./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:54:04,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:54:04,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 15:54:04,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:54:04,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:54:04,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:54:05,000 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:54:05,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:54:05,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:54:05,002 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:54:05,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:54:05,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:54:05,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:54:05,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:54:05,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:54:05,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:54:05,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:54:05,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 15:54:05,004 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:54:05,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:54:05,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:05,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:54:05,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:54:05,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:54:05,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:54:05,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:54:05,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:54:05,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:54:05,009 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:54:05,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:54:05,010 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_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-13 15:54:05,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:54:05,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:54:05,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:54:05,348 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:54:05,349 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:54:05,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i Unable to find full path for "g++" [2024-11-13 15:54:07,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:54:07,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:54:07,909 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-13 15:54:07,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/data/80ee03be4/f5ca25c7f3aa4636ae15d6751e7c9bc7/FLAG9bb462940 [2024-11-13 15:54:08,083 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/data/80ee03be4/f5ca25c7f3aa4636ae15d6751e7c9bc7 [2024-11-13 15:54:08,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:54:08,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:54:08,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:08,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:54:08,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:54:08,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:08,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19259d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08, skipping insertion in model container [2024-11-13 15:54:08,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:08,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:54:08,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:08,767 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:54:08,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:08,911 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:54:08,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08 WrapperNode [2024-11-13 15:54:08,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:08,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:08,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:54:08,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:54:08,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:08,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:08,993 INFO L138 Inliner]: procedures = 243, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 274 [2024-11-13 15:54:08,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:08,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:54:08,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:54:08,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:54:09,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,045 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-13 15:54:09,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:54:09,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:54:09,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:54:09,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:54:09,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (1/1) ... [2024-11-13 15:54:09,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:09,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:09,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:54:09,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:54:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 15:54:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 15:54:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 15:54:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 15:54:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:54:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:54:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:54:09,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:54:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:54:09,176 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:54:09,472 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:54:09,475 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:54:10,163 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:54:10,164 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:54:11,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:54:11,629 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:54:11,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:11 BoogieIcfgContainer [2024-11-13 15:54:11,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:54:11,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:54:11,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:54:11,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:54:11,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:54:08" (1/3) ... [2024-11-13 15:54:11,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1061329b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:11, skipping insertion in model container [2024-11-13 15:54:11,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:08" (2/3) ... [2024-11-13 15:54:11,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1061329b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:11, skipping insertion in model container [2024-11-13 15:54:11,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:11" (3/3) ... [2024-11-13 15:54:11,639 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-13 15:54:11,657 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:54:11,658 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG arithmetic_prog_ok.i that has 3 procedures, 45 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-13 15:54:11,659 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:54:11,752 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:54:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 110 flow [2024-11-13 15:54:11,859 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2024-11-13 15:54:11,863 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:54:11,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 4/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-13 15:54:11,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 110 flow [2024-11-13 15:54:11,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 44 transitions, 97 flow [2024-11-13 15:54:11,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:54:11,904 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;@7b44fc85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:54:11,906 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-13 15:54:11,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:54:11,941 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-11-13 15:54:11,941 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 15:54:11,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:11,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:11,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:11,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2146711632, now seen corresponding path program 1 times [2024-11-13 15:54:11,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:11,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376208546] [2024-11-13 15:54:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:13,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:13,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376208546] [2024-11-13 15:54:13,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376208546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:13,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:13,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:54:13,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401866593] [2024-11-13 15:54:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:13,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:13,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-13 15:54:13,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:13,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:13,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-13 15:54:13,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:13,757 INFO L124 PetriNetUnfolderBase]: 677/1351 cut-off events. [2024-11-13 15:54:13,758 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-13 15:54:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 1351 events. 677/1351 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7076 event pairs, 185 based on Foata normal form. 16/1197 useless extension candidates. Maximal degree in co-relation 2396. Up to 746 conditions per place. [2024-11-13 15:54:13,774 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 54 selfloop transitions, 5 changer transitions 2/75 dead transitions. [2024-11-13 15:54:13,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 290 flow [2024-11-13 15:54:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:54:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-13 15:54:13,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-11-13 15:54:13,795 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 97 flow. Second operand 4 states and 130 transitions. [2024-11-13 15:54:13,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 290 flow [2024-11-13 15:54:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 281 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:13,809 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 136 flow [2024-11-13 15:54:13,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-11-13 15:54:13,817 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-11-13 15:54:13,817 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 136 flow [2024-11-13 15:54:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:13,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:13,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:13,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:54:13,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2130872429, now seen corresponding path program 1 times [2024-11-13 15:54:13,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:13,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711212238] [2024-11-13 15:54:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:13,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:14,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711212238] [2024-11-13 15:54:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711212238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:14,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845145679] [2024-11-13 15:54:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:14,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:14,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:14,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-13 15:54:14,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:14,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:14,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-13 15:54:14,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:15,192 INFO L124 PetriNetUnfolderBase]: 741/1425 cut-off events. [2024-11-13 15:54:15,192 INFO L125 PetriNetUnfolderBase]: For 370/377 co-relation queries the response was YES. [2024-11-13 15:54:15,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1425 events. 741/1425 cut-off events. For 370/377 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7540 event pairs, 323 based on Foata normal form. 40/1408 useless extension candidates. Maximal degree in co-relation 2412. Up to 888 conditions per place. [2024-11-13 15:54:15,212 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 60 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2024-11-13 15:54:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 346 flow [2024-11-13 15:54:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:54:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-13 15:54:15,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-13 15:54:15,216 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 136 flow. Second operand 4 states and 135 transitions. [2024-11-13 15:54:15,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 346 flow [2024-11-13 15:54:15,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:54:15,222 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 160 flow [2024-11-13 15:54:15,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-13 15:54:15,224 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2024-11-13 15:54:15,224 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 160 flow [2024-11-13 15:54:15,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:15,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:15,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:15,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:54:15,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:15,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash 365512653, now seen corresponding path program 1 times [2024-11-13 15:54:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:15,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487809174] [2024-11-13 15:54:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487809174] [2024-11-13 15:54:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487809174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:15,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:15,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085253473] [2024-11-13 15:54:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:15,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:15,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-11-13 15:54:15,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:15,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:15,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-11-13 15:54:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:16,123 INFO L124 PetriNetUnfolderBase]: 382/961 cut-off events. [2024-11-13 15:54:16,123 INFO L125 PetriNetUnfolderBase]: For 335/345 co-relation queries the response was YES. [2024-11-13 15:54:16,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 961 events. 382/961 cut-off events. For 335/345 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5224 event pairs, 143 based on Foata normal form. 46/976 useless extension candidates. Maximal degree in co-relation 1456. Up to 333 conditions per place. [2024-11-13 15:54:16,133 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 36 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-11-13 15:54:16,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 289 flow [2024-11-13 15:54:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:54:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-13 15:54:16,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-11-13 15:54:16,138 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 160 flow. Second operand 3 states and 102 transitions. [2024-11-13 15:54:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 289 flow [2024-11-13 15:54:16,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 283 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:16,145 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 166 flow [2024-11-13 15:54:16,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-11-13 15:54:16,146 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-11-13 15:54:16,147 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 166 flow [2024-11-13 15:54:16,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:16,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:16,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:16,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:54:16,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:16,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash -76080381, now seen corresponding path program 1 times [2024-11-13 15:54:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:16,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250917023] [2024-11-13 15:54:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:16,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250917023] [2024-11-13 15:54:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250917023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:16,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569096880] [2024-11-13 15:54:16,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:16,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:16,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:16,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-13 15:54:16,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:16,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:16,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-13 15:54:16,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:17,174 INFO L124 PetriNetUnfolderBase]: 556/1204 cut-off events. [2024-11-13 15:54:17,174 INFO L125 PetriNetUnfolderBase]: For 548/566 co-relation queries the response was YES. [2024-11-13 15:54:17,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 1204 events. 556/1204 cut-off events. For 548/566 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5827 event pairs, 115 based on Foata normal form. 33/1184 useless extension candidates. Maximal degree in co-relation 2398. Up to 389 conditions per place. [2024-11-13 15:54:17,186 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 76 selfloop transitions, 8 changer transitions 5/101 dead transitions. [2024-11-13 15:54:17,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 524 flow [2024-11-13 15:54:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:54:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:54:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-13 15:54:17,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-13 15:54:17,191 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 166 flow. Second operand 7 states and 180 transitions. [2024-11-13 15:54:17,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 524 flow [2024-11-13 15:54:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:17,198 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 208 flow [2024-11-13 15:54:17,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-11-13 15:54:17,201 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2024-11-13 15:54:17,201 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 208 flow [2024-11-13 15:54:17,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:17,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:17,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:17,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:54:17,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:17,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:17,202 INFO L85 PathProgramCache]: Analyzing trace with hash -83440583, now seen corresponding path program 1 times [2024-11-13 15:54:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835311264] [2024-11-13 15:54:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:17,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:17,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835311264] [2024-11-13 15:54:17,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835311264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:17,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650490557] [2024-11-13 15:54:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:17,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:17,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:17,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-13 15:54:17,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:17,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:17,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-13 15:54:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:18,347 INFO L124 PetriNetUnfolderBase]: 718/1581 cut-off events. [2024-11-13 15:54:18,347 INFO L125 PetriNetUnfolderBase]: For 1254/1290 co-relation queries the response was YES. [2024-11-13 15:54:18,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 1581 events. 718/1581 cut-off events. For 1254/1290 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7885 event pairs, 181 based on Foata normal form. 30/1580 useless extension candidates. Maximal degree in co-relation 3413. Up to 591 conditions per place. [2024-11-13 15:54:18,360 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 80 selfloop transitions, 12 changer transitions 4/108 dead transitions. [2024-11-13 15:54:18,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 603 flow [2024-11-13 15:54:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:54:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:54:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-11-13 15:54:18,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-13 15:54:18,362 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 208 flow. Second operand 7 states and 182 transitions. [2024-11-13 15:54:18,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 603 flow [2024-11-13 15:54:18,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 108 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:54:18,368 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 302 flow [2024-11-13 15:54:18,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-11-13 15:54:18,369 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2024-11-13 15:54:18,369 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 302 flow [2024-11-13 15:54:18,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:18,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:18,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:18,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:54:18,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:18,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1934901460, now seen corresponding path program 1 times [2024-11-13 15:54:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484608599] [2024-11-13 15:54:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484608599] [2024-11-13 15:54:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484608599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:18,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219331291] [2024-11-13 15:54:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:18,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:18,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-13 15:54:18,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:18,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:18,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-13 15:54:18,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:19,456 INFO L124 PetriNetUnfolderBase]: 859/1914 cut-off events. [2024-11-13 15:54:19,456 INFO L125 PetriNetUnfolderBase]: For 2198/2267 co-relation queries the response was YES. [2024-11-13 15:54:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 1914 events. 859/1914 cut-off events. For 2198/2267 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 10645 event pairs, 463 based on Foata normal form. 68/1923 useless extension candidates. Maximal degree in co-relation 4351. Up to 1100 conditions per place. [2024-11-13 15:54:19,522 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 75 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-13 15:54:19,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 99 transitions, 649 flow [2024-11-13 15:54:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:54:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-13 15:54:19,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-13 15:54:19,528 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 302 flow. Second operand 4 states and 134 transitions. [2024-11-13 15:54:19,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 99 transitions, 649 flow [2024-11-13 15:54:19,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 629 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:19,547 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 314 flow [2024-11-13 15:54:19,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-13 15:54:19,549 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2024-11-13 15:54:19,550 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 314 flow [2024-11-13 15:54:19,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:19,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:19,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:19,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:54:19,551 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:19,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash 671490387, now seen corresponding path program 1 times [2024-11-13 15:54:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:19,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431934859] [2024-11-13 15:54:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:20,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431934859] [2024-11-13 15:54:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431934859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029607610] [2024-11-13 15:54:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:20,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:20,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:20,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:54:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:20,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:54:20,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:20,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:54:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029607610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:54:20,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-13 15:54:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885172972] [2024-11-13 15:54:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:20,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:54:20,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-13 15:54:20,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:20,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:20,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-13 15:54:20,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:21,513 INFO L124 PetriNetUnfolderBase]: 1088/2257 cut-off events. [2024-11-13 15:54:21,513 INFO L125 PetriNetUnfolderBase]: For 2786/2938 co-relation queries the response was YES. [2024-11-13 15:54:21,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6455 conditions, 2257 events. 1088/2257 cut-off events. For 2786/2938 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12179 event pairs, 275 based on Foata normal form. 24/2271 useless extension candidates. Maximal degree in co-relation 5869. Up to 855 conditions per place. [2024-11-13 15:54:21,532 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 83 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-11-13 15:54:21,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 752 flow [2024-11-13 15:54:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:54:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 15:54:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-11-13 15:54:21,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-13 15:54:21,534 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 314 flow. Second operand 8 states and 180 transitions. [2024-11-13 15:54:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 752 flow [2024-11-13 15:54:21,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:21,544 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 428 flow [2024-11-13 15:54:21,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-11-13 15:54:21,545 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2024-11-13 15:54:21,545 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 428 flow [2024-11-13 15:54:21,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:21,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:21,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:21,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:54:21,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:21,746 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:21,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1040696451, now seen corresponding path program 1 times [2024-11-13 15:54:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216395443] [2024-11-13 15:54:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216395443] [2024-11-13 15:54:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216395443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95496977] [2024-11-13 15:54:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:22,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:22,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:22,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:54:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:22,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:54:22,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:23,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:23,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95496977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:23,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-13 15:54:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190854159] [2024-11-13 15:54:23,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:23,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:54:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:54:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:54:23,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-13 15:54:23,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 428 flow. Second operand has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:23,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:23,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-13 15:54:23,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:23,865 INFO L124 PetriNetUnfolderBase]: 972/2030 cut-off events. [2024-11-13 15:54:23,865 INFO L125 PetriNetUnfolderBase]: For 3986/4128 co-relation queries the response was YES. [2024-11-13 15:54:23,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 2030 events. 972/2030 cut-off events. For 3986/4128 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10564 event pairs, 88 based on Foata normal form. 68/2096 useless extension candidates. Maximal degree in co-relation 5647. Up to 632 conditions per place. [2024-11-13 15:54:23,882 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 75 selfloop transitions, 19 changer transitions 2/107 dead transitions. [2024-11-13 15:54:23,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 738 flow [2024-11-13 15:54:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:54:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:54:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-11-13 15:54:23,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-11-13 15:54:23,884 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 428 flow. Second operand 7 states and 164 transitions. [2024-11-13 15:54:23,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 738 flow [2024-11-13 15:54:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 107 transitions, 729 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:23,894 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 407 flow [2024-11-13 15:54:23,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-13 15:54:23,895 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2024-11-13 15:54:23,896 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 407 flow [2024-11-13 15:54:23,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.285714285714285) internal successors, (228), 14 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:23,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:23,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:23,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:54:24,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 15:54:24,101 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:24,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1701270686, now seen corresponding path program 1 times [2024-11-13 15:54:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:24,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670143966] [2024-11-13 15:54:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670143966] [2024-11-13 15:54:24,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670143966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:24,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753908764] [2024-11-13 15:54:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:24,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:24,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:54:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:25,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:54:25,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:25,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:54:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753908764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:54:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 15:54:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993421404] [2024-11-13 15:54:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:25,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:54:25,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-13 15:54:25,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:25,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:25,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-13 15:54:25,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:25,957 INFO L124 PetriNetUnfolderBase]: 881/1956 cut-off events. [2024-11-13 15:54:25,958 INFO L125 PetriNetUnfolderBase]: For 5260/5376 co-relation queries the response was YES. [2024-11-13 15:54:25,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5828 conditions, 1956 events. 881/1956 cut-off events. For 5260/5376 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10740 event pairs, 68 based on Foata normal form. 59/1959 useless extension candidates. Maximal degree in co-relation 5642. Up to 983 conditions per place. [2024-11-13 15:54:25,978 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 100 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2024-11-13 15:54:25,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 999 flow [2024-11-13 15:54:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-11-13 15:54:25,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6423611111111112 [2024-11-13 15:54:25,981 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 407 flow. Second operand 6 states and 185 transitions. [2024-11-13 15:54:25,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 999 flow [2024-11-13 15:54:25,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 890 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-11-13 15:54:25,991 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 353 flow [2024-11-13 15:54:25,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2024-11-13 15:54:25,993 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-13 15:54:25,993 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 353 flow [2024-11-13 15:54:25,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:25,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:25,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:26,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:54:26,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:26,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:26,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash 483840784, now seen corresponding path program 1 times [2024-11-13 15:54:26,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:26,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050946669] [2024-11-13 15:54:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:26,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050946669] [2024-11-13 15:54:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050946669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164697596] [2024-11-13 15:54:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:26,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:26,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:26,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:54:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:27,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:54:27,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:27,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:54:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164697596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:27,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:54:27,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 15:54:27,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6310509] [2024-11-13 15:54:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:27,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:27,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:54:27,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-13 15:54:27,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:27,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:27,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-13 15:54:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:28,039 INFO L124 PetriNetUnfolderBase]: 897/1976 cut-off events. [2024-11-13 15:54:28,039 INFO L125 PetriNetUnfolderBase]: For 3341/3387 co-relation queries the response was YES. [2024-11-13 15:54:28,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5728 conditions, 1976 events. 897/1976 cut-off events. For 3341/3387 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10742 event pairs, 66 based on Foata normal form. 57/1973 useless extension candidates. Maximal degree in co-relation 5252. Up to 812 conditions per place. [2024-11-13 15:54:28,060 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 97 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-13 15:54:28,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 861 flow [2024-11-13 15:54:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-11-13 15:54:28,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-13 15:54:28,062 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 353 flow. Second operand 6 states and 189 transitions. [2024-11-13 15:54:28,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 861 flow [2024-11-13 15:54:28,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 842 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:28,073 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 354 flow [2024-11-13 15:54:28,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-13 15:54:28,074 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-11-13 15:54:28,074 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 354 flow [2024-11-13 15:54:28,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:28,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:28,075 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:28,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:54:28,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:28,275 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:28,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash -142098723, now seen corresponding path program 1 times [2024-11-13 15:54:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497794119] [2024-11-13 15:54:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497794119] [2024-11-13 15:54:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497794119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:28,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:28,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198702609] [2024-11-13 15:54:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:28,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-11-13 15:54:28,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:28,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:28,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-11-13 15:54:28,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:29,038 INFO L124 PetriNetUnfolderBase]: 939/1995 cut-off events. [2024-11-13 15:54:29,038 INFO L125 PetriNetUnfolderBase]: For 4046/4101 co-relation queries the response was YES. [2024-11-13 15:54:29,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 1995 events. 939/1995 cut-off events. For 4046/4101 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10680 event pairs, 205 based on Foata normal form. 59/2037 useless extension candidates. Maximal degree in co-relation 5313. Up to 881 conditions per place. [2024-11-13 15:54:29,053 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 79 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-11-13 15:54:29,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 790 flow [2024-11-13 15:54:29,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:54:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-13 15:54:29,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-13 15:54:29,056 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 354 flow. Second operand 4 states and 123 transitions. [2024-11-13 15:54:29,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 790 flow [2024-11-13 15:54:29,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 771 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 15:54:29,069 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 361 flow [2024-11-13 15:54:29,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-13 15:54:29,072 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-13 15:54:29,072 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 361 flow [2024-11-13 15:54:29,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:29,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:29,072 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:29,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:54:29,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:29,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2114163254, now seen corresponding path program 1 times [2024-11-13 15:54:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726888737] [2024-11-13 15:54:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726888737] [2024-11-13 15:54:29,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726888737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:29,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247846230] [2024-11-13 15:54:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-11-13 15:54:29,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:29,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:29,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-11-13 15:54:29,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:29,910 INFO L124 PetriNetUnfolderBase]: 924/1980 cut-off events. [2024-11-13 15:54:29,910 INFO L125 PetriNetUnfolderBase]: For 4111/4126 co-relation queries the response was YES. [2024-11-13 15:54:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 1980 events. 924/1980 cut-off events. For 4111/4126 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 10358 event pairs, 184 based on Foata normal form. 57/2030 useless extension candidates. Maximal degree in co-relation 5473. Up to 937 conditions per place. [2024-11-13 15:54:29,923 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 68 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-13 15:54:29,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 91 transitions, 680 flow [2024-11-13 15:54:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:54:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-13 15:54:29,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-13 15:54:29,925 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 361 flow. Second operand 4 states and 120 transitions. [2024-11-13 15:54:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 91 transitions, 680 flow [2024-11-13 15:54:29,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 91 transitions, 655 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:29,933 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 365 flow [2024-11-13 15:54:29,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=365, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-13 15:54:29,934 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-13 15:54:29,934 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 365 flow [2024-11-13 15:54:29,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:29,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:29,934 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:29,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:54:29,935 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-13 15:54:29,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash -33956671, now seen corresponding path program 1 times [2024-11-13 15:54:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235325286] [2024-11-13 15:54:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:54:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235325286] [2024-11-13 15:54:30,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235325286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:30,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:30,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:30,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502325939] [2024-11-13 15:54:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:30,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:54:30,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:54:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:54:30,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-13 15:54:30,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:30,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:30,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-13 15:54:30,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:30,742 INFO L124 PetriNetUnfolderBase]: 844/1841 cut-off events. [2024-11-13 15:54:30,742 INFO L125 PetriNetUnfolderBase]: For 4030/4036 co-relation queries the response was YES. [2024-11-13 15:54:30,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 1841 events. 844/1841 cut-off events. For 4030/4036 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9569 event pairs, 563 based on Foata normal form. 22/1845 useless extension candidates. Maximal degree in co-relation 5162. Up to 1250 conditions per place. [2024-11-13 15:54:30,752 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2024-11-13 15:54:30,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 552 flow [2024-11-13 15:54:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:54:30,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:54:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-13 15:54:30,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-13 15:54:30,754 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 365 flow. Second operand 5 states and 115 transitions. [2024-11-13 15:54:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 552 flow [2024-11-13 15:54:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 537 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:54:30,765 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2024-11-13 15:54:30,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2024-11-13 15:54:30,766 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-13 15:54:30,766 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2024-11-13 15:54:30,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:30,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2024-11-13 15:54:30,772 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-13 15:54:30,772 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2024-11-13 15:54:30,773 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-13 15:54:30,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-13 15:54:30,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-13 15:54:30,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-13 15:54:30,774 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-13 15:54:30,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-13 15:54:30,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-13 15:54:30,775 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-13 15:54:30,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:54:30,776 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:30,788 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:54:30,789 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:54:30,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:54:30 BasicIcfg [2024-11-13 15:54:30,798 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:54:30,799 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:54:30,799 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:54:30,799 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:54:30,800 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:11" (3/4) ... [2024-11-13 15:54:30,803 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:54:30,807 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 15:54:30,807 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 15:54:30,819 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 270 nodes and edges [2024-11-13 15:54:30,820 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-13 15:54:30,821 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 15:54:30,821 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 15:54:30,822 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 15:54:30,944 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:54:30,944 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:54:30,944 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:54:30,946 INFO L158 Benchmark]: Toolchain (without parser) took 22857.90ms. Allocated memory was 109.1MB in the beginning and 604.0MB in the end (delta: 494.9MB). Free memory was 82.4MB in the beginning and 326.3MB in the end (delta: -243.9MB). Peak memory consumption was 252.2MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,946 INFO L158 Benchmark]: CDTParser took 1.96ms. Allocated memory is still 83.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:54:30,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 821.06ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 54.3MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.80ms. Allocated memory is still 109.1MB. Free memory was 54.3MB in the beginning and 51.6MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,947 INFO L158 Benchmark]: Boogie Preprocessor took 105.02ms. Allocated memory is still 109.1MB. Free memory was 51.6MB in the beginning and 47.7MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:54:30,947 INFO L158 Benchmark]: RCFGBuilder took 2529.45ms. Allocated memory was 109.1MB in the beginning and 176.2MB in the end (delta: 67.1MB). Free memory was 47.7MB in the beginning and 119.8MB in the end (delta: -72.1MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,948 INFO L158 Benchmark]: TraceAbstraction took 19167.14ms. Allocated memory was 176.2MB in the beginning and 604.0MB in the end (delta: 427.8MB). Free memory was 118.2MB in the beginning and 334.7MB in the end (delta: -216.5MB). Peak memory consumption was 210.3MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,948 INFO L158 Benchmark]: Witness Printer took 145.70ms. Allocated memory is still 604.0MB. Free memory was 334.7MB in the beginning and 326.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:54:30,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.96ms. Allocated memory is still 83.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 821.06ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 54.3MB in the end (delta: 27.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.80ms. Allocated memory is still 109.1MB. Free memory was 54.3MB in the beginning and 51.6MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.02ms. Allocated memory is still 109.1MB. Free memory was 51.6MB in the beginning and 47.7MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2529.45ms. Allocated memory was 109.1MB in the beginning and 176.2MB in the end (delta: 67.1MB). Free memory was 47.7MB in the beginning and 119.8MB in the end (delta: -72.1MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19167.14ms. Allocated memory was 176.2MB in the beginning and 604.0MB in the end (delta: 427.8MB). Free memory was 118.2MB in the beginning and 334.7MB in the end (delta: -216.5MB). Peak memory consumption was 210.3MB. Max. memory is 16.1GB. * Witness Printer took 145.70ms. Allocated memory is still 604.0MB. Free memory was 334.7MB in the beginning and 326.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 83 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.0s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 702 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 178 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2156 IncrementalHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 42 mSDtfsCounter, 2156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=7, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 451 ConstructedInterpolants, 0 QuantifiedInterpolants, 1245 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1712 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 56/94 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 15:54:30,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3112feb3-56bc-4a83-ab7e-5aeab17d403a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE