./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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 0.3.0-?-e2fb8be-m [2025-03-09 06:41:59,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:41:59,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:41:59,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:41:59,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:41:59,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:41:59,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:41:59,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:41:59,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:41:59,424 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:41:59,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:41:59,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:41:59,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:41:59,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:41:59,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:41:59,426 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:59,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:41:59,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:41:59,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2025-03-09 06:41:59,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:41:59,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:41:59,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:41:59,685 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:41:59,686 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:41:59,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2025-03-09 06:42:00,851 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98737c679/be52630c335a4ab6a1a9b1d28addd40d/FLAG8649f31a1 [2025-03-09 06:42:01,085 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:42:01,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2025-03-09 06:42:01,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98737c679/be52630c335a4ab6a1a9b1d28addd40d/FLAG8649f31a1 [2025-03-09 06:42:01,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98737c679/be52630c335a4ab6a1a9b1d28addd40d [2025-03-09 06:42:01,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:42:01,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:42:01,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:01,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:42:01,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:42:01,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716c313f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01, skipping insertion in model container [2025-03-09 06:42:01,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:42:01,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:01,239 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:42:01,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:42:01,266 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:42:01,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01 WrapperNode [2025-03-09 06:42:01,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:42:01,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:01,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:42:01,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:42:01,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,301 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-03-09 06:42:01,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:42:01,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:42:01,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:42:01,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:42:01,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,313 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,324 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]. [2025-03-09 06:42:01,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,328 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:42:01,337 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:42:01,337 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:42:01,337 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:42:01,337 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (1/1) ... [2025-03-09 06:42:01,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:42:01,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:01,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:42:01,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:42:01,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:42:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:42:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:42:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:42:01,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:42:01,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:42:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:42:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:42:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:42:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:42:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:42:01,389 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:42:01,477 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:42:01,478 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:42:01,739 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:42:01,739 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:42:01,877 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:42:01,877 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:42:01,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:01 BoogieIcfgContainer [2025-03-09 06:42:01,878 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:42:01,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:42:01,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:42:01,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:42:01,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:42:01" (1/3) ... [2025-03-09 06:42:01,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f5e0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:01, skipping insertion in model container [2025-03-09 06:42:01,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:42:01" (2/3) ... [2025-03-09 06:42:01,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f5e0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:42:01, skipping insertion in model container [2025-03-09 06:42:01,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:42:01" (3/3) ... [2025-03-09 06:42:01,886 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2025-03-09 06:42:01,898 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:42:01,899 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-03-09 06:42:01,900 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:42:01,972 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:42:02,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2025-03-09 06:42:02,040 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2025-03-09 06:42:02,042 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:42:02,045 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 11. Compared 237 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. [2025-03-09 06:42:02,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2025-03-09 06:42:02,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2025-03-09 06:42:02,053 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:42:02,060 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;@6be7bcd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:42:02,060 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-03-09 06:42:02,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:42:02,064 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2025-03-09 06:42:02,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:42:02,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:02,064 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:42:02,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:02,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 472635679, now seen corresponding path program 1 times [2025-03-09 06:42:02,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:02,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368107616] [2025-03-09 06:42:02,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:02,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:02,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:42:02,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:42:02,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:02,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:02,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368107616] [2025-03-09 06:42:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368107616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:02,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:02,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267747907] [2025-03-09 06:42:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:02,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:02,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:02,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:02,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:02,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:02,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:02,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:02,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:05,643 INFO L124 PetriNetUnfolderBase]: 37330/58506 cut-off events. [2025-03-09 06:42:05,644 INFO L125 PetriNetUnfolderBase]: For 1917/1917 co-relation queries the response was YES. [2025-03-09 06:42:05,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107878 conditions, 58506 events. 37330/58506 cut-off events. For 1917/1917 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475545 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 103409. Up to 47232 conditions per place. [2025-03-09 06:42:06,016 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-03-09 06:42:06,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 289 flow [2025-03-09 06:42:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2025-03-09 06:42:06,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2025-03-09 06:42:06,026 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 183 transitions. [2025-03-09 06:42:06,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 289 flow [2025-03-09 06:42:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:42:06,141 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2025-03-09 06:42:06,142 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} [2025-03-09 06:42:06,144 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-03-09 06:42:06,144 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2025-03-09 06:42:06,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:06,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:06,145 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:06,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:42:06,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:06,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1387110353, now seen corresponding path program 1 times [2025-03-09 06:42:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:06,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933793269] [2025-03-09 06:42:06,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:06,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:42:06,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:42:06,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:06,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933793269] [2025-03-09 06:42:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933793269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:06,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882734523] [2025-03-09 06:42:06,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:06,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:06,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:06,275 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) [2025-03-09 06:42:06,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:42:06,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:42:06,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:42:06,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:06,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:06,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:06,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:06,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:42:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882734523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:42:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:42:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149229381] [2025-03-09 06:42:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:42:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:06,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:42:06,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:42:06,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:06,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:09,068 INFO L124 PetriNetUnfolderBase]: 37330/58505 cut-off events. [2025-03-09 06:42:09,069 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2025-03-09 06:42:09,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107345 conditions, 58505 events. 37330/58505 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475614 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 107318. Up to 47227 conditions per place. [2025-03-09 06:42:09,454 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 45 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-03-09 06:42:09,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 293 flow [2025-03-09 06:42:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:42:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:42:09,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2025-03-09 06:42:09,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-03-09 06:42:09,456 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 245 transitions. [2025-03-09 06:42:09,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 293 flow [2025-03-09 06:42:09,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:42:09,458 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2025-03-09 06:42:09,459 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} [2025-03-09 06:42:09,459 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2025-03-09 06:42:09,459 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2025-03-09 06:42:09,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:09,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:09,460 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:42:09,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:42:09,665 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 [2025-03-09 06:42:09,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:09,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:09,666 INFO L85 PathProgramCache]: Analyzing trace with hash 50748378, now seen corresponding path program 1 times [2025-03-09 06:42:09,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:09,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178986421] [2025-03-09 06:42:09,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:09,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:09,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:09,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:09,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:09,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178986421] [2025-03-09 06:42:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178986421] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149822594] [2025-03-09 06:42:09,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:09,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:09,775 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) [2025-03-09 06:42:09,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:42:09,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:42:09,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:42:09,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:09,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:09,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:42:09,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:09,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:09,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149822594] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:09,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:09,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:42:09,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704078714] [2025-03-09 06:42:09,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:09,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:42:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:09,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:42:09,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:42:09,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:09,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:09,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:12,706 INFO L124 PetriNetUnfolderBase]: 37333/58517 cut-off events. [2025-03-09 06:42:12,706 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2025-03-09 06:42:12,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107389 conditions, 58517 events. 37333/58517 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475621 event pairs, 27934 based on Foata normal form. 3/51059 useless extension candidates. Maximal degree in co-relation 107319. Up to 47234 conditions per place. [2025-03-09 06:42:12,999 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 48 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2025-03-09 06:42:12,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 376 flow [2025-03-09 06:42:12,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:42:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:42:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 384 transitions. [2025-03-09 06:42:13,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-03-09 06:42:13,001 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 384 transitions. [2025-03-09 06:42:13,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 376 flow [2025-03-09 06:42:13,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 330 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-09 06:42:13,003 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2025-03-09 06:42:13,003 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} [2025-03-09 06:42:13,004 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-09 06:42:13,004 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2025-03-09 06:42:13,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:13,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:13,004 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:13,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:42:13,204 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 [2025-03-09 06:42:13,205 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:13,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795597, now seen corresponding path program 1 times [2025-03-09 06:42:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780850844] [2025-03-09 06:42:13,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:13,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:42:13,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:42:13,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:13,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780850844] [2025-03-09 06:42:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780850844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996503387] [2025-03-09 06:42:13,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:13,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:42:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:13,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:42:13,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:42:13,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:13,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:13,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:13,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:13,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:15,802 INFO L124 PetriNetUnfolderBase]: 37332/58516 cut-off events. [2025-03-09 06:42:15,802 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2025-03-09 06:42:15,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107386 conditions, 58516 events. 37332/58516 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475528 event pairs, 27934 based on Foata normal form. 1/51059 useless extension candidates. Maximal degree in co-relation 107352. Up to 47238 conditions per place. [2025-03-09 06:42:16,203 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 57 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2025-03-09 06:42:16,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 366 flow [2025-03-09 06:42:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:42:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:42:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2025-03-09 06:42:16,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-03-09 06:42:16,204 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 3 states and 153 transitions. [2025-03-09 06:42:16,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 366 flow [2025-03-09 06:42:16,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 356 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:16,206 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 242 flow [2025-03-09 06:42:16,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2025-03-09 06:42:16,207 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-03-09 06:42:16,207 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 242 flow [2025-03-09 06:42:16,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:16,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:16,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:16,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:42:16,207 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:16,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543205, now seen corresponding path program 1 times [2025-03-09 06:42:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614922364] [2025-03-09 06:42:16,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:16,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:16,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:16,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:16,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:16,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614922364] [2025-03-09 06:42:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614922364] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372133115] [2025-03-09 06:42:16,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:16,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:42:16,573 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) [2025-03-09 06:42:16,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:42:16,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:16,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:16,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:16,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:16,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 06:42:16,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:42:16,663 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 [2025-03-09 06:42:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:16,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:42:16,811 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 [2025-03-09 06:42:16,816 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 [2025-03-09 06:42:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:42:16,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372133115] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:42:16,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:42:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-03-09 06:42:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947362837] [2025-03-09 06:42:16,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:42:16,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:42:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:16,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:42:16,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:42:16,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:16,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:16,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:16,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:16,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:21,498 INFO L124 PetriNetUnfolderBase]: 69878/99502 cut-off events. [2025-03-09 06:42:21,498 INFO L125 PetriNetUnfolderBase]: For 738/738 co-relation queries the response was YES. [2025-03-09 06:42:21,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190534 conditions, 99502 events. 69878/99502 cut-off events. For 738/738 co-relation queries the response was YES. Maximal size of possible extension queue 2733. Compared 722994 event pairs, 20121 based on Foata normal form. 0/91084 useless extension candidates. Maximal degree in co-relation 190510. Up to 34221 conditions per place. [2025-03-09 06:42:22,215 INFO L140 encePairwiseOnDemand]: 72/84 looper letters, 132 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2025-03-09 06:42:22,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 176 transitions, 724 flow [2025-03-09 06:42:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 06:42:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 06:42:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 445 transitions. [2025-03-09 06:42:22,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5886243386243386 [2025-03-09 06:42:22,217 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 242 flow. Second operand 9 states and 445 transitions. [2025-03-09 06:42:22,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 176 transitions, 724 flow [2025-03-09 06:42:22,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:42:22,220 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 309 flow [2025-03-09 06:42:22,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=309, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2025-03-09 06:42:22,220 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2025-03-09 06:42:22,220 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 309 flow [2025-03-09 06:42:22,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:22,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:22,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:22,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:42:22,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:22,421 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:22,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543204, now seen corresponding path program 1 times [2025-03-09 06:42:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711807494] [2025-03-09 06:42:22,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:22,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:22,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:22,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:22,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:22,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:22,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711807494] [2025-03-09 06:42:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711807494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:22,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:22,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:42:22,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721825628] [2025-03-09 06:42:22,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:22,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:22,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:22,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:22,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-03-09 06:42:22,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:22,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:22,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-03-09 06:42:22,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:26,837 INFO L124 PetriNetUnfolderBase]: 58857/86155 cut-off events. [2025-03-09 06:42:26,837 INFO L125 PetriNetUnfolderBase]: For 19246/19246 co-relation queries the response was YES. [2025-03-09 06:42:27,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183682 conditions, 86155 events. 58857/86155 cut-off events. For 19246/19246 co-relation queries the response was YES. Maximal size of possible extension queue 2477. Compared 647338 event pairs, 25347 based on Foata normal form. 0/81380 useless extension candidates. Maximal degree in co-relation 183645. Up to 44436 conditions per place. [2025-03-09 06:42:27,417 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 111 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2025-03-09 06:42:27,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 146 transitions, 650 flow [2025-03-09 06:42:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:42:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:42:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2025-03-09 06:42:27,421 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:42:27,421 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 309 flow. Second operand 4 states and 238 transitions. [2025-03-09 06:42:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 146 transitions, 650 flow [2025-03-09 06:42:27,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 640 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:42:27,469 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 302 flow [2025-03-09 06:42:27,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2025-03-09 06:42:27,470 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 15 predicate places. [2025-03-09 06:42:27,470 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 302 flow [2025-03-09 06:42:27,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:27,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:27,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:42:27,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:42:27,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:27,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1344475851, now seen corresponding path program 1 times [2025-03-09 06:42:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:27,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589298782] [2025-03-09 06:42:27,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:42:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:27,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:42:27,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:42:27,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:42:27,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:42:27,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589298782] [2025-03-09 06:42:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589298782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:42:27,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:42:27,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:42:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444217513] [2025-03-09 06:42:27,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:42:27,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:42:27,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:42:27,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:42:27,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:42:27,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-03-09 06:42:27,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:27,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:42:27,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-03-09 06:42:27,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:42:34,831 INFO L124 PetriNetUnfolderBase]: 97994/146736 cut-off events. [2025-03-09 06:42:34,831 INFO L125 PetriNetUnfolderBase]: For 72356/72356 co-relation queries the response was YES. [2025-03-09 06:42:35,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317488 conditions, 146736 events. 97994/146736 cut-off events. For 72356/72356 co-relation queries the response was YES. Maximal size of possible extension queue 4120. Compared 1217880 event pairs, 11091 based on Foata normal form. 2198/137054 useless extension candidates. Maximal degree in co-relation 317454. Up to 61986 conditions per place. [2025-03-09 06:42:36,054 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-03-09 06:42:36,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 968 flow [2025-03-09 06:42:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:42:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:42:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2025-03-09 06:42:36,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-03-09 06:42:36,056 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 302 flow. Second operand 5 states and 292 transitions. [2025-03-09 06:42:36,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 968 flow [2025-03-09 06:42:36,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 920 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:42:36,103 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 324 flow [2025-03-09 06:42:36,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2025-03-09 06:42:36,104 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-03-09 06:42:36,104 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 324 flow [2025-03-09 06:42:36,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:42:36,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:42:36,104 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2025-03-09 06:42:36,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:42:36,104 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-03-09 06:42:36,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:42:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1026340556, now seen corresponding path program 2 times [2025-03-09 06:42:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:42:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530149808] [2025-03-09 06:42:36,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:42:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:42:36,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-09 06:42:36,116 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-03-09 06:42:36,116 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:42:36,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:42:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:42:36,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:42:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530149808] [2025-03-09 06:42:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530149808] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:42:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42228353] [2025-03-09 06:42:36,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:42:36,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:42:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3