./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f 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-min-max-inc.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 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:46:13,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:46:13,789 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:46:13,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:46:13,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:46:13,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:46:13,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:46:13,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:46:13,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:46:13,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:46:13,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:46:13,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:46:13,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:46:13,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:46:13,836 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:46:13,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:46:13,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:46:13,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:46:13,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:46:13,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:46:13,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:46:13,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:46:13,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:46:13,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:46:13,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:46:13,839 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:46:13,840 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:46:13,840 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:46:13,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:46:13,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:46:13,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:46:13,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:46:13,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:46:13,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:46:13,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:46:13,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:46:13,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:46:13,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:46:13,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:46:13,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:46:13,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:46:13,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:46:13,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:46:13,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:46:13,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2024-11-12 20:46:14,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:46:14,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:46:14,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:46:14,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:46:14,142 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:46:14,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-12 20:46:15,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:46:15,875 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:46:15,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-12 20:46:15,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f48c8fc/878279c14b7d47fa9425c6a78194d5f8/FLAGcd57788af [2024-11-12 20:46:15,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f48c8fc/878279c14b7d47fa9425c6a78194d5f8 [2024-11-12 20:46:15,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:46:15,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:46:15,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:46:15,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:46:15,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:46:15,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:46:15" (1/1) ... [2024-11-12 20:46:15,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6c0ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:15, skipping insertion in model container [2024-11-12 20:46:15,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:46:15" (1/1) ... [2024-11-12 20:46:15,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:46:16,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:46:16,157 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:46:16,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:46:16,198 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:46:16,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16 WrapperNode [2024-11-12 20:46:16,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:46:16,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:46:16,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:46:16,200 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:46:16,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,237 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 126 [2024-11-12 20:46:16,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:46:16,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:46:16,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:46:16,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:46:16,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,274 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-12 20:46:16,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:46:16,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:46:16,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:46:16,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:46:16,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (1/1) ... [2024-11-12 20:46:16,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:46:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:16,343 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) [2024-11-12 20:46:16,350 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 [2024-11-12 20:46:16,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:46:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:46:16,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:46:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:46:16,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:46:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:46:16,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:46:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 20:46:16,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 20:46:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:46:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:46:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:46:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:46:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:46:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:46:16,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:46:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:46:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:46:16,426 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:46:16,587 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:46:16,590 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:46:16,979 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:46:16,979 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:46:17,179 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:46:17,180 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 20:46:17,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:46:17 BoogieIcfgContainer [2024-11-12 20:46:17,180 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:46:17,182 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:46:17,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:46:17,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:46:17,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:46:15" (1/3) ... [2024-11-12 20:46:17,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3321155a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:46:17, skipping insertion in model container [2024-11-12 20:46:17,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:46:16" (2/3) ... [2024-11-12 20:46:17,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3321155a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:46:17, skipping insertion in model container [2024-11-12 20:46:17,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:46:17" (3/3) ... [2024-11-12 20:46:17,188 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-11-12 20:46:17,212 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:46:17,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-12 20:46:17,212 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:46:17,300 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 20:46:17,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-11-12 20:46:17,386 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-12 20:46:17,387 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 20:46:17,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-12 20:46:17,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-11-12 20:46:17,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2024-11-12 20:46:17,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:46:17,423 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;@49fe6a62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:46:17,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-12 20:46:17,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:46:17,428 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-12 20:46:17,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:46:17,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:17,428 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:46:17,429 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:17,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash 508805331, now seen corresponding path program 1 times [2024-11-12 20:46:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:17,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801634130] [2024-11-12 20:46:17,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:17,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801634130] [2024-11-12 20:46:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801634130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:17,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:46:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053561233] [2024-11-12 20:46:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:17,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:17,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-12 20:46:17,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 20:46:17,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:17,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-12 20:46:17,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:21,129 INFO L124 PetriNetUnfolderBase]: 17677/29142 cut-off events. [2024-11-12 20:46:21,130 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-12 20:46:21,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 29142 events. 17677/29142 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246080 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 49383. Up to 21575 conditions per place. [2024-11-12 20:46:21,462 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-12 20:46:21,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 273 flow [2024-11-12 20:46:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:46:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:46:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-12 20:46:21,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-12 20:46:21,477 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 207 transitions. [2024-11-12 20:46:21,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 273 flow [2024-11-12 20:46:21,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 20:46:21,491 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2024-11-12 20:46:21,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-12 20:46:21,498 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-11-12 20:46:21,498 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2024-11-12 20:46:21,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 20:46:21,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:21,499 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:21,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:46:21,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:21,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 880540487, now seen corresponding path program 1 times [2024-11-12 20:46:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541207214] [2024-11-12 20:46:21,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541207214] [2024-11-12 20:46:21,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541207214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671353717] [2024-11-12 20:46:21,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:21,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:21,679 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) [2024-11-12 20:46:21,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:46:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:21,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:46:21,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:21,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:46:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671353717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:46:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:46:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378938949] [2024-11-12 20:46:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:21,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:46:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:46:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:46:21,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-12 20:46:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2024-11-12 20:46:21,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:21,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-12 20:46:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:24,411 INFO L124 PetriNetUnfolderBase]: 17677/29141 cut-off events. [2024-11-12 20:46:24,412 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-12 20:46:24,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51671 conditions, 29141 events. 17677/29141 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246035 event pairs, 12761 based on Foata normal form. 1/25265 useless extension candidates. Maximal degree in co-relation 51644. Up to 21570 conditions per place. [2024-11-12 20:46:24,678 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-12 20:46:24,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 277 flow [2024-11-12 20:46:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:46:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:46:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-12 20:46:24,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-12 20:46:24,683 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 285 transitions. [2024-11-12 20:46:24,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 277 flow [2024-11-12 20:46:24,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:46:24,689 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2024-11-12 20:46:24,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-12 20:46:24,690 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2024-11-12 20:46:24,690 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2024-11-12 20:46:24,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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) [2024-11-12 20:46:24,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:24,691 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-12 20:46:24,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:46:24,895 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 [2024-11-12 20:46:24,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:24,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1526951836, now seen corresponding path program 1 times [2024-11-12 20:46:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:24,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895671970] [2024-11-12 20:46:24,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895671970] [2024-11-12 20:46:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895671970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994140573] [2024-11-12 20:46:25,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:25,052 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) [2024-11-12 20:46:25,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:46:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:25,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:46:25,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:25,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994140573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:25,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:25,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:46:25,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793046877] [2024-11-12 20:46:25,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:25,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:46:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:46:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:46:25,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-12 20:46:25,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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) [2024-11-12 20:46:25,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:25,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-12 20:46:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:27,476 INFO L124 PetriNetUnfolderBase]: 17680/29153 cut-off events. [2024-11-12 20:46:27,477 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-12 20:46:27,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 29153 events. 17680/29153 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246179 event pairs, 12761 based on Foata normal form. 3/25277 useless extension candidates. Maximal degree in co-relation 51645. Up to 21577 conditions per place. [2024-11-12 20:46:27,702 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 40 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-12 20:46:27,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 360 flow [2024-11-12 20:46:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:46:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:46:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2024-11-12 20:46:27,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-12 20:46:27,706 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 456 transitions. [2024-11-12 20:46:27,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 360 flow [2024-11-12 20:46:27,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 314 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-12 20:46:27,710 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2024-11-12 20:46:27,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-12 20:46:27,711 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2024-11-12 20:46:27,711 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2024-11-12 20:46:27,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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) [2024-11-12 20:46:27,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:27,712 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:27,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:46:27,912 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 [2024-11-12 20:46:27,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:27,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1146063111, now seen corresponding path program 1 times [2024-11-12 20:46:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499188171] [2024-11-12 20:46:27,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499188171] [2024-11-12 20:46:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499188171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:27,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:27,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:46:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325193294] [2024-11-12 20:46:27,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:27,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:27,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:27,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:28,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-12 20:46:28,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 20:46:28,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:28,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-12 20:46:28,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:31,482 INFO L124 PetriNetUnfolderBase]: 35361/59053 cut-off events. [2024-11-12 20:46:31,482 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-12 20:46:31,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 59053 events. 35361/59053 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 544043 event pairs, 8077 based on Foata normal form. 955/52276 useless extension candidates. Maximal degree in co-relation 103878. Up to 28557 conditions per place. [2024-11-12 20:46:31,895 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 121 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2024-11-12 20:46:31,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 652 flow [2024-11-12 20:46:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:46:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:46:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-11-12 20:46:31,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-12 20:46:31,897 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 5 states and 308 transitions. [2024-11-12 20:46:31,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 652 flow [2024-11-12 20:46:31,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-12 20:46:31,904 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 269 flow [2024-11-12 20:46:31,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-12 20:46:31,906 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-12 20:46:31,906 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 269 flow [2024-11-12 20:46:31,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 20:46:31,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:31,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:31,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:46:31,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:31,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:31,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535529, now seen corresponding path program 1 times [2024-11-12 20:46:31,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:31,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355772188] [2024-11-12 20:46:31,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:31,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:31,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:31,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355772188] [2024-11-12 20:46:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355772188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:46:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819810937] [2024-11-12 20:46:31,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:31,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:46:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:31,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:46:31,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:46:31,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-12 20:46:31,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-11-12 20:46:31,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:31,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-12 20:46:31,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:35,100 INFO L124 PetriNetUnfolderBase]: 26496/43856 cut-off events. [2024-11-12 20:46:35,100 INFO L125 PetriNetUnfolderBase]: For 2397/2429 co-relation queries the response was YES. [2024-11-12 20:46:35,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79471 conditions, 43856 events. 26496/43856 cut-off events. For 2397/2429 co-relation queries the response was YES. Maximal size of possible extension queue 2232. Compared 390811 event pairs, 18803 based on Foata normal form. 33/38258 useless extension candidates. Maximal degree in co-relation 79437. Up to 32364 conditions per place. [2024-11-12 20:46:35,407 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 50 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-12 20:46:35,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 370 flow [2024-11-12 20:46:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:46:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:46:35,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-12 20:46:35,408 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6706349206349206 [2024-11-12 20:46:35,409 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 269 flow. Second operand 3 states and 169 transitions. [2024-11-12 20:46:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 370 flow [2024-11-12 20:46:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 90 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:46:35,425 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 268 flow [2024-11-12 20:46:35,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-12 20:46:35,426 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-11-12 20:46:35,426 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 268 flow [2024-11-12 20:46:35,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2024-11-12 20:46:35,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:35,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:35,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:46:35,427 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:35,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969763, now seen corresponding path program 1 times [2024-11-12 20:46:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:35,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550767951] [2024-11-12 20:46:35,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550767951] [2024-11-12 20:46:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550767951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916306597] [2024-11-12 20:46:35,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:35,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:35,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:35,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:46:35,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:46:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:35,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 20:46:35,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:35,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 20:46:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:35,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:36,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-12 20:46:36,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-12 20:46:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916306597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:36,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:36,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-12 20:46:36,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431871741] [2024-11-12 20:46:36,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:36,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 20:46:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:46:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:46:36,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-12 20:46:36,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 268 flow. Second operand has 11 states, 11 states have (on average 44.81818181818182) internal successors, (493), 11 states have internal predecessors, (493), 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) [2024-11-12 20:46:36,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:36,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-12 20:46:36,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:40,915 INFO L124 PetriNetUnfolderBase]: 45706/72657 cut-off events. [2024-11-12 20:46:40,916 INFO L125 PetriNetUnfolderBase]: For 3719/3751 co-relation queries the response was YES. [2024-11-12 20:46:41,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133083 conditions, 72657 events. 45706/72657 cut-off events. For 3719/3751 co-relation queries the response was YES. Maximal size of possible extension queue 3085. Compared 650495 event pairs, 15736 based on Foata normal form. 32/64978 useless extension candidates. Maximal degree in co-relation 133056. Up to 22344 conditions per place. [2024-11-12 20:46:41,938 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 88 selfloop transitions, 13 changer transitions 0/139 dead transitions. [2024-11-12 20:46:41,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 139 transitions, 588 flow [2024-11-12 20:46:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:46:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 20:46:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 426 transitions. [2024-11-12 20:46:41,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-12 20:46:41,941 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 268 flow. Second operand 8 states and 426 transitions. [2024-11-12 20:46:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 139 transitions, 588 flow [2024-11-12 20:46:41,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 139 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:46:41,953 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 319 flow [2024-11-12 20:46:41,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=319, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-11-12 20:46:41,954 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2024-11-12 20:46:41,954 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 319 flow [2024-11-12 20:46:41,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.81818181818182) internal successors, (493), 11 states have internal predecessors, (493), 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) [2024-11-12 20:46:41,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:41,955 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:41,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:46:42,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:42,156 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:42,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1779969764, now seen corresponding path program 1 times [2024-11-12 20:46:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635723041] [2024-11-12 20:46:42,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:46:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:42,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635723041] [2024-11-12 20:46:42,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635723041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:42,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:46:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556007420] [2024-11-12 20:46:42,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:42,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:42,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-12 20:46:42,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-12 20:46:42,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:42,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-12 20:46:42,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:46,674 INFO L124 PetriNetUnfolderBase]: 39246/60585 cut-off events. [2024-11-12 20:46:46,675 INFO L125 PetriNetUnfolderBase]: For 12636/12668 co-relation queries the response was YES. [2024-11-12 20:46:46,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122326 conditions, 60585 events. 39246/60585 cut-off events. For 12636/12668 co-relation queries the response was YES. Maximal size of possible extension queue 2524. Compared 510143 event pairs, 15949 based on Foata normal form. 32/56707 useless extension candidates. Maximal degree in co-relation 122287. Up to 29774 conditions per place. [2024-11-12 20:46:47,178 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 92 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-12 20:46:47,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 606 flow [2024-11-12 20:46:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:46:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:46:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-12 20:46:47,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-12 20:46:47,180 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 319 flow. Second operand 4 states and 248 transitions. [2024-11-12 20:46:47,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 606 flow [2024-11-12 20:46:47,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 596 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 20:46:47,204 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 308 flow [2024-11-12 20:46:47,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-11-12 20:46:47,204 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-11-12 20:46:47,205 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 308 flow [2024-11-12 20:46:47,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-12 20:46:47,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:47,205 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-12 20:46:47,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:46:47,206 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:47,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1681187984, now seen corresponding path program 2 times [2024-11-12 20:46:47,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:47,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792433276] [2024-11-12 20:46:47,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:46:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792433276] [2024-11-12 20:46:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792433276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:46:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530737860] [2024-11-12 20:46:47,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:46:47,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:46:47,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:46:47,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:46:47,457 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:46:47,457 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:46:47,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 20:46:47,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:46:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:46:47,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:46:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:46:47,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530737860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:46:47,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:46:47,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2024-11-12 20:46:47,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977157409] [2024-11-12 20:46:47,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:46:47,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 20:46:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 20:46:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-12 20:46:47,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-12 20:46:47,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 308 flow. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 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) [2024-11-12 20:46:47,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:47,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-12 20:46:47,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:52,596 INFO L124 PetriNetUnfolderBase]: 39248/63092 cut-off events. [2024-11-12 20:46:52,596 INFO L125 PetriNetUnfolderBase]: For 18839/18871 co-relation queries the response was YES. [2024-11-12 20:46:52,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129360 conditions, 63092 events. 39248/63092 cut-off events. For 18839/18871 co-relation queries the response was YES. Maximal size of possible extension queue 2626. Compared 562854 event pairs, 28059 based on Foata normal form. 34/58330 useless extension candidates. Maximal degree in co-relation 129315. Up to 48173 conditions per place. [2024-11-12 20:46:53,166 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 39 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-11-12 20:46:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 94 transitions, 432 flow [2024-11-12 20:46:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 20:46:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 20:46:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 680 transitions. [2024-11-12 20:46:53,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-12 20:46:53,169 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 308 flow. Second operand 16 states and 680 transitions. [2024-11-12 20:46:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 94 transitions, 432 flow [2024-11-12 20:46:53,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 94 transitions, 412 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-12 20:46:53,206 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 334 flow [2024-11-12 20:46:53,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-11-12 20:46:53,207 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2024-11-12 20:46:53,207 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 334 flow [2024-11-12 20:46:53,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 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) [2024-11-12 20:46:53,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:53,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:53,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:46:53,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:46:53,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:53,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1153979142, now seen corresponding path program 1 times [2024-11-12 20:46:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:53,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065915713] [2024-11-12 20:46:53,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:53,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:46:53,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:53,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065915713] [2024-11-12 20:46:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065915713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:53,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:46:53,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344929342] [2024-11-12 20:46:53,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:53,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:53,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:53,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:53,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:53,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-12 20:46:53,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-12 20:46:53,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:53,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-12 20:46:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:46:57,819 INFO L124 PetriNetUnfolderBase]: 44594/64146 cut-off events. [2024-11-12 20:46:57,819 INFO L125 PetriNetUnfolderBase]: For 11773/11805 co-relation queries the response was YES. [2024-11-12 20:46:58,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133932 conditions, 64146 events. 44594/64146 cut-off events. For 11773/11805 co-relation queries the response was YES. Maximal size of possible extension queue 2522. Compared 494396 event pairs, 21522 based on Foata normal form. 1622/63554 useless extension candidates. Maximal degree in co-relation 133831. Up to 37247 conditions per place. [2024-11-12 20:46:58,318 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 100 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-12 20:46:58,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 139 transitions, 652 flow [2024-11-12 20:46:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:46:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:46:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-12 20:46:58,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-12 20:46:58,320 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 334 flow. Second operand 4 states and 249 transitions. [2024-11-12 20:46:58,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 139 transitions, 652 flow [2024-11-12 20:46:58,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 587 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-12 20:46:58,338 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 290 flow [2024-11-12 20:46:58,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-11-12 20:46:58,339 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2024-11-12 20:46:58,339 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 290 flow [2024-11-12 20:46:58,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-12 20:46:58,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:46:58,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:46:58,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:46:58,340 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-12 20:46:58,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:46:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash -572865167, now seen corresponding path program 1 times [2024-11-12 20:46:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:46:58,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673118395] [2024-11-12 20:46:58,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:46:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:46:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:46:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:46:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:46:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673118395] [2024-11-12 20:46:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673118395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:46:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:46:58,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:46:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320807942] [2024-11-12 20:46:58,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:46:58,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:46:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:46:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:46:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:46:58,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-12 20:46:58,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-11-12 20:46:58,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:46:58,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-12 20:46:58,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand