./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:47:42,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:47:42,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:47:42,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:47:42,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:47:42,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:47:42,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:47:42,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:47:42,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:47:42,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:47:42,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:47:42,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:47:42,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:47:42,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:47:42,824 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:47:42,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:47:42,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:47:42,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:47:42,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:47:42,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:47:42,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:47:42,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:47:42,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:47:42,826 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:47:42,826 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:47:42,827 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:47:42,828 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:47:42,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:47:42,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:47:42,828 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:47:42,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:42,829 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:47:42,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:47:42,830 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:47:42,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:47:42,830 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:47:42,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:47:42,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:47:42,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:47:42,832 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2024-10-13 16:47:43,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:47:43,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:47:43,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:47:43,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:47:43,104 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:47:43,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-10-13 16:47:44,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:47:44,606 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:47:44,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-10-13 16:47:44,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6535d60d8/ce083bbdbefc42a1ae56a82da7ee7dc6/FLAGd6ce52dd5 [2024-10-13 16:47:44,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6535d60d8/ce083bbdbefc42a1ae56a82da7ee7dc6 [2024-10-13 16:47:44,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:47:44,634 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:47:44,635 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:44,635 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:47:44,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:47:44,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65200405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44, skipping insertion in model container [2024-10-13 16:47:44,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:47:44,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:44,857 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:47:44,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:44,912 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:47:44,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44 WrapperNode [2024-10-13 16:47:44,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:44,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:44,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:47:44,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:47:44,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,954 INFO L138 Inliner]: procedures = 24, calls = 69, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 256 [2024-10-13 16:47:44,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:44,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:47:44,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:47:44,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:47:44,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,984 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 16:47:44,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:44,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:45,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:47:45,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:47:45,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:47:45,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:47:45,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (1/1) ... [2024-10-13 16:47:45,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:45,035 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) [2024-10-13 16:47:45,038 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 [2024-10-13 16:47:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:47:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:47:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:47:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:47:45,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:47:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:47:45,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:47:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 16:47:45,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 16:47:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:47:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-13 16:47:45,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-13 16:47:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-13 16:47:45,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-13 16:47:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:47:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:47:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:47:45,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:47:45,079 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:47:45,197 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:47:45,201 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:47:45,510 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:47:45,511 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:47:45,722 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:47:45,723 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 16:47:45,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:45 BoogieIcfgContainer [2024-10-13 16:47:45,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:47:45,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:47:45,726 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:47:45,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:47:45,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:47:44" (1/3) ... [2024-10-13 16:47:45,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d37d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:45, skipping insertion in model container [2024-10-13 16:47:45,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:44" (2/3) ... [2024-10-13 16:47:45,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251d37d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:45, skipping insertion in model container [2024-10-13 16:47:45,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:45" (3/3) ... [2024-10-13 16:47:45,733 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-10-13 16:47:45,748 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:47:45,749 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-13 16:47:45,749 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:47:45,826 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-10-13 16:47:45,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 88 transitions, 242 flow [2024-10-13 16:47:45,888 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-10-13 16:47:45,888 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:47:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 76 events. 4/76 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 89. Up to 3 conditions per place. [2024-10-13 16:47:45,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 88 transitions, 242 flow [2024-10-13 16:47:45,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 74 transitions, 193 flow [2024-10-13 16:47:45,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:47:45,916 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@51ce6f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:47:45,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-10-13 16:47:45,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:47:45,922 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-10-13 16:47:45,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:47:45,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:45,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:45,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-10-13 16:47:45,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 292280650, now seen corresponding path program 1 times [2024-10-13 16:47:45,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:45,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307836887] [2024-10-13 16:47:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:45,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307836887] [2024-10-13 16:47:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307836887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889752586] [2024-10-13 16:47:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:46,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:46,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-13 16:47:46,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:47:46,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:46,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-13 16:47:46,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:48:09,553 INFO L124 PetriNetUnfolderBase]: 330838/420475 cut-off events. [2024-10-13 16:48:09,554 INFO L125 PetriNetUnfolderBase]: For 21255/21255 co-relation queries the response was YES. [2024-10-13 16:48:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868156 conditions, 420475 events. 330838/420475 cut-off events. For 21255/21255 co-relation queries the response was YES. Maximal size of possible extension queue 14063. Compared 2951880 event pairs, 182343 based on Foata normal form. 0/284008 useless extension candidates. Maximal degree in co-relation 866655. Up to 232120 conditions per place. [2024-10-13 16:48:12,447 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 96 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-10-13 16:48:12,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 493 flow [2024-10-13 16:48:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:48:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:48:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-10-13 16:48:12,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-10-13 16:48:12,459 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 193 flow. Second operand 4 states and 180 transitions. [2024-10-13 16:48:12,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 493 flow [2024-10-13 16:48:23,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 449 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-13 16:48:23,472 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 168 flow [2024-10-13 16:48:23,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-10-13 16:48:23,478 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -9 predicate places. [2024-10-13 16:48:23,478 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 168 flow [2024-10-13 16:48:23,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:23,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:48:23,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:48:23,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:48:23,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-10-13 16:48:23,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:48:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash 292280651, now seen corresponding path program 1 times [2024-10-13 16:48:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:48:23,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034280040] [2024-10-13 16:48:23,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:48:23,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:48:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:48:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:48:23,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:48:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034280040] [2024-10-13 16:48:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034280040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:48:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:48:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:48:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931524985] [2024-10-13 16:48:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:48:23,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:48:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:48:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:48:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:48:23,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-13 16:48:23,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:48:23,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:48:23,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-13 16:48:23,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand