./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:12:56,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:12:56,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:12:56,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:12:56,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:12:56,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:12:56,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:12:56,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:12:56,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:12:56,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:12:56,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:12:56,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:12:56,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:12:56,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:12:56,842 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:12:56,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:12:56,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:12:56,843 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:12:56,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:12:56,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:12:56,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:12:56,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:12:56,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:12:56,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:12:56,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:12:56,846 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:12:56,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:12:56,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:12:56,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:12:56,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:12:56,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:12:56,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:12:56,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:12:56,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:12:56,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:56,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:12:56,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:12:56,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:12:56,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:12:56,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:12:56,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:12:56,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:12:56,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:12:56,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:12:56,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-11-09 15:12:57,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:12:57,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:12:57,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:12:57,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:12:57,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:12:57,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-09 15:12:58,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:12:58,710 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:12:58,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-09 15:12:58,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/432968657/cebb3ef16b6c48159ab69cabd7fa5d65/FLAGb862e9723 [2024-11-09 15:12:59,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/432968657/cebb3ef16b6c48159ab69cabd7fa5d65 [2024-11-09 15:12:59,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:12:59,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:12:59,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:59,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:12:59,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:12:59,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a11343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59, skipping insertion in model container [2024-11-09 15:12:59,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:12:59,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:59,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:12:59,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:12:59,487 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:12:59,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59 WrapperNode [2024-11-09 15:12:59,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:12:59,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:59,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:12:59,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:12:59,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,544 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 344 [2024-11-09 15:12:59,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:12:59,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:12:59,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:12:59,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:12:59,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,594 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-09 15:12:59,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:12:59,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:12:59,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:12:59,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:12:59,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (1/1) ... [2024-11-09 15:12:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:12:59,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:12:59,660 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) [2024-11-09 15:12:59,663 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 [2024-11-09 15:12:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:12:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:12:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:12:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:12:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:12:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:12:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:12:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:12:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:12:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:12:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:12:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 15:12:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:12:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:12:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:12:59,711 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:12:59,860 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:12:59,863 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:13:00,375 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:13:00,376 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:13:00,927 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:13:00,928 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 15:13:00,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:00 BoogieIcfgContainer [2024-11-09 15:13:00,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:13:00,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:13:00,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:13:00,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:13:00,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:12:59" (1/3) ... [2024-11-09 15:13:00,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a4da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:00, skipping insertion in model container [2024-11-09 15:13:00,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:12:59" (2/3) ... [2024-11-09 15:13:00,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a4da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:13:00, skipping insertion in model container [2024-11-09 15:13:00,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:13:00" (3/3) ... [2024-11-09 15:13:00,940 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-11-09 15:13:00,958 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:13:00,958 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-09 15:13:00,958 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:13:01,146 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 15:13:01,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-09 15:13:01,244 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-09 15:13:01,245 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 15:13:01,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-09 15:13:01,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-09 15:13:01,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-09 15:13:01,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:13:01,270 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;@28e877b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:13:01,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-09 15:13:01,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:13:01,274 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:13:01,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:13:01,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:01,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:13:01,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:01,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:01,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1083356, now seen corresponding path program 1 times [2024-11-09 15:13:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:01,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983657518] [2024-11-09 15:13:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:01,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:01,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983657518] [2024-11-09 15:13:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983657518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:01,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016031789] [2024-11-09 15:13:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:01,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:01,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:01,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-09 15:13:01,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:01,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:01,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-09 15:13:01,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:08,162 INFO L124 PetriNetUnfolderBase]: 38398/51624 cut-off events. [2024-11-09 15:13:08,163 INFO L125 PetriNetUnfolderBase]: For 1386/1386 co-relation queries the response was YES. [2024-11-09 15:13:08,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101334 conditions, 51624 events. 38398/51624 cut-off events. For 1386/1386 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375403 event pairs, 28674 based on Foata normal form. 2/24152 useless extension candidates. Maximal degree in co-relation 95424. Up to 47902 conditions per place. [2024-11-09 15:13:08,672 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 49 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-09 15:13:08,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 281 flow [2024-11-09 15:13:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:13:08,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:13:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-09 15:13:08,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-09 15:13:08,688 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-09 15:13:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 281 flow [2024-11-09 15:13:09,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 15:13:09,066 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2024-11-09 15:13:09,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-09 15:13:09,074 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2024-11-09 15:13:09,075 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2024-11-09 15:13:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:09,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:09,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:13:09,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:13:09,077 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:09,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash -2084387767, now seen corresponding path program 1 times [2024-11-09 15:13:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729545887] [2024-11-09 15:13:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:09,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:09,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729545887] [2024-11-09 15:13:09,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729545887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:09,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826705589] [2024-11-09 15:13:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:09,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:09,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:13:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:09,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:09,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:09,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:13:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826705589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:13:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:13:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101837866] [2024-11-09 15:13:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:09,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:13:09,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:13:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:13:09,508 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-09 15:13:09,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:09,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:09,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-09 15:13:09,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:14,297 INFO L124 PetriNetUnfolderBase]: 38398/51622 cut-off events. [2024-11-09 15:13:14,298 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-09 15:13:14,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100632 conditions, 51622 events. 38398/51622 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375063 event pairs, 28674 based on Foata normal form. 2/24153 useless extension candidates. Maximal degree in co-relation 100582. Up to 47892 conditions per place. [2024-11-09 15:13:14,671 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 42 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-09 15:13:14,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2024-11-09 15:13:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:13:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:13:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-09 15:13:14,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-11-09 15:13:14,674 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 188 transitions. [2024-11-09 15:13:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2024-11-09 15:13:14,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:13:14,677 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2024-11-09 15:13:14,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-09 15:13:14,678 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2024-11-09 15:13:14,678 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2024-11-09 15:13:14,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:14,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:14,679 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:13:14,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:13:14,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:14,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:14,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -191510237, now seen corresponding path program 1 times [2024-11-09 15:13:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943528496] [2024-11-09 15:13:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:14,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943528496] [2024-11-09 15:13:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943528496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:13:14,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246101943] [2024-11-09 15:13:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:14,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:13:14,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:13:14,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:13:14,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:13:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:15,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:13:15,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:13:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:15,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:13:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246101943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:13:15,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:13:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:13:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044586385] [2024-11-09 15:13:15,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:13:15,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:13:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:13:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:13:15,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-09 15:13:15,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:15,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:15,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-09 15:13:15,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:20,215 INFO L124 PetriNetUnfolderBase]: 38404/51646 cut-off events. [2024-11-09 15:13:20,216 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-09 15:13:20,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100726 conditions, 51646 events. 38404/51646 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375582 event pairs, 28674 based on Foata normal form. 6/24180 useless extension candidates. Maximal degree in co-relation 100584. Up to 47903 conditions per place. [2024-11-09 15:13:20,559 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-09 15:13:20,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2024-11-09 15:13:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:13:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:13:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-09 15:13:20,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2024-11-09 15:13:20,562 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 298 transitions. [2024-11-09 15:13:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2024-11-09 15:13:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-09 15:13:20,565 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2024-11-09 15:13:20,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-09 15:13:20,566 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2024-11-09 15:13:20,566 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2024-11-09 15:13:20,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:20,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:20,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:20,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 15:13:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 15:13:20,768 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -823509526, now seen corresponding path program 1 times [2024-11-09 15:13:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106465881] [2024-11-09 15:13:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:20,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106465881] [2024-11-09 15:13:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106465881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:20,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:20,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718543539] [2024-11-09 15:13:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:20,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:13:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:13:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:13:20,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-09 15:13:20,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:20,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:20,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-09 15:13:20,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:25,557 INFO L124 PetriNetUnfolderBase]: 40732/54120 cut-off events. [2024-11-09 15:13:25,557 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-09 15:13:25,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106510 conditions, 54120 events. 40732/54120 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5330. Compared 387329 event pairs, 30522 based on Foata normal form. 691/25974 useless extension candidates. Maximal degree in co-relation 106414. Up to 47918 conditions per place. [2024-11-09 15:13:26,077 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 108 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-09 15:13:26,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 753 flow [2024-11-09 15:13:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:13:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:13:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-09 15:13:26,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390243902439025 [2024-11-09 15:13:26,079 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 360 flow. Second operand 5 states and 221 transitions. [2024-11-09 15:13:26,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 753 flow [2024-11-09 15:13:26,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 719 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 15:13:26,083 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 383 flow [2024-11-09 15:13:26,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-11-09 15:13:26,084 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-09 15:13:26,084 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 383 flow [2024-11-09 15:13:26,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:26,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:26,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:26,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:13:26,085 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:26,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:26,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1684195610, now seen corresponding path program 1 times [2024-11-09 15:13:26,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780082235] [2024-11-09 15:13:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:26,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:26,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780082235] [2024-11-09 15:13:26,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780082235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:26,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:26,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:13:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979215469] [2024-11-09 15:13:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:26,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:26,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-09 15:13:26,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:26,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:26,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-09 15:13:26,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:13:30,467 INFO L124 PetriNetUnfolderBase]: 35422/49310 cut-off events. [2024-11-09 15:13:30,468 INFO L125 PetriNetUnfolderBase]: For 3716/3716 co-relation queries the response was YES. [2024-11-09 15:13:30,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106420 conditions, 49310 events. 35422/49310 cut-off events. For 3716/3716 co-relation queries the response was YES. Maximal size of possible extension queue 4875. Compared 379071 event pairs, 27018 based on Foata normal form. 0/24075 useless extension candidates. Maximal degree in co-relation 106325. Up to 44785 conditions per place. [2024-11-09 15:13:30,801 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 70 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2024-11-09 15:13:30,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 91 transitions, 523 flow [2024-11-09 15:13:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:13:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:13:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-09 15:13:30,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-11-09 15:13:30,802 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 383 flow. Second operand 3 states and 124 transitions. [2024-11-09 15:13:30,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 91 transitions, 523 flow [2024-11-09 15:13:30,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 519 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 15:13:30,810 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 379 flow [2024-11-09 15:13:30,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-11-09 15:13:30,811 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-09 15:13:30,811 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 379 flow [2024-11-09 15:13:30,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:30,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:13:30,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:13:30,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:13:30,812 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-09 15:13:30,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:13:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1684195611, now seen corresponding path program 1 times [2024-11-09 15:13:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:13:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635806085] [2024-11-09 15:13:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:13:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:13:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:13:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:13:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:13:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635806085] [2024-11-09 15:13:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635806085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:13:30,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:13:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:13:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935777623] [2024-11-09 15:13:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:13:30,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:13:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:13:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:13:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:13:30,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-09 15:13:30,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:13:30,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:13:30,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-09 15:13:30,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand