./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.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/lazy01.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 bfea4678daad8114ef6a8d147d72de07e7b5a33c83560c1b2b84eeb110fd312c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:04:22,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:04:22,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-04-29 11:04:22,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:04:22,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:04:22,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:04:22,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:04:22,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:04:22,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:04:22,845 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:04:22,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:04:22,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:04:22,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:04:22,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:04:22,848 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:04:22,849 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:22,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:04:22,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:22,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:04:22,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:04:22,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:04:22,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:04:22,851 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 -> bfea4678daad8114ef6a8d147d72de07e7b5a33c83560c1b2b84eeb110fd312c [2025-04-29 11:04:23,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:04:23,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:04:23,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:04:23,061 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:04:23,061 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:04:23,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.c [2025-04-29 11:04:24,293 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/302f60b1d/705bc945c86941de99efa7e6b016ab99/FLAG07d80dea5 [2025-04-29 11:04:24,507 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:04:24,509 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.c [2025-04-29 11:04:24,510 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:24,510 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:24,510 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:04:24,517 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/302f60b1d/705bc945c86941de99efa7e6b016ab99/FLAG07d80dea5 [2025-04-29 11:04:25,294 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/302f60b1d/705bc945c86941de99efa7e6b016ab99 [2025-04-29 11:04:25,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:04:25,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:04:25,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:25,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:04:25,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:04:25,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9c66ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25, skipping insertion in model container [2025-04-29 11:04:25,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:04:25,471 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:25,480 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:04:25,507 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:04:25,520 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:04:25,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25 WrapperNode [2025-04-29 11:04:25,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:04:25,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:25,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:04:25,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:04:25,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,548 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2025-04-29 11:04:25,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:04:25,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:04:25,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:04:25,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:04:25,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,571 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 11:04:25,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,575 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:04:25,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:04:25,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:04:25,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:04:25,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (1/1) ... [2025-04-29 11:04:25,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:04:25,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:04:25,615 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 11:04:25,617 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 11:04:25,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-29 11:04:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-29 11:04:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-29 11:04:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:04:25,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:04:25,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:04:25,635 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 11:04:25,700 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:04:25,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:04:25,796 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:04:25,796 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:04:25,844 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:04:25,845 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:04:25,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:25 BoogieIcfgContainer [2025-04-29 11:04:25,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:04:25,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:04:25,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:04:25,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:04:25,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:04:25" (1/3) ... [2025-04-29 11:04:25,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f2648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:25, skipping insertion in model container [2025-04-29 11:04:25,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:04:25" (2/3) ... [2025-04-29 11:04:25,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1f2648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:04:25, skipping insertion in model container [2025-04-29 11:04:25,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:25" (3/3) ... [2025-04-29 11:04:25,852 INFO L128 eAbstractionObserver]: Analyzing ICFG lazy01.c [2025-04-29 11:04:25,861 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:04:25,863 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.c that has 4 procedures, 38 locations, 34 edges, 1 initial locations, 0 loop locations, and 4 error locations. [2025-04-29 11:04:25,863 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:04:25,909 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-29 11:04:25,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 37 transitions, 95 flow [2025-04-29 11:04:25,965 INFO L116 PetriNetUnfolderBase]: 0/34 cut-off events. [2025-04-29 11:04:25,967 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-29 11:04:25,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 0/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-29 11:04:25,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 37 transitions, 95 flow [2025-04-29 11:04:25,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 74 flow [2025-04-29 11:04:25,984 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:04:25,994 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;@1fa67e0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:04:25,995 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-29 11:04:26,000 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:04:26,000 INFO L116 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-04-29 11:04:26,000 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-29 11:04:26,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:26,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-29 11:04:26,001 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:26,007 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1884312735, now seen corresponding path program 1 times [2025-04-29 11:04:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:26,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140878073] [2025-04-29 11:04:26,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:26,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:26,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-29 11:04:26,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-29 11:04:26,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:26,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:26,191 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 11:04:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:26,192 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140878073] [2025-04-29 11:04:26,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140878073] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:26,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:26,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:04:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100330256] [2025-04-29 11:04:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:26,198 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:04:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:26,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:04:26,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:04:26,237 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-04-29 11:04:26,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:26,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:26,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-04-29 11:04:26,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:26,575 INFO L116 PetriNetUnfolderBase]: 1092/1753 cut-off events. [2025-04-29 11:04:26,576 INFO L117 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-04-29 11:04:26,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 1753 events. 1092/1753 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9080 event pairs, 280 based on Foata normal form. 96/1765 useless extension candidates. Maximal degree in co-relation 3345. Up to 1414 conditions per place. [2025-04-29 11:04:26,591 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2025-04-29 11:04:26,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 279 flow [2025-04-29 11:04:26,593 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:04:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 11:04:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-04-29 11:04:26,605 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2025-04-29 11:04:26,607 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 5 states and 113 transitions. [2025-04-29 11:04:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 279 flow [2025-04-29 11:04:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-29 11:04:26,617 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 101 flow [2025-04-29 11:04:26,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-04-29 11:04:26,624 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2025-04-29 11:04:26,624 INFO L485 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 101 flow [2025-04-29 11:04:26,624 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:26,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:26,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:26,624 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:04:26,624 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:26,625 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -843555010, now seen corresponding path program 1 times [2025-04-29 11:04:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:26,626 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208748320] [2025-04-29 11:04:26,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:26,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:04:26,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:04:26,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:26,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:26,713 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 11:04:26,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:26,713 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208748320] [2025-04-29 11:04:26,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208748320] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:26,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:26,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:26,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676335087] [2025-04-29 11:04:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:26,714 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:04:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:26,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:04:26,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:04:26,715 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2025-04-29 11:04:26,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 101 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 11:04:26,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2025-04-29 11:04:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:26,810 INFO L116 PetriNetUnfolderBase]: 175/500 cut-off events. [2025-04-29 11:04:26,810 INFO L117 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2025-04-29 11:04:26,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 500 events. 175/500 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2769 event pairs, 44 based on Foata normal form. 89/587 useless extension candidates. Maximal degree in co-relation 1006. Up to 250 conditions per place. [2025-04-29 11:04:26,813 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 25 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2025-04-29 11:04:26,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 186 flow [2025-04-29 11:04:26,813 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:04:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:04:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-04-29 11:04:26,814 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2025-04-29 11:04:26,814 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 101 flow. Second operand 3 states and 72 transitions. [2025-04-29 11:04:26,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 186 flow [2025-04-29 11:04:26,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 175 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-29 11:04:26,817 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 102 flow [2025-04-29 11:04:26,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2025-04-29 11:04:26,818 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2025-04-29 11:04:26,818 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 102 flow [2025-04-29 11:04:26,818 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 11:04:26,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:26,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:26,818 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:04:26,819 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:26,819 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1705162527, now seen corresponding path program 1 times [2025-04-29 11:04:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:26,819 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368532719] [2025-04-29 11:04:26,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:26,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:26,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-29 11:04:26,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-29 11:04:26,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:26,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:26,915 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 11:04:26,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:26,916 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368532719] [2025-04-29 11:04:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368532719] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48900786] [2025-04-29 11:04:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:26,917 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:04:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:26,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:04:26,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:04:26,930 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-04-29 11:04:26,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:26,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:26,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-04-29 11:04:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:27,035 INFO L116 PetriNetUnfolderBase]: 245/535 cut-off events. [2025-04-29 11:04:27,036 INFO L117 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2025-04-29 11:04:27,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 535 events. 245/535 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2508 event pairs, 84 based on Foata normal form. 19/546 useless extension candidates. Maximal degree in co-relation 904. Up to 393 conditions per place. [2025-04-29 11:04:27,038 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 38 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2025-04-29 11:04:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 232 flow [2025-04-29 11:04:27,039 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:04:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 11:04:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2025-04-29 11:04:27,040 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2025-04-29 11:04:27,040 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 102 flow. Second operand 5 states and 88 transitions. [2025-04-29 11:04:27,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 232 flow [2025-04-29 11:04:27,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:04:27,041 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 100 flow [2025-04-29 11:04:27,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2025-04-29 11:04:27,044 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2025-04-29 11:04:27,045 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 100 flow [2025-04-29 11:04:27,045 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:27,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:27,045 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:04:27,045 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:27,046 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash -545567681, now seen corresponding path program 1 times [2025-04-29 11:04:27,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:27,046 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835077492] [2025-04-29 11:04:27,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:27,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-29 11:04:27,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-29 11:04:27,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:27,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:27,117 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 11:04:27,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:27,118 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835077492] [2025-04-29 11:04:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835077492] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302563548] [2025-04-29 11:04:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:27,119 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:04:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:27,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:04:27,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:04:27,130 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-04-29 11:04:27,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:27,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-04-29 11:04:27,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:27,242 INFO L116 PetriNetUnfolderBase]: 223/493 cut-off events. [2025-04-29 11:04:27,242 INFO L117 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2025-04-29 11:04:27,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 493 events. 223/493 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2274 event pairs, 58 based on Foata normal form. 16/500 useless extension candidates. Maximal degree in co-relation 774. Up to 148 conditions per place. [2025-04-29 11:04:27,245 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2025-04-29 11:04:27,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 259 flow [2025-04-29 11:04:27,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:04:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 11:04:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2025-04-29 11:04:27,246 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2025-04-29 11:04:27,246 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 100 flow. Second operand 5 states and 95 transitions. [2025-04-29 11:04:27,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 259 flow [2025-04-29 11:04:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:27,247 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 100 flow [2025-04-29 11:04:27,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2025-04-29 11:04:27,248 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2025-04-29 11:04:27,248 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 100 flow [2025-04-29 11:04:27,248 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:27,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:27,249 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:04:27,249 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:27,249 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1663512862, now seen corresponding path program 1 times [2025-04-29 11:04:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:27,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912885102] [2025-04-29 11:04:27,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:27,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:04:27,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:04:27,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:27,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:27,315 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 11:04:27,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:27,315 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912885102] [2025-04-29 11:04:27,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912885102] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:27,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458803779] [2025-04-29 11:04:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:27,316 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:04:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:27,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:04:27,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:04:27,325 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-04-29 11:04:27,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:27,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-04-29 11:04:27,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:27,419 INFO L116 PetriNetUnfolderBase]: 197/452 cut-off events. [2025-04-29 11:04:27,420 INFO L117 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2025-04-29 11:04:27,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 452 events. 197/452 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2092 event pairs, 65 based on Foata normal form. 16/463 useless extension candidates. Maximal degree in co-relation 740. Up to 180 conditions per place. [2025-04-29 11:04:27,422 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 2 changer transitions 22/53 dead transitions. [2025-04-29 11:04:27,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 252 flow [2025-04-29 11:04:27,422 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:04:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 11:04:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2025-04-29 11:04:27,423 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2025-04-29 11:04:27,423 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 100 flow. Second operand 5 states and 93 transitions. [2025-04-29 11:04:27,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 252 flow [2025-04-29 11:04:27,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 242 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:27,424 INFO L231 Difference]: Finished difference. Result has 45 places, 24 transitions, 70 flow [2025-04-29 11:04:27,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=5, PETRI_FLOW=70, PETRI_PLACES=45, PETRI_TRANSITIONS=24} [2025-04-29 11:04:27,425 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2025-04-29 11:04:27,425 INFO L485 AbstractCegarLoop]: Abstraction has has 45 places, 24 transitions, 70 flow [2025-04-29 11:04:27,425 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:04:27,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:04:27,426 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:04:27,426 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-04-29 11:04:27,426 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:04:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash 267271289, now seen corresponding path program 1 times [2025-04-29 11:04:27,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:04:27,427 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725562285] [2025-04-29 11:04:27,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:04:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:04:27,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:04:27,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:04:27,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:04:27,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:04:27,485 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 11:04:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:04:27,486 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725562285] [2025-04-29 11:04:27,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725562285] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:04:27,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:04:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:04:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17622030] [2025-04-29 11:04:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:04:27,487 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:04:27,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:04:27,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:04:27,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:04:27,502 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2025-04-29 11:04:27,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 24 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:04:27,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2025-04-29 11:04:27,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:04:27,556 INFO L116 PetriNetUnfolderBase]: 97/222 cut-off events. [2025-04-29 11:04:27,556 INFO L117 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-04-29 11:04:27,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 222 events. 97/222 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 767 event pairs, 32 based on Foata normal form. 16/233 useless extension candidates. Maximal degree in co-relation 497. Up to 103 conditions per place. [2025-04-29 11:04:27,557 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2025-04-29 11:04:27,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 159 flow [2025-04-29 11:04:27,557 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:04:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-29 11:04:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-04-29 11:04:27,558 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2025-04-29 11:04:27,558 INFO L175 Difference]: Start difference. First operand has 45 places, 24 transitions, 70 flow. Second operand 5 states and 76 transitions. [2025-04-29 11:04:27,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 159 flow [2025-04-29 11:04:27,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 153 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-04-29 11:04:27,561 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2025-04-29 11:04:27,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2025-04-29 11:04:27,561 INFO L279 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2025-04-29 11:04:27,561 INFO L485 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2025-04-29 11:04:27,561 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-04-29 11:04:27,564 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-04-29 11:04:27,564 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 11:04:27,565 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-04-29 11:04:27,569 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:04:27,569 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:04:27,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:04:27 BasicIcfg [2025-04-29 11:04:27,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:04:27,575 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:04:27,575 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:04:27,575 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:04:27,576 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:04:25" (3/4) ... [2025-04-29 11:04:27,577 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:04:27,578 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-29 11:04:27,578 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-29 11:04:27,578 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-04-29 11:04:27,581 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-04-29 11:04:27,582 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-04-29 11:04:27,582 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-29 11:04:27,636 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:04:27,636 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:04:27,636 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:04:27,637 INFO L158 Benchmark]: Toolchain (without parser) took 2339.61ms. Allocated memory is still 142.6MB. Free memory was 108.0MB in the beginning and 64.1MB in the end (delta: 44.0MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2025-04-29 11:04:27,637 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:27,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.73ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 93.1MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:27,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.84ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 91.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:27,638 INFO L158 Benchmark]: Boogie Preprocessor took 37.67ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:04:27,639 INFO L158 Benchmark]: RCFGBuilder took 256.27ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 72.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:04:27,639 INFO L158 Benchmark]: TraceAbstraction took 1727.84ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 70.2MB in the end (delta: 2.7MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. [2025-04-29 11:04:27,639 INFO L158 Benchmark]: Witness Printer took 61.24ms. Allocated memory is still 142.6MB. Free memory was 70.2MB in the beginning and 64.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:04:27,640 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.73ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 93.1MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.84ms. Allocated memory is still 142.6MB. Free memory was 93.1MB in the beginning and 91.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.67ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 256.27ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 72.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1727.84ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 70.2MB in the end (delta: 2.7MB). Peak memory consumption was 1.0MB. Max. memory is 16.1GB. * Witness Printer took 61.24ms. Allocated memory is still 142.6MB. Free memory was 70.2MB in the beginning and 64.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: 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 7 procedures, 67 locations, 66 edges, 11 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: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 571 IncrementalHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 21 mSDtfsCounter, 571 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=2, InterpolantAutomatonStates: 28, 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, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 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 11:04:27,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE