderBase]: 21127/50119 cut-off events. [2024-11-27 20:25:33,559 INFO L125 PetriNetUnfolderBase]: For 2275094/2278502 co-relation queries the response was YES. [2024-11-27 20:25:34,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225624 conditions, 50119 events. 21127/50119 cut-off events. For 2275094/2278502 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 396178 event pairs, 1497 based on Foata normal form. 660/50766 useless extension candidates. Maximal degree in co-relation 225528. Up to 11095 conditions per place. [2024-11-27 20:25:34,490 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 606 selfloop transitions, 3305 changer transitions 0/3921 dead transitions. [2024-11-27 20:25:34,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 3921 transitions, 63157 flow [2024-11-27 20:25:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-27 20:25:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-11-27 20:25:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 1928 transitions. [2024-11-27 20:25:34,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6211340206185567 [2024-11-27 20:25:34,497 INFO L175 Difference]: Start difference. First operand has 208 places, 904 transitions, 15465 flow. Second operand 97 states and 1928 transitions. [2024-11-27 20:25:34,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 3921 transitions, 63157 flow [2024-11-27 20:25:36,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 3921 transitions, 56472 flow, removed 3176 selfloop flow, removed 11 redundant places. [2024-11-27 20:25:36,308 INFO L231 Difference]: Finished difference. Result has 386 places, 3346 transitions, 59334 flow [2024-11-27 20:25:36,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=873, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=59334, PETRI_PLACES=386, PETRI_TRANSITIONS=3346} [2024-11-27 20:25:36,309 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 352 predicate places. [2024-11-27 20:25:36,310 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 3346 transitions, 59334 flow [2024-11-27 20:25:36,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:36,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:25:36,310 INFO L206 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-11-27 20:25:36,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:25:36,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:36,511 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-27 20:25:36,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1457919027, now seen corresponding path program 5 times [2024-11-27 20:25:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432564702] [2024-11-27 20:25:36,514 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:37,323 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-27 20:25:37,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:47,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:47,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432564702] [2024-11-27 20:25:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432564702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:47,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444632094] [2024-11-27 20:25:47,242 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:25:47,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:47,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:47,245 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:47,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa55c89c-2222-4883-9c7a-819daef8c99e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:25:47,828 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-27 20:25:47,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:47,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-27 20:25:47,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:48,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444632094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:02,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:02,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2024-11-27 20:26:02,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115633075] [2024-11-27 20:26:02,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:02,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2024-11-27 20:26:02,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:02,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2024-11-27 20:26:02,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2024-11-27 20:26:02,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-27 20:26:02,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 3346 transitions, 59334 flow. Second operand has 192 states, 192 states have (on average 13.0) internal successors, (2496), 192 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:02,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:26:02,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-27 20:26:02,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand