./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:16:04,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:16:04,672 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 05:16:04,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:16:04,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:16:04,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:16:04,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:16:04,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:16:04,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:16:04,729 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:16:04,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:16:04,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:16:04,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:16:04,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:16:04,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:16:04,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:16:04,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:16:04,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:16:04,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:16:04,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:16:04,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:16:04,732 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:16:04,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:16:04,733 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:16:04,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:16:04,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:16:04,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:16:04,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:04,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:16:04,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:16:04,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:16:04,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:16:04,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:04,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:16:04,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:16:04,736 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:16:04,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:16:04,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:16:04,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:16:04,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:16:04,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:16:04,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:16:04,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:16:04,737 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_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2024-11-28 05:16:05,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:16:05,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:16:05,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:16:05,115 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:16:05,116 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:16:05,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-11-28 05:16:08,146 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/data/d436d00ff/579d6d60ed3a4b2fbddf1f96f9de1884/FLAGfceab34b3 [2024-11-28 05:16:08,533 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:16:08,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-11-28 05:16:08,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/data/d436d00ff/579d6d60ed3a4b2fbddf1f96f9de1884/FLAGfceab34b3 [2024-11-28 05:16:08,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/data/d436d00ff/579d6d60ed3a4b2fbddf1f96f9de1884 [2024-11-28 05:16:08,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:16:08,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:16:08,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:16:08,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:16:08,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:16:08,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:16:08" (1/1) ... [2024-11-28 05:16:08,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2013e583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:08, skipping insertion in model container [2024-11-28 05:16:08,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:16:08" (1/1) ... [2024-11-28 05:16:08,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:16:09,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:16:09,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:16:09,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:16:09,516 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:16:09,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09 WrapperNode [2024-11-28 05:16:09,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:16:09,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:16:09,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:16:09,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:16:09,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,581 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 277 [2024-11-28 05:16:09,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:16:09,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:16:09,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:16:09,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:16:09,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,598 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,632 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-28 05:16:09,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,657 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:16:09,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:16:09,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:16:09,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:16:09,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (1/1) ... [2024-11-28 05:16:09,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:16:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:09,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:16:09,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:16:09,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 05:16:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:16:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:16:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:16:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 05:16:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:16:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:16:09,775 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 05:16:09,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 05:16:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:16:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:16:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:16:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 05:16:09,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:16:09,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:16:09,778 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:16:10,005 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:16:10,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:16:10,704 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:16:10,704 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:16:11,339 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:16:11,339 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-28 05:16:11,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:16:11 BoogieIcfgContainer [2024-11-28 05:16:11,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:16:11,342 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:16:11,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:16:11,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:16:11,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:16:08" (1/3) ... [2024-11-28 05:16:11,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e1d83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:16:11, skipping insertion in model container [2024-11-28 05:16:11,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:16:09" (2/3) ... [2024-11-28 05:16:11,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e1d83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:16:11, skipping insertion in model container [2024-11-28 05:16:11,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:16:11" (3/3) ... [2024-11-28 05:16:11,351 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2024-11-28 05:16:11,373 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:16:11,375 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_75-tricky_address2_racefree.i that has 2 procedures, 87 locations, 1 initial locations, 13 loop locations, and 14 error locations. [2024-11-28 05:16:11,375 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:16:11,449 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 05:16:11,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 111 transitions, 229 flow [2024-11-28 05:16:11,611 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2024-11-28 05:16:11,614 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:16:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 35/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 600 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2024-11-28 05:16:11,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 111 transitions, 229 flow [2024-11-28 05:16:11,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 110 transitions, 227 flow [2024-11-28 05:16:11,636 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:16:11,653 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;@1cf886d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:16:11,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-28 05:16:11,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:16:11,663 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 05:16:11,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:16:11,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:11,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:16:11,666 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:11,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 769678, now seen corresponding path program 1 times [2024-11-28 05:16:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231893815] [2024-11-28 05:16:11,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:12,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231893815] [2024-11-28 05:16:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231893815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:16:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438180852] [2024-11-28 05:16:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:12,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:12,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:12,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:12,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:12,307 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:12,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:12,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:12,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:12,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:12,975 INFO L124 PetriNetUnfolderBase]: 440/1383 cut-off events. [2024-11-28 05:16:12,976 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:16:12,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1383 events. 440/1383 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9300 event pairs, 396 based on Foata normal form. 269/1483 useless extension candidates. Maximal degree in co-relation 2180. Up to 881 conditions per place. [2024-11-28 05:16:13,001 INFO L140 encePairwiseOnDemand]: 85/111 looper letters, 47 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-28 05:16:13,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 291 flow [2024-11-28 05:16:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:16:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-11-28 05:16:13,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5427927927927928 [2024-11-28 05:16:13,022 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 227 flow. Second operand 4 states and 241 transitions. [2024-11-28 05:16:13,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 291 flow [2024-11-28 05:16:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:16:13,039 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 211 flow [2024-11-28 05:16:13,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-28 05:16:13,048 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2024-11-28 05:16:13,048 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 211 flow [2024-11-28 05:16:13,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:16:13,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:13,049 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 05:16:13,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:16:13,049 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:13,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1455378783, now seen corresponding path program 1 times [2024-11-28 05:16:13,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:13,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775027800] [2024-11-28 05:16:13,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:13,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775027800] [2024-11-28 05:16:13,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775027800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441825244] [2024-11-28 05:16:13,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:13,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:13,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:13,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:16:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:13,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:16:13,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:13,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441825244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:13,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:16:13,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:16:13,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662859521] [2024-11-28 05:16:13,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:13,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:16:13,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:13,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:16:13,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:16:13,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:13,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-11-28 05:16:13,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:13,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:14,111 INFO L124 PetriNetUnfolderBase]: 440/1382 cut-off events. [2024-11-28 05:16:14,112 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:16:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1382 events. 440/1382 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9294 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2263. Up to 876 conditions per place. [2024-11-28 05:16:14,124 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 43 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-28 05:16:14,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 305 flow [2024-11-28 05:16:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:16:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:16:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-11-28 05:16:14,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-11-28 05:16:14,129 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 211 flow. Second operand 6 states and 302 transitions. [2024-11-28 05:16:14,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 305 flow [2024-11-28 05:16:14,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:16:14,137 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 217 flow [2024-11-28 05:16:14,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-11-28 05:16:14,139 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2024-11-28 05:16:14,139 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 217 flow [2024-11-28 05:16:14,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-11-28 05:16:14,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:14,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 05:16:14,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:14,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:14,341 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:14,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2127897241, now seen corresponding path program 1 times [2024-11-28 05:16:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:14,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854525323] [2024-11-28 05:16:14,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:14,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:16:14,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:14,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854525323] [2024-11-28 05:16:14,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854525323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:14,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:14,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:16:14,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016840580] [2024-11-28 05:16:14,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:14,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:14,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:14,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:14,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:14,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-28 05:16:14,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:14,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:14,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:14,885 INFO L124 PetriNetUnfolderBase]: 440/1381 cut-off events. [2024-11-28 05:16:14,886 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 05:16:14,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 1381 events. 440/1381 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9284 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2259. Up to 879 conditions per place. [2024-11-28 05:16:14,898 INFO L140 encePairwiseOnDemand]: 108/111 looper letters, 44 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-28 05:16:14,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 309 flow [2024-11-28 05:16:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:16:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-28 05:16:14,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-28 05:16:14,902 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 217 flow. Second operand 3 states and 173 transitions. [2024-11-28 05:16:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 309 flow [2024-11-28 05:16:14,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 287 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 05:16:14,910 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 199 flow [2024-11-28 05:16:14,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-28 05:16:14,911 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2024-11-28 05:16:14,911 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 199 flow [2024-11-28 05:16:14,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-11-28 05:16:14,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:14,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:14,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:16:14,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:14,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash -504657537, now seen corresponding path program 1 times [2024-11-28 05:16:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495125335] [2024-11-28 05:16:14,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:15,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495125335] [2024-11-28 05:16:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495125335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038732185] [2024-11-28 05:16:15,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:15,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:15,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:15,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:16:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:15,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:16:15,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:15,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038732185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:15,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 05:16:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829518726] [2024-11-28 05:16:15,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:15,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:16:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:15,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:16:15,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:16:15,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:15,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-11-28 05:16:15,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:15,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:15,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:15,817 INFO L124 PetriNetUnfolderBase]: 440/1385 cut-off events. [2024-11-28 05:16:15,817 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-28 05:16:15,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1385 events. 440/1385 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9290 event pairs, 396 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 2252. Up to 877 conditions per place. [2024-11-28 05:16:15,827 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-11-28 05:16:15,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 316 flow [2024-11-28 05:16:15,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:16:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:16:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 347 transitions. [2024-11-28 05:16:15,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4465894465894466 [2024-11-28 05:16:15,832 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 199 flow. Second operand 7 states and 347 transitions. [2024-11-28 05:16:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 316 flow [2024-11-28 05:16:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:15,837 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 225 flow [2024-11-28 05:16:15,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-28 05:16:15,839 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-11-28 05:16:15,840 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 225 flow [2024-11-28 05:16:15,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-11-28 05:16:15,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:15,841 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:15,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:16:16,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 05:16:16,041 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:16,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2034631647, now seen corresponding path program 2 times [2024-11-28 05:16:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:16,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895047270] [2024-11-28 05:16:16,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:16,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:16:16,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:16:16,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895047270] [2024-11-28 05:16:16,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895047270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:16,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:16,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:16,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203879293] [2024-11-28 05:16:16,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:16,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:16,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:16,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:16,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 111 [2024-11-28 05:16:16,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-28 05:16:16,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:16,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 111 [2024-11-28 05:16:16,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:16,554 INFO L124 PetriNetUnfolderBase]: 436/1245 cut-off events. [2024-11-28 05:16:16,554 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 05:16:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1245 events. 436/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8197 event pairs, 0 based on Foata normal form. 19/1138 useless extension candidates. Maximal degree in co-relation 2112. Up to 824 conditions per place. [2024-11-28 05:16:16,561 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 86 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-28 05:16:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 473 flow [2024-11-28 05:16:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:16:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-28 05:16:16,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5653153153153153 [2024-11-28 05:16:16,563 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 225 flow. Second operand 4 states and 251 transitions. [2024-11-28 05:16:16,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 473 flow [2024-11-28 05:16:16,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:16,567 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 227 flow [2024-11-28 05:16:16,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-11-28 05:16:16,568 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-11-28 05:16:16,568 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 227 flow [2024-11-28 05:16:16,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-11-28 05:16:16,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:16,569 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:16,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:16:16,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:16,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1161295174, now seen corresponding path program 1 times [2024-11-28 05:16:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:16,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205130858] [2024-11-28 05:16:16,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:16,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205130858] [2024-11-28 05:16:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205130858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455571618] [2024-11-28 05:16:16,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:16,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:16,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:16,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:16,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:16:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:16,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:16:16,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:16,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455571618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:17,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 05:16:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605585590] [2024-11-28 05:16:17,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:17,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:16:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:17,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:16:17,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:16:17,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:17,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-11-28 05:16:17,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:17,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:17,664 INFO L124 PetriNetUnfolderBase]: 439/1337 cut-off events. [2024-11-28 05:16:17,665 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-28 05:16:17,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1337 events. 439/1337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8732 event pairs, 396 based on Foata normal form. 4/1204 useless extension candidates. Maximal degree in co-relation 2217. Up to 859 conditions per place. [2024-11-28 05:16:17,672 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-11-28 05:16:17,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 393 flow [2024-11-28 05:16:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:16:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:16:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 693 transitions. [2024-11-28 05:16:17,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-11-28 05:16:17,676 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 227 flow. Second operand 15 states and 693 transitions. [2024-11-28 05:16:17,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 393 flow [2024-11-28 05:16:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:16:17,679 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 318 flow [2024-11-28 05:16:17,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-11-28 05:16:17,680 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2024-11-28 05:16:17,681 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 318 flow [2024-11-28 05:16:17,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-11-28 05:16:17,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:17,682 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:17,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:16:17,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:17,886 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:17,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 133608954, now seen corresponding path program 2 times [2024-11-28 05:16:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:17,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140344263] [2024-11-28 05:16:17,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:17,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:17,922 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:16:17,922 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:18,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:18,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140344263] [2024-11-28 05:16:18,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140344263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695267779] [2024-11-28 05:16:18,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:18,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:18,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:18,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:18,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:16:18,485 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:16:18,485 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:18,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:16:18,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:18,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695267779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:18,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-28 05:16:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233382293] [2024-11-28 05:16:18,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:18,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:16:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:18,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:16:18,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:16:18,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-28 05:16:18,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 318 flow. Second operand has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-11-28 05:16:18,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:18,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-28 05:16:18,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:19,605 INFO L124 PetriNetUnfolderBase]: 439/1346 cut-off events. [2024-11-28 05:16:19,605 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-28 05:16:19,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1346 events. 439/1346 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8743 event pairs, 396 based on Foata normal form. 3/1212 useless extension candidates. Maximal degree in co-relation 2200. Up to 859 conditions per place. [2024-11-28 05:16:19,614 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-11-28 05:16:19,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 502 flow [2024-11-28 05:16:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:16:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 05:16:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 950 transitions. [2024-11-28 05:16:19,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40755040755040756 [2024-11-28 05:16:19,620 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 318 flow. Second operand 21 states and 950 transitions. [2024-11-28 05:16:19,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 502 flow [2024-11-28 05:16:19,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 492 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 05:16:19,628 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 419 flow [2024-11-28 05:16:19,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=419, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2024-11-28 05:16:19,631 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2024-11-28 05:16:19,632 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 419 flow [2024-11-28 05:16:19,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-11-28 05:16:19,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:19,634 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:19,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:19,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:19,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-28 05:16:19,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash 711475945, now seen corresponding path program 3 times [2024-11-28 05:16:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:19,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479211208] [2024-11-28 05:16:19,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:16:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:19,969 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 05:16:19,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 05:16:19,969 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:16:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:16:20,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:16:20,050 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:16:20,052 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-28 05:16:20,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-28 05:16:20,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-28 05:16:20,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-28 05:16:20,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-28 05:16:20,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-28 05:16:20,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-28 05:16:20,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-28 05:16:20,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-28 05:16:20,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:16:20,063 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-28 05:16:20,065 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:16:20,065 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 05:16:20,112 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 05:16:20,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 157 transitions, 330 flow [2024-11-28 05:16:20,142 INFO L124 PetriNetUnfolderBase]: 59/270 cut-off events. [2024-11-28 05:16:20,142 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 05:16:20,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 59/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1226 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2024-11-28 05:16:20,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 157 transitions, 330 flow [2024-11-28 05:16:20,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 157 transitions, 330 flow [2024-11-28 05:16:20,148 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:16:20,149 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;@1cf886d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:16:20,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-28 05:16:20,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:16:20,153 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 05:16:20,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:16:20,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:20,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:16:20,153 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:20,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 925579, now seen corresponding path program 1 times [2024-11-28 05:16:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282477866] [2024-11-28 05:16:20,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:20,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:20,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282477866] [2024-11-28 05:16:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282477866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:20,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:16:20,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791496542] [2024-11-28 05:16:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:20,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:20,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:20,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:20,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:20,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 157 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-11-28 05:16:20,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:20,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:20,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:24,713 INFO L124 PetriNetUnfolderBase]: 17181/36817 cut-off events. [2024-11-28 05:16:24,714 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-28 05:16:24,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62565 conditions, 36817 events. 17181/36817 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375360 event pairs, 15876 based on Foata normal form. 8193/40951 useless extension candidates. Maximal degree in co-relation 50867. Up to 25644 conditions per place. [2024-11-28 05:16:24,939 INFO L140 encePairwiseOnDemand]: 121/157 looper letters, 68 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-11-28 05:16:24,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 416 flow [2024-11-28 05:16:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:24,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:16:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-11-28 05:16:24,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2024-11-28 05:16:24,941 INFO L175 Difference]: Start difference. First operand has 126 places, 157 transitions, 330 flow. Second operand 4 states and 336 transitions. [2024-11-28 05:16:24,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 416 flow [2024-11-28 05:16:24,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:16:24,945 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 294 flow [2024-11-28 05:16:24,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-11-28 05:16:24,947 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2024-11-28 05:16:24,947 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 294 flow [2024-11-28 05:16:24,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-11-28 05:16:24,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:24,947 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 05:16:24,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:16:24,948 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:24,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1805014079, now seen corresponding path program 1 times [2024-11-28 05:16:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751364680] [2024-11-28 05:16:24,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751364680] [2024-11-28 05:16:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751364680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905362012] [2024-11-28 05:16:25,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:25,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:25,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:16:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:25,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:16:25,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:25,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905362012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:16:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 05:16:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848765985] [2024-11-28 05:16:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:25,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:16:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:25,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:16:25,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:16:25,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:25,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-11-28 05:16:25,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:25,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:25,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:28,230 INFO L124 PetriNetUnfolderBase]: 17181/36816 cut-off events. [2024-11-28 05:16:28,230 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-28 05:16:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62575 conditions, 36816 events. 17181/36816 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375322 event pairs, 15876 based on Foata normal form. 1/32758 useless extension candidates. Maximal degree in co-relation 62556. Up to 25639 conditions per place. [2024-11-28 05:16:28,429 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 64 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-11-28 05:16:28,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 430 flow [2024-11-28 05:16:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:16:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:16:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-28 05:16:28,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4447983014861996 [2024-11-28 05:16:28,432 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 294 flow. Second operand 6 states and 419 transitions. [2024-11-28 05:16:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 430 flow [2024-11-28 05:16:28,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:16:28,436 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 300 flow [2024-11-28 05:16:28,436 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2024-11-28 05:16:28,437 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2024-11-28 05:16:28,437 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 300 flow [2024-11-28 05:16:28,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-11-28 05:16:28,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:28,438 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 05:16:28,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:28,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:16:28,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:28,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 120862500, now seen corresponding path program 1 times [2024-11-28 05:16:28,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253689343] [2024-11-28 05:16:28,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:16:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253689343] [2024-11-28 05:16:28,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253689343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:28,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:28,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:16:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124294217] [2024-11-28 05:16:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:28,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:16:28,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:28,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:16:28,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:16:28,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:28,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-28 05:16:28,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:28,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:28,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:31,894 INFO L124 PetriNetUnfolderBase]: 17181/36815 cut-off events. [2024-11-28 05:16:31,895 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-28 05:16:31,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62577 conditions, 36815 events. 17181/36815 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375394 event pairs, 15876 based on Foata normal form. 1/32758 useless extension candidates. Maximal degree in co-relation 62552. Up to 25642 conditions per place. [2024-11-28 05:16:32,049 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 65 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-28 05:16:32,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 434 flow [2024-11-28 05:16:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:16:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:16:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-28 05:16:32,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138004246284501 [2024-11-28 05:16:32,051 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 300 flow. Second operand 3 states and 242 transitions. [2024-11-28 05:16:32,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 434 flow [2024-11-28 05:16:32,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 412 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 05:16:32,054 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 282 flow [2024-11-28 05:16:32,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2024-11-28 05:16:32,055 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2024-11-28 05:16:32,055 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 282 flow [2024-11-28 05:16:32,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-28 05:16:32,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:32,056 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:32,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:16:32,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:32,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash 184950984, now seen corresponding path program 1 times [2024-11-28 05:16:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371122793] [2024-11-28 05:16:32,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371122793] [2024-11-28 05:16:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371122793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95382048] [2024-11-28 05:16:32,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:32,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:32,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:32,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:32,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:16:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:32,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:16:32,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:32,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95382048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:32,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-28 05:16:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672969421] [2024-11-28 05:16:32,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:32,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:16:32,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:32,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:16:32,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:16:32,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:32,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-11-28 05:16:32,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:32,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:32,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:35,438 INFO L124 PetriNetUnfolderBase]: 17181/36819 cut-off events. [2024-11-28 05:16:35,438 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-28 05:16:35,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62580 conditions, 36819 events. 17181/36819 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375366 event pairs, 15876 based on Foata normal form. 2/32764 useless extension candidates. Maximal degree in co-relation 62545. Up to 25640 conditions per place. [2024-11-28 05:16:35,553 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 65 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2024-11-28 05:16:35,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 441 flow [2024-11-28 05:16:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:16:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:16:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 480 transitions. [2024-11-28 05:16:35,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4367606915377616 [2024-11-28 05:16:35,556 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 282 flow. Second operand 7 states and 480 transitions. [2024-11-28 05:16:35,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 441 flow [2024-11-28 05:16:35,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:35,560 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 308 flow [2024-11-28 05:16:35,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2024-11-28 05:16:35,561 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2024-11-28 05:16:35,561 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 308 flow [2024-11-28 05:16:35,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-11-28 05:16:35,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:35,562 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:35,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:16:35,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 05:16:35,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:35,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1653527624, now seen corresponding path program 2 times [2024-11-28 05:16:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546117662] [2024-11-28 05:16:35,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:35,777 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:16:35,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 05:16:35,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:35,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546117662] [2024-11-28 05:16:35,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546117662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:35,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:35,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:35,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401170853] [2024-11-28 05:16:35,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:35,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:35,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:35,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:35,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:35,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-11-28 05:16:35,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-28 05:16:35,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:35,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-11-28 05:16:35,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:39,664 INFO L124 PetriNetUnfolderBase]: 19364/41314 cut-off events. [2024-11-28 05:16:39,664 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-11-28 05:16:39,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70343 conditions, 41314 events. 19364/41314 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 426427 event pairs, 11718 based on Foata normal form. 19/36777 useless extension candidates. Maximal degree in co-relation 70303. Up to 28850 conditions per place. [2024-11-28 05:16:39,805 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 111 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2024-11-28 05:16:39,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 614 flow [2024-11-28 05:16:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:16:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2024-11-28 05:16:39,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5414012738853503 [2024-11-28 05:16:39,807 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 308 flow. Second operand 4 states and 340 transitions. [2024-11-28 05:16:39,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 614 flow [2024-11-28 05:16:39,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:39,812 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 328 flow [2024-11-28 05:16:39,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2024-11-28 05:16:39,816 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2024-11-28 05:16:39,816 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 328 flow [2024-11-28 05:16:39,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-28 05:16:39,817 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:39,817 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:39,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:16:39,817 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:39,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2026210185, now seen corresponding path program 1 times [2024-11-28 05:16:39,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275885979] [2024-11-28 05:16:39,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:40,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:40,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275885979] [2024-11-28 05:16:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275885979] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:40,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577669026] [2024-11-28 05:16:40,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:40,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:40,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:40,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:40,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:16:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:40,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:16:40,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:40,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:40,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577669026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:40,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:40,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 05:16:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517573813] [2024-11-28 05:16:40,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:40,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:16:40,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:40,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:16:40,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:16:40,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:40,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 328 flow. Second operand has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-11-28 05:16:40,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:40,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:40,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:43,832 INFO L124 PetriNetUnfolderBase]: 17179/36795 cut-off events. [2024-11-28 05:16:43,832 INFO L125 PetriNetUnfolderBase]: For 904/1612 co-relation queries the response was YES. [2024-11-28 05:16:43,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63373 conditions, 36795 events. 17179/36795 cut-off events. For 904/1612 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 374510 event pairs, 15876 based on Foata normal form. 20/33121 useless extension candidates. Maximal degree in co-relation 63296. Up to 25631 conditions per place. [2024-11-28 05:16:43,981 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 66 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-11-28 05:16:43,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 538 flow [2024-11-28 05:16:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:16:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-28 05:16:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 954 transitions. [2024-11-28 05:16:43,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4050955414012739 [2024-11-28 05:16:43,986 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 328 flow. Second operand 15 states and 954 transitions. [2024-11-28 05:16:43,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 538 flow [2024-11-28 05:16:43,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:16:43,991 INFO L231 Difference]: Finished difference. Result has 155 places, 140 transitions, 423 flow [2024-11-28 05:16:43,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=423, PETRI_PLACES=155, PETRI_TRANSITIONS=140} [2024-11-28 05:16:43,992 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2024-11-28 05:16:43,992 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 140 transitions, 423 flow [2024-11-28 05:16:43,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-11-28 05:16:43,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:43,993 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:44,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:16:44,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:16:44,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:44,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1623827319, now seen corresponding path program 2 times [2024-11-28 05:16:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401287794] [2024-11-28 05:16:44,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:44,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:44,211 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:16:44,211 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 05:16:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401287794] [2024-11-28 05:16:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401287794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:44,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:44,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:16:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652016272] [2024-11-28 05:16:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:44,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:16:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:44,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:16:44,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:16:44,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-11-28 05:16:44,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 140 transitions, 423 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2024-11-28 05:16:44,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:44,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-11-28 05:16:44,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:47,740 INFO L124 PetriNetUnfolderBase]: 17783/34731 cut-off events. [2024-11-28 05:16:47,740 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2024-11-28 05:16:47,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63326 conditions, 34731 events. 17783/34731 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 335047 event pairs, 781 based on Foata normal form. 361/31940 useless extension candidates. Maximal degree in co-relation 63225. Up to 21890 conditions per place. [2024-11-28 05:16:47,924 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 187 selfloop transitions, 6 changer transitions 0/248 dead transitions. [2024-11-28 05:16:47,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 1023 flow [2024-11-28 05:16:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:16:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:16:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 523 transitions. [2024-11-28 05:16:47,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5552016985138004 [2024-11-28 05:16:47,927 INFO L175 Difference]: Start difference. First operand has 155 places, 140 transitions, 423 flow. Second operand 6 states and 523 transitions. [2024-11-28 05:16:47,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 1023 flow [2024-11-28 05:16:47,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 248 transitions, 1013 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 05:16:47,935 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 421 flow [2024-11-28 05:16:47,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2024-11-28 05:16:47,936 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2024-11-28 05:16:47,937 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 421 flow [2024-11-28 05:16:47,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2024-11-28 05:16:47,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:47,937 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:47,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:16:47,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:47,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1200961583, now seen corresponding path program 1 times [2024-11-28 05:16:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:47,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160409610] [2024-11-28 05:16:47,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:47,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 05:16:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160409610] [2024-11-28 05:16:48,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160409610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:48,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179852073] [2024-11-28 05:16:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:48,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:16:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:48,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:16:48,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:16:48,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-11-28 05:16:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-11-28 05:16:48,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:48,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-11-28 05:16:48,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:51,548 INFO L124 PetriNetUnfolderBase]: 17454/33290 cut-off events. [2024-11-28 05:16:51,548 INFO L125 PetriNetUnfolderBase]: For 3048/3048 co-relation queries the response was YES. [2024-11-28 05:16:51,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62079 conditions, 33290 events. 17454/33290 cut-off events. For 3048/3048 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 308837 event pairs, 2174 based on Foata normal form. 361/31045 useless extension candidates. Maximal degree in co-relation 61982. Up to 23384 conditions per place. [2024-11-28 05:16:51,690 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 150 selfloop transitions, 6 changer transitions 0/211 dead transitions. [2024-11-28 05:16:51,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 211 transitions, 875 flow [2024-11-28 05:16:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:16:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:16:51,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2024-11-28 05:16:51,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.589171974522293 [2024-11-28 05:16:51,693 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 421 flow. Second operand 4 states and 370 transitions. [2024-11-28 05:16:51,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 211 transitions, 875 flow [2024-11-28 05:16:51,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 211 transitions, 859 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 05:16:51,726 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 421 flow [2024-11-28 05:16:51,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2024-11-28 05:16:51,727 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 27 predicate places. [2024-11-28 05:16:51,727 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 421 flow [2024-11-28 05:16:51,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-11-28 05:16:51,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:51,728 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:51,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:16:51,728 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:51,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1390320651, now seen corresponding path program 1 times [2024-11-28 05:16:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:51,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955642942] [2024-11-28 05:16:51,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955642942] [2024-11-28 05:16:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955642942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888220317] [2024-11-28 05:16:52,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:52,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:52,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:52,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:52,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:16:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:52,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:16:52,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:52,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:16:52,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888220317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:16:52,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:16:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-28 05:16:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421456444] [2024-11-28 05:16:52,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:52,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:16:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:52,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:16:52,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:16:52,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:52,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 421 flow. Second operand has 23 states, 23 states have (on average 59.43478260869565) internal successors, (1367), 23 states have internal predecessors, (1367), 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) [2024-11-28 05:16:52,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:52,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:52,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:16:56,597 INFO L124 PetriNetUnfolderBase]: 17179/36696 cut-off events. [2024-11-28 05:16:56,597 INFO L125 PetriNetUnfolderBase]: For 3249/3249 co-relation queries the response was YES. [2024-11-28 05:16:56,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64069 conditions, 36696 events. 17179/36696 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 372339 event pairs, 15876 based on Foata normal form. 3/32962 useless extension candidates. Maximal degree in co-relation 63938. Up to 25631 conditions per place. [2024-11-28 05:16:56,757 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 67 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-11-28 05:16:56,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 145 transitions, 651 flow [2024-11-28 05:16:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:16:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 05:16:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1307 transitions. [2024-11-28 05:16:56,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3964209887776767 [2024-11-28 05:16:56,761 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 421 flow. Second operand 21 states and 1307 transitions. [2024-11-28 05:16:56,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 145 transitions, 651 flow [2024-11-28 05:16:56,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 145 transitions, 643 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:16:56,767 INFO L231 Difference]: Finished difference. Result has 174 places, 145 transitions, 524 flow [2024-11-28 05:16:56,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=524, PETRI_PLACES=174, PETRI_TRANSITIONS=145} [2024-11-28 05:16:56,768 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 48 predicate places. [2024-11-28 05:16:56,769 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 145 transitions, 524 flow [2024-11-28 05:16:56,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.43478260869565) internal successors, (1367), 23 states have internal predecessors, (1367), 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) [2024-11-28 05:16:56,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:16:56,770 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:56,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:16:56,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec57e470-7741-4dbc-b4b9-443c32e1053c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:16:56,974 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:16:56,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:56,974 INFO L85 PathProgramCache]: Analyzing trace with hash 532679745, now seen corresponding path program 2 times [2024-11-28 05:16:56,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:56,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598291491] [2024-11-28 05:16:56,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:16:56,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:57,017 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:16:57,017 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:16:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 05:16:58,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:58,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598291491] [2024-11-28 05:16:58,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598291491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:58,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:58,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:16:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726979559] [2024-11-28 05:16:58,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:58,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:16:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:58,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:16:58,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:16:58,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-28 05:16:58,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 145 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-28 05:16:58,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:16:58,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-28 05:16:58,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:17:02,945 INFO L124 PetriNetUnfolderBase]: 21232/43380 cut-off events. [2024-11-28 05:17:02,945 INFO L125 PetriNetUnfolderBase]: For 2603/2603 co-relation queries the response was YES. [2024-11-28 05:17:03,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77454 conditions, 43380 events. 21232/43380 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 442566 event pairs, 2820 based on Foata normal form. 544/40146 useless extension candidates. Maximal degree in co-relation 77294. Up to 23250 conditions per place. [2024-11-28 05:17:03,479 INFO L140 encePairwiseOnDemand]: 149/157 looper letters, 238 selfloop transitions, 11 changer transitions 0/304 dead transitions. [2024-11-28 05:17:03,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 304 transitions, 1410 flow [2024-11-28 05:17:03,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:17:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:17:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 577 transitions. [2024-11-28 05:17:03,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125265392781316 [2024-11-28 05:17:03,481 INFO L175 Difference]: Start difference. First operand has 174 places, 145 transitions, 524 flow. Second operand 6 states and 577 transitions. [2024-11-28 05:17:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 304 transitions, 1410 flow [2024-11-28 05:17:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 304 transitions, 1367 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-28 05:17:03,489 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 564 flow [2024-11-28 05:17:03,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2024-11-28 05:17:03,490 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 44 predicate places. [2024-11-28 05:17:03,490 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 564 flow [2024-11-28 05:17:03,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-28 05:17:03,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:03,491 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 05:17:03,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:17:03,491 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-28 05:17:03,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1738621907, now seen corresponding path program 1 times [2024-11-28 05:17:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258182683] [2024-11-28 05:17:03,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:17:03,524 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:17:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:17:03,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:17:03,568 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:17:03,568 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-28 05:17:03,568 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-11-28 05:17:03,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2024-11-28 05:17:03,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-11-28 05:17:03,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-11-28 05:17:03,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-11-28 05:17:03,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-11-28 05:17:03,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-11-28 05:17:03,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-11-28 05:17:03,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:17:03,571 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 05:17:03,572 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 05:17:03,572 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 05:17:03,623 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:17:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 203 transitions, 433 flow [2024-11-28 05:17:03,666 INFO L124 PetriNetUnfolderBase]: 86/401 cut-off events. [2024-11-28 05:17:03,666 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 05:17:03,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 401 events. 86/401 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1955 event pairs, 1 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 279. Up to 16 conditions per place. [2024-11-28 05:17:03,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 203 transitions, 433 flow [2024-11-28 05:17:03,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 203 transitions, 433 flow [2024-11-28 05:17:03,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:17:03,673 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;@1cf886d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:17:03,673 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-28 05:17:03,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:17:03,675 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 05:17:03,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:17:03,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:17:03,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:17:03,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-28 05:17:03,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1127158, now seen corresponding path program 1 times [2024-11-28 05:17:03,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017997990] [2024-11-28 05:17:03,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:17:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:03,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017997990] [2024-11-28 05:17:03,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017997990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:03,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:03,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:17:03,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185940770] [2024-11-28 05:17:03,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:03,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:17:03,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:03,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:17:03,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:17:03,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 203 [2024-11-28 05:17:03,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 203 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2024-11-28 05:17:03,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:17:03,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 203 [2024-11-28 05:17:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand