./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/sync01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/sync01.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b207ba781093ff4dcae5b84103210bd6f33cd57f80035ff0ba393ed7d4da1a3f --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:04:24,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:04:25,041 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-29 11:04:25,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:04:25,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:04:25,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:04:25,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:04:25,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:04:25,071 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:04:25,071 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:04:25,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:04:25,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:04:25,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:04:25,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:04:25,072 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:04:25,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:04:25,073 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:25,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:25,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:25,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:04:25,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:04:25,074 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> b207ba781093ff4dcae5b84103210bd6f33cd57f80035ff0ba393ed7d4da1a3f [2025-04-29 11:04:25,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:04:25,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:04:25,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:04:25,283 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:04:25,283 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:04:25,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.c [2025-04-29 11:04:26,567 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a15fd766/ef75f8b27b2e456cbc6ec680e9614cca/FLAG91d15a15a [2025-04-29 11:04:26,743 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:04:26,744 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.c [2025-04-29 11:04:26,745 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:26,745 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:26,745 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:26,749 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a15fd766/ef75f8b27b2e456cbc6ec680e9614cca/FLAG91d15a15a [2025-04-29 11:04:27,569 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a15fd766/ef75f8b27b2e456cbc6ec680e9614cca [2025-04-29 11:04:27,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:04:27,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:04:27,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:27,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:04:27,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:04:27,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e5f95c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27, skipping insertion in model container [2025-04-29 11:04:27,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,590 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:04:27,745 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:27,752 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:04:27,780 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:27,797 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:04:27,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27 WrapperNode [2025-04-29 11:04:27,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:27,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:27,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:04:27,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:04:27,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,824 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2025-04-29 11:04:27,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:27,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:04:27,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:04:27,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:04:27,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,834 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,850 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-04-29 11:04:27,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,851 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,854 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:04:27,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:04:27,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:04:27,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:04:27,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (1/1) ... [2025-04-29 11:04:27,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:04:27,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:04:27,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:04:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-29 11:04:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-29 11:04:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:04:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:04:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:04:27,915 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:04:27,966 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:04:27,967 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:04:28,068 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:04:28,069 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:04:28,138 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:04:28,138 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:04:28,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:28 BoogieIcfgContainer [2025-04-29 11:04:28,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:04:28,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:04:28,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:04:28,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:04:28,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:04:27" (1/3) ... [2025-04-29 11:04:28,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca20cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:28, skipping insertion in model container [2025-04-29 11:04:28,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:27" (2/3) ... [2025-04-29 11:04:28,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eca20cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:28, skipping insertion in model container [2025-04-29 11:04:28,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:28" (3/3) ... [2025-04-29 11:04:28,148 INFO L128 eAbstractionObserver]: Analyzing ICFG sync01.c [2025-04-29 11:04:28,158 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:04:28,160 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sync01.c that has 3 procedures, 35 locations, 34 edges, 1 initial locations, 2 loop locations, and 4 error locations. [2025-04-29 11:04:28,160 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:04:28,196 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-29 11:04:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 86 flow [2025-04-29 11:04:28,256 INFO L116 PetriNetUnfolderBase]: 2/34 cut-off events. [2025-04-29 11:04:28,257 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:04:28,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 2/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-04-29 11:04:28,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 86 flow [2025-04-29 11:04:28,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 73 flow [2025-04-29 11:04:28,267 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:04:28,275 INFO L340 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;@4606971a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:04:28,276 INFO L341 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-04-29 11:04:28,282 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:04:28,283 INFO L116 PetriNetUnfolderBase]: 1/15 cut-off events. [2025-04-29 11:04:28,283 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:04:28,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:28,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:28,284 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:28,290 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash 785151363, now seen corresponding path program 1 times [2025-04-29 11:04:28,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:28,295 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868261610] [2025-04-29 11:04:28,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:28,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:04:28,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:04:28,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:28,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:28,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:28,445 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868261610] [2025-04-29 11:04:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868261610] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:28,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:28,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:04:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687264255] [2025-04-29 11:04:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:28,451 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:04:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:28,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:04:28,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:04:28,479 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-04-29 11:04:28,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-04-29 11:04:28,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:28,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-04-29 11:04:28,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:28,576 INFO L116 PetriNetUnfolderBase]: 147/297 cut-off events. [2025-04-29 11:04:28,576 INFO L117 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-04-29 11:04:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 297 events. 147/297 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1163 event pairs, 64 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 555. Up to 136 conditions per place. [2025-04-29 11:04:28,580 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 17 selfloop transitions, 2 changer transitions 7/36 dead transitions. [2025-04-29 11:04:28,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 133 flow [2025-04-29 11:04:28,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:04:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:04:28,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-04-29 11:04:28,590 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-04-29 11:04:28,591 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 64 transitions. [2025-04-29 11:04:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 133 flow [2025-04-29 11:04:28,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:28,597 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 65 flow [2025-04-29 11:04:28,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2025-04-29 11:04:28,601 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2025-04-29 11:04:28,601 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 65 flow [2025-04-29 11:04:28,601 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-04-29 11:04:28,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:28,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:28,601 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:04:28,602 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:28,602 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 290746361, now seen corresponding path program 1 times [2025-04-29 11:04:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:28,602 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722092242] [2025-04-29 11:04:28,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:28,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-29 11:04:28,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-29 11:04:28,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:28,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:28,690 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722092242] [2025-04-29 11:04:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722092242] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:28,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:28,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:04:28,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570653773] [2025-04-29 11:04:28,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:28,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:04:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:28,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:04:28,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:28,699 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2025-04-29 11:04:28,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-04-29 11:04:28,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:28,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2025-04-29 11:04:28,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:28,772 INFO L116 PetriNetUnfolderBase]: 106/228 cut-off events. [2025-04-29 11:04:28,773 INFO L117 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-04-29 11:04:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 228 events. 106/228 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 874 event pairs, 28 based on Foata normal form. 10/227 useless extension candidates. Maximal degree in co-relation 266. Up to 83 conditions per place. [2025-04-29 11:04:28,775 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 22 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2025-04-29 11:04:28,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 133 flow [2025-04-29 11:04:28,776 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:04:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:04:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2025-04-29 11:04:28,777 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-04-29 11:04:28,777 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 65 flow. Second operand 4 states and 66 transitions. [2025-04-29 11:04:28,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 133 flow [2025-04-29 11:04:28,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-29 11:04:28,779 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 65 flow [2025-04-29 11:04:28,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-29 11:04:28,780 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2025-04-29 11:04:28,780 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 65 flow [2025-04-29 11:04:28,780 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2025-04-29 11:04:28,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:28,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:28,780 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:04:28,780 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:28,780 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:28,781 INFO L85 PathProgramCache]: Analyzing trace with hash 423202844, now seen corresponding path program 1 times [2025-04-29 11:04:28,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:28,781 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380648836] [2025-04-29 11:04:28,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:28,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-29 11:04:28,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-29 11:04:28,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:28,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:28,838 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380648836] [2025-04-29 11:04:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380648836] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:04:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199938424] [2025-04-29 11:04:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:28,838 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:04:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:28,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:04:28,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:28,847 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2025-04-29 11:04:28,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:28,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:28,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2025-04-29 11:04:28,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:28,911 INFO L116 PetriNetUnfolderBase]: 84/192 cut-off events. [2025-04-29 11:04:28,911 INFO L117 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-04-29 11:04:28,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 192 events. 84/192 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 749 event pairs, 58 based on Foata normal form. 8/185 useless extension candidates. Maximal degree in co-relation 152. Up to 132 conditions per place. [2025-04-29 11:04:28,913 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 15 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-04-29 11:04:28,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 107 flow [2025-04-29 11:04:28,914 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:04:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-29 11:04:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-04-29 11:04:28,914 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-04-29 11:04:28,914 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 65 flow. Second operand 4 states and 63 transitions. [2025-04-29 11:04:28,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 107 flow [2025-04-29 11:04:28,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 101 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:28,915 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 63 flow [2025-04-29 11:04:28,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2025-04-29 11:04:28,918 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2025-04-29 11:04:28,918 INFO L485 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 63 flow [2025-04-29 11:04:28,919 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:28,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:28,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:28,919 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:04:28,919 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:28,919 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash 608732390, now seen corresponding path program 1 times [2025-04-29 11:04:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:28,920 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637734726] [2025-04-29 11:04:28,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:28,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:28,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:04:28,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:04:28,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:28,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:29,003 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637734726] [2025-04-29 11:04:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637734726] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:29,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:29,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447486381] [2025-04-29 11:04:29,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:29,004 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:04:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:29,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:04:29,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:04:29,004 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2025-04-29 11:04:29,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:29,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:29,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2025-04-29 11:04:29,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:29,040 INFO L116 PetriNetUnfolderBase]: 32/108 cut-off events. [2025-04-29 11:04:29,041 INFO L117 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-04-29 11:04:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 108 events. 32/108 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 322 event pairs, 7 based on Foata normal form. 14/118 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2025-04-29 11:04:29,043 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 13 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2025-04-29 11:04:29,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 109 flow [2025-04-29 11:04:29,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:04:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:04:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-04-29 11:04:29,045 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-29 11:04:29,045 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 63 flow. Second operand 3 states and 63 transitions. [2025-04-29 11:04:29,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 109 flow [2025-04-29 11:04:29,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 103 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:29,046 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 67 flow [2025-04-29 11:04:29,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2025-04-29 11:04:29,046 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2025-04-29 11:04:29,046 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 67 flow [2025-04-29 11:04:29,046 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:29,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:29,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:29,046 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:04:29,046 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:29,047 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2056955480, now seen corresponding path program 1 times [2025-04-29 11:04:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:29,047 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009914348] [2025-04-29 11:04:29,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:29,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-29 11:04:29,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-29 11:04:29,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:29,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:29,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:29,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009914348] [2025-04-29 11:04:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009914348] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:29,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:29,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:04:29,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572827742] [2025-04-29 11:04:29,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:29,120 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-29 11:04:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:29,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-29 11:04:29,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:04:29,137 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2025-04-29 11:04:29,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-04-29 11:04:29,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:29,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2025-04-29 11:04:29,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:29,190 INFO L116 PetriNetUnfolderBase]: 41/113 cut-off events. [2025-04-29 11:04:29,190 INFO L117 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-04-29 11:04:29,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 113 events. 41/113 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 320 event pairs, 15 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 113. Up to 41 conditions per place. [2025-04-29 11:04:29,191 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 18 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2025-04-29 11:04:29,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 125 flow [2025-04-29 11:04:29,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-29 11:04:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-29 11:04:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-04-29 11:04:29,192 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3287037037037037 [2025-04-29 11:04:29,192 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 67 flow. Second operand 6 states and 71 transitions. [2025-04-29 11:04:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 125 flow [2025-04-29 11:04:29,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:04:29,194 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 68 flow [2025-04-29 11:04:29,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2025-04-29 11:04:29,194 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2025-04-29 11:04:29,194 INFO L485 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 68 flow [2025-04-29 11:04:29,194 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2025-04-29 11:04:29,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:29,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:29,194 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:04:29,195 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-04-29 11:04:29,195 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -96630038, now seen corresponding path program 1 times [2025-04-29 11:04:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:29,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625396487] [2025-04-29 11:04:29,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:29,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-29 11:04:29,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-29 11:04:29,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:29,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:04:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:29,235 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625396487] [2025-04-29 11:04:29,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625396487] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:29,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:29,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:04:29,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815007380] [2025-04-29 11:04:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:29,236 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:04:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:29,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:04:29,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:04:29,240 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2025-04-29 11:04:29,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-04-29 11:04:29,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:29,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2025-04-29 11:04:29,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:29,279 INFO L116 PetriNetUnfolderBase]: 35/100 cut-off events. [2025-04-29 11:04:29,280 INFO L117 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2025-04-29 11:04:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 100 events. 35/100 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 297 event pairs, 23 based on Foata normal form. 4/98 useless extension candidates. Maximal degree in co-relation 97. Up to 72 conditions per place. [2025-04-29 11:04:29,280 INFO L140 encePairwiseOnDemand]: 34/36 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2025-04-29 11:04:29,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 102 flow [2025-04-29 11:04:29,280 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:04:29,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:04:29,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2025-04-29 11:04:29,281 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2025-04-29 11:04:29,281 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 68 flow. Second operand 3 states and 53 transitions. [2025-04-29 11:04:29,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 102 flow [2025-04-29 11:04:29,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 93 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-04-29 11:04:29,282 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2025-04-29 11:04:29,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2025-04-29 11:04:29,282 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2025-04-29 11:04:29,282 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2025-04-29 11:04:29,282 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-04-29 11:04:29,284 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2025-04-29 11:04:29,284 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-04-29 11:04:29,284 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-04-29 11:04:29,286 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-04-29 11:04:29,287 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-04-29 11:04:29,287 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 11:04:29,287 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-29 11:04:29,290 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:04:29,290 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:04:29,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:04:29 BasicIcfg [2025-04-29 11:04:29,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:04:29,295 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:04:29,295 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:04:29,295 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:04:29,296 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:28" (3/4) ... [2025-04-29 11:04:29,297 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:04:29,299 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-29 11:04:29,299 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-29 11:04:29,302 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2025-04-29 11:04:29,302 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-04-29 11:04:29,302 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-29 11:04:29,302 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:04:29,352 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:04:29,353 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:04:29,353 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:04:29,354 INFO L158 Benchmark]: Toolchain (without parser) took 1781.26ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 105.0MB in the end (delta: 6.7MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2025-04-29 11:04:29,354 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:29,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.25ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 97.7MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:29,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.42ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:29,355 INFO L158 Benchmark]: Boogie Preprocessor took 37.15ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:29,355 INFO L158 Benchmark]: RCFGBuilder took 274.89ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 76.9MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:29,355 INFO L158 Benchmark]: TraceAbstraction took 1154.04ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 109.8MB in the end (delta: -33.9MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2025-04-29 11:04:29,356 INFO L158 Benchmark]: Witness Printer took 57.38ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 105.0MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:29,356 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.25ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 97.7MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.42ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.15ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.89ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 76.9MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1154.04ms. Allocated memory is still 142.6MB. Free memory was 75.9MB in the beginning and 109.8MB in the end (delta: -33.9MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * Witness Printer took 57.38ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 105.0MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 63 locations, 66 edges, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 255 IncrementalHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 14 mSDtfsCounter, 255 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:04:29,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE