./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/twostage_3.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_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/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_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/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_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/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 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:48:41,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:48:41,664 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:48:41,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:48:41,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:48:41,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:48:41,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:48:41,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:48:41,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:48:41,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:48:41,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:48:41,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:48:41,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:48:41,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:48:41,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:48:41,719 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:48:41,719 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:41,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:41,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:41,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:41,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:48:41,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:48:41,722 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:48:41,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:48:41,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:48:41,723 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_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/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 -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-11-28 02:48:42,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:48:42,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:48:42,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:48:42,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:48:42,092 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:48:42,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread/twostage_3.i [2024-11-28 02:48:45,075 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/data/71e93e0a0/01e5eab10ce249e19df535549746c256/FLAGc74cf5f15 [2024-11-28 02:48:45,465 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:48:45,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/sv-benchmarks/c/pthread/twostage_3.i [2024-11-28 02:48:45,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/data/71e93e0a0/01e5eab10ce249e19df535549746c256/FLAGc74cf5f15 [2024-11-28 02:48:45,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/data/71e93e0a0/01e5eab10ce249e19df535549746c256 [2024-11-28 02:48:45,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:48:45,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:48:45,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:45,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:48:45,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:48:45,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:45" (1/1) ... [2024-11-28 02:48:45,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e8f2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:45, skipping insertion in model container [2024-11-28 02:48:45,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:45" (1/1) ... [2024-11-28 02:48:45,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:48:46,415 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:48:46,416 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:48:46,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:46,431 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:48:46,507 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:48:46,508 WARN L1675 CHandler]: Possible shadowing of function lock [2024-11-28 02:48:46,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:46,612 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:48:46,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46 WrapperNode [2024-11-28 02:48:46,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:46,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:46,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:48:46,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:48:46,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,689 INFO L138 Inliner]: procedures = 373, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 179 [2024-11-28 02:48:46,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:46,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:48:46,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:48:46,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:48:46,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,747 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-28 02:48:46,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,772 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:48:46,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:48:46,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:48:46,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:48:46,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (1/1) ... [2024-11-28 02:48:46,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:46,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:46,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:48:46,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8738ad7c-b886-4941-9e04-e4b7c6be0c6a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:48:46,898 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-11-28 02:48:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-11-28 02:48:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-11-28 02:48:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-11-28 02:48:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:48:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:48:46,899 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:48:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:48:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:48:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:48:46,903 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 02:48:47,117 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:48:47,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:48:47,627 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:48:47,628 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:48:47,974 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:48:47,974 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:48:47,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:47 BoogieIcfgContainer [2024-11-28 02:48:47,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:48:47,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:48:47,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:48:47,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:48:47,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:48:45" (1/3) ... [2024-11-28 02:48:47,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282d7e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:47, skipping insertion in model container [2024-11-28 02:48:47,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:46" (2/3) ... [2024-11-28 02:48:47,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282d7e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:47, skipping insertion in model container [2024-11-28 02:48:47,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:47" (3/3) ... [2024-11-28 02:48:47,990 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-11-28 02:48:48,009 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:48:48,010 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3.i that has 3 procedures, 66 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2024-11-28 02:48:48,011 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:48:48,094 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 02:48:48,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 72 transitions, 164 flow [2024-11-28 02:48:48,240 INFO L124 PetriNetUnfolderBase]: 10/141 cut-off events. [2024-11-28 02:48:48,243 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 02:48:48,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 141 events. 10/141 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 576 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2024-11-28 02:48:48,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 72 transitions, 164 flow [2024-11-28 02:48:48,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 72 transitions, 164 flow [2024-11-28 02:48:48,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:48,276 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;@6ba0a0a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:48,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-28 02:48:48,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:48,288 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 02:48:48,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:48:48,292 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:48,292 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:48:48,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:48:48,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:48,299 INFO L85 PathProgramCache]: Analyzing trace with hash 536147321, now seen corresponding path program 1 times [2024-11-28 02:48:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406209347] [2024-11-28 02:48:48,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:48,799 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 02:48:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406209347] [2024-11-28 02:48:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406209347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:48:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054634881] [2024-11-28 02:48:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:48,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:48,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:48,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:48,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-28 02:48:48,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 02:48:48,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:48,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-28 02:48:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:50,167 INFO L124 PetriNetUnfolderBase]: 2384/4943 cut-off events. [2024-11-28 02:48:50,168 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-28 02:48:50,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8922 conditions, 4943 events. 2384/4943 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35562 event pairs, 1413 based on Foata normal form. 12/4230 useless extension candidates. Maximal degree in co-relation 7989. Up to 2508 conditions per place. [2024-11-28 02:48:50,232 INFO L140 encePairwiseOnDemand]: 62/72 looper letters, 80 selfloop transitions, 9 changer transitions 2/117 dead transitions. [2024-11-28 02:48:50,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 448 flow [2024-11-28 02:48:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-28 02:48:50,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-11-28 02:48:50,258 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 164 flow. Second operand 4 states and 196 transitions. [2024-11-28 02:48:50,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 448 flow [2024-11-28 02:48:50,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:48:50,281 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 208 flow [2024-11-28 02:48:50,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-11-28 02:48:50,289 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-11-28 02:48:50,289 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 208 flow [2024-11-28 02:48:50,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 02:48:50,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:50,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:48:50,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:48:50,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:48:50,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:50,292 INFO L85 PathProgramCache]: Analyzing trace with hash -559301682, now seen corresponding path program 1 times [2024-11-28 02:48:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:50,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146971371] [2024-11-28 02:48:50,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:50,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:50,521 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 02:48:50,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146971371] [2024-11-28 02:48:50,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146971371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:48:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895666463] [2024-11-28 02:48:50,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:50,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:50,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:50,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:50,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-28 02:48:50,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 02:48:50,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:50,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-28 02:48:50,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:51,472 INFO L124 PetriNetUnfolderBase]: 2371/4916 cut-off events. [2024-11-28 02:48:51,473 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-11-28 02:48:51,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10033 conditions, 4916 events. 2371/4916 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35500 event pairs, 1391 based on Foata normal form. 12/4692 useless extension candidates. Maximal degree in co-relation 8939. Up to 2462 conditions per place. [2024-11-28 02:48:51,511 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 80 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2024-11-28 02:48:51,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 484 flow [2024-11-28 02:48:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-28 02:48:51,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-11-28 02:48:51,516 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 208 flow. Second operand 4 states and 195 transitions. [2024-11-28 02:48:51,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 484 flow [2024-11-28 02:48:51,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:48:51,533 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 237 flow [2024-11-28 02:48:51,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-28 02:48:51,535 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2024-11-28 02:48:51,536 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 237 flow [2024-11-28 02:48:51,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 02:48:51,537 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:51,537 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:48:51,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:48:51,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:48:51,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -560302910, now seen corresponding path program 1 times [2024-11-28 02:48:51,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:51,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034092842] [2024-11-28 02:48:51,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:51,704 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 02:48:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034092842] [2024-11-28 02:48:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034092842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:51,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230758107] [2024-11-28 02:48:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:51,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:51,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:51,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:51,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2024-11-28 02:48:51,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 02:48:51,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:51,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2024-11-28 02:48:51,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:48:52,434 INFO L124 PetriNetUnfolderBase]: 2371/4885 cut-off events. [2024-11-28 02:48:52,434 INFO L125 PetriNetUnfolderBase]: For 3451/3451 co-relation queries the response was YES. [2024-11-28 02:48:52,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10667 conditions, 4885 events. 2371/4885 cut-off events. For 3451/3451 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 35111 event pairs, 998 based on Foata normal form. 260/4935 useless extension candidates. Maximal degree in co-relation 9486. Up to 2115 conditions per place. [2024-11-28 02:48:52,469 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 90 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2024-11-28 02:48:52,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 124 transitions, 549 flow [2024-11-28 02:48:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:48:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-28 02:48:52,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-11-28 02:48:52,475 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 237 flow. Second operand 4 states and 206 transitions. [2024-11-28 02:48:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 124 transitions, 549 flow [2024-11-28 02:48:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 124 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:48:52,493 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 242 flow [2024-11-28 02:48:52,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-28 02:48:52,495 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-11-28 02:48:52,495 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 242 flow [2024-11-28 02:48:52,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 02:48:52,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:52,496 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:52,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:48:52,496 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-28 02:48:52,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -617985636, now seen corresponding path program 1 times [2024-11-28 02:48:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126484062] [2024-11-28 02:48:52,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:48:52,573 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:48:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:48:52,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:48:52,642 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:48:52,643 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-28 02:48:52,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-28 02:48:52,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-28 02:48:52,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:48:52,649 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 02:48:52,652 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:48:52,652 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:48:52,705 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-28 02:48:52,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 113 transitions, 270 flow [2024-11-28 02:48:52,768 INFO L124 PetriNetUnfolderBase]: 63/497 cut-off events. [2024-11-28 02:48:52,768 INFO L125 PetriNetUnfolderBase]: For 72/84 co-relation queries the response was YES. [2024-11-28 02:48:52,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 497 events. 63/497 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3125 event pairs, 2 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 306. Up to 32 conditions per place. [2024-11-28 02:48:52,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 113 transitions, 270 flow [2024-11-28 02:48:52,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 113 transitions, 270 flow [2024-11-28 02:48:52,798 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:52,798 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;@6ba0a0a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:52,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 02:48:52,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:48:52,801 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-28 02:48:52,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:48:52,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:48:52,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:48:52,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-28 02:48:52,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash 642108811, now seen corresponding path program 1 times [2024-11-28 02:48:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872937780] [2024-11-28 02:48:52,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:52,879 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 02:48:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872937780] [2024-11-28 02:48:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872937780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:48:52,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740890521] [2024-11-28 02:48:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:52,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:52,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:52,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:52,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:52,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 113 [2024-11-28 02:48:52,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 02:48:52,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:48:52,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 113 [2024-11-28 02:48:52,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand