./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.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-bad-dot-product.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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:41:10,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:41:10,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:41:10,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:41:10,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:41:10,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:41:10,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:41:10,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:41:10,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:41:10,498 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:41:10,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:41:10,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:41:10,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:41:10,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:41:10,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:41:10,501 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:10,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:41:10,501 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:41:10,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:41:10,502 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 -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2025-03-09 06:41:10,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:41:10,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:41:10,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:41:10,723 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:41:10,723 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:41:10,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2025-03-09 06:41:11,841 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9928754/d89a6c8813da4cafaa429ee0e16f3bac/FLAG86b29dfdd [2025-03-09 06:41:12,069 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:41:12,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2025-03-09 06:41:12,078 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9928754/d89a6c8813da4cafaa429ee0e16f3bac/FLAG86b29dfdd [2025-03-09 06:41:12,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9928754/d89a6c8813da4cafaa429ee0e16f3bac [2025-03-09 06:41:12,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:41:12,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:41:12,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:12,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:41:12,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:41:12,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480f5233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12, skipping insertion in model container [2025-03-09 06:41:12,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:41:12,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:12,597 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:41:12,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:12,637 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:41:12,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12 WrapperNode [2025-03-09 06:41:12,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:12,639 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:12,639 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:41:12,639 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:41:12,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,684 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 314 [2025-03-09 06:41:12,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:12,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:41:12,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:41:12,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:41:12,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,719 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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 06:41:12,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:41:12,745 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:41:12,745 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:41:12,745 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:41:12,746 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (1/1) ... [2025-03-09 06:41:12,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:12,782 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 06:41:12,784 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 06:41:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:41:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:41:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:41:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:41:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:41:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:41:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:41:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:41:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:41:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:41:12,803 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 06:41:12,881 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:41:12,883 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:41:13,275 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:41:13,275 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:41:13,572 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:41:13,572 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:41:13,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:13 BoogieIcfgContainer [2025-03-09 06:41:13,576 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:41:13,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:41:13,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:41:13,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:41:13,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:41:12" (1/3) ... [2025-03-09 06:41:13,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642cda6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:13, skipping insertion in model container [2025-03-09 06:41:13,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:12" (2/3) ... [2025-03-09 06:41:13,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642cda6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:13, skipping insertion in model container [2025-03-09 06:41:13,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:13" (3/3) ... [2025-03-09 06:41:13,585 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2025-03-09 06:41:13,600 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:41:13,602 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-dot-product.wvr.c that has 4 procedures, 88 locations, 1 initial locations, 8 loop locations, and 34 error locations. [2025-03-09 06:41:13,602 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:41:13,714 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:41:13,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2025-03-09 06:41:13,786 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2025-03-09 06:41:13,788 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:41:13,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 378 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2025-03-09 06:41:13,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2025-03-09 06:41:13,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2025-03-09 06:41:13,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:41:13,817 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;@166d57c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:41:13,818 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2025-03-09 06:41:13,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:41:13,822 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:41:13,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:41:13,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:13,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:41:13,823 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:13,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash 933901, now seen corresponding path program 1 times [2025-03-09 06:41:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:13,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999329263] [2025-03-09 06:41:13,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:13,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:41:13,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:41:13,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:13,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:14,026 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 06:41:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999329263] [2025-03-09 06:41:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999329263] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519194308] [2025-03-09 06:41:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:14,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:14,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:14,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:14,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2025-03-09 06:41:14,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 06:41:14,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:14,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2025-03-09 06:41:14,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:15,706 INFO L124 PetriNetUnfolderBase]: 10484/18005 cut-off events. [2025-03-09 06:41:15,707 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2025-03-09 06:41:15,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32901 conditions, 18005 events. 10484/18005 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 145776 event pairs, 8602 based on Foata normal form. 941/12064 useless extension candidates. Maximal degree in co-relation 31652. Up to 14417 conditions per place. [2025-03-09 06:41:15,814 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2025-03-09 06:41:15,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2025-03-09 06:41:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2025-03-09 06:41:15,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2025-03-09 06:41:15,825 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2025-03-09 06:41:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2025-03-09 06:41:15,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:15,837 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2025-03-09 06:41:15,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2025-03-09 06:41:15,845 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2025-03-09 06:41:15,845 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2025-03-09 06:41:15,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 06:41:15,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:15,846 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:41:15,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:41:15,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:15,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2052841237, now seen corresponding path program 1 times [2025-03-09 06:41:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360772057] [2025-03-09 06:41:15,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:15,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:15,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:15,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:15,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:15,985 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 06:41:15,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:15,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360772057] [2025-03-09 06:41:15,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360772057] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:15,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813188928] [2025-03-09 06:41:15,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:15,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:15,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:15,988 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 06:41:15,991 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 06:41:16,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:16,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:16,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:16,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:16,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:16,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:16,116 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 06:41:16,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:16,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813188928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:16,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:16,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:41:16,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556090304] [2025-03-09 06:41:16,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:16,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:16,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:16,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:16,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2025-03-09 06:41:16,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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 06:41:16,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:16,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2025-03-09 06:41:16,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:17,520 INFO L124 PetriNetUnfolderBase]: 10484/18003 cut-off events. [2025-03-09 06:41:17,521 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-03-09 06:41:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32750 conditions, 18003 events. 10484/18003 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 145684 event pairs, 8602 based on Foata normal form. 2/11126 useless extension candidates. Maximal degree in co-relation 32700. Up to 14407 conditions per place. [2025-03-09 06:41:17,647 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2025-03-09 06:41:17,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2025-03-09 06:41:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2025-03-09 06:41:17,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-03-09 06:41:17,651 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2025-03-09 06:41:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2025-03-09 06:41:17,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:17,655 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2025-03-09 06:41:17,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2025-03-09 06:41:17,656 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2025-03-09 06:41:17,656 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2025-03-09 06:41:17,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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 06:41:17,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:17,657 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:41:17,664 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 06:41:17,861 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 06:41:17,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:17,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -786430291, now seen corresponding path program 1 times [2025-03-09 06:41:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651215861] [2025-03-09 06:41:17,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:17,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:17,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:17,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:17,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:17,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:17,932 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 06:41:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651215861] [2025-03-09 06:41:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651215861] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488188947] [2025-03-09 06:41:17,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:17,936 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 06:41:17,938 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 06:41:18,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:18,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:18,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:18,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:18,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:18,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:18,044 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 06:41:18,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:18,077 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 06:41:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488188947] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:18,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:41:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526432870] [2025-03-09 06:41:18,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:18,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:18,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:18,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:18,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2025-03-09 06:41:18,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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 06:41:18,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:18,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2025-03-09 06:41:18,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:19,230 INFO L124 PetriNetUnfolderBase]: 10490/18027 cut-off events. [2025-03-09 06:41:19,231 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2025-03-09 06:41:19,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32844 conditions, 18027 events. 10490/18027 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 146046 event pairs, 8602 based on Foata normal form. 6/11153 useless extension candidates. Maximal degree in co-relation 32702. Up to 14418 conditions per place. [2025-03-09 06:41:19,319 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2025-03-09 06:41:19,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2025-03-09 06:41:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2025-03-09 06:41:19,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2025-03-09 06:41:19,322 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2025-03-09 06:41:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2025-03-09 06:41:19,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:19,325 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2025-03-09 06:41:19,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2025-03-09 06:41:19,325 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2025-03-09 06:41:19,326 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2025-03-09 06:41:19,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 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 06:41:19,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:19,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:19,334 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 06:41:19,530 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 06:41:19,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:19,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1811038127, now seen corresponding path program 1 times [2025-03-09 06:41:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685321040] [2025-03-09 06:41:19,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:19,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:41:19,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:41:19,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:19,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:19,656 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 06:41:19,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:19,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685321040] [2025-03-09 06:41:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685321040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:19,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212061173] [2025-03-09 06:41:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:19,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:19,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:19,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:19,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2025-03-09 06:41:19,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 06:41:19,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:19,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2025-03-09 06:41:19,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:21,081 INFO L124 PetriNetUnfolderBase]: 10490/18043 cut-off events. [2025-03-09 06:41:21,082 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2025-03-09 06:41:21,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32913 conditions, 18043 events. 10490/18043 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 146037 event pairs, 8602 based on Foata normal form. 4/11169 useless extension candidates. Maximal degree in co-relation 32820. Up to 14433 conditions per place. [2025-03-09 06:41:21,151 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2025-03-09 06:41:21,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2025-03-09 06:41:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:41:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:41:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2025-03-09 06:41:21,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2025-03-09 06:41:21,152 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2025-03-09 06:41:21,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2025-03-09 06:41:21,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:21,155 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2025-03-09 06:41:21,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2025-03-09 06:41:21,156 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2025-03-09 06:41:21,156 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2025-03-09 06:41:21,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 06:41:21,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:21,157 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:21,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:41:21,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:21,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash -562136903, now seen corresponding path program 1 times [2025-03-09 06:41:21,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202433152] [2025-03-09 06:41:21,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:21,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:21,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:21,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:21,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:21,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:21,326 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 06:41:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202433152] [2025-03-09 06:41:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202433152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:41:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493419968] [2025-03-09 06:41:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:21,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:21,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:21,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:21,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:21,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2025-03-09 06:41:21,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:21,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:21,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2025-03-09 06:41:21,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:22,902 INFO L124 PetriNetUnfolderBase]: 17689/29508 cut-off events. [2025-03-09 06:41:22,902 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-03-09 06:41:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54442 conditions, 29508 events. 17689/29508 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 1220. Compared 236790 event pairs, 6442 based on Foata normal form. 0/18538 useless extension candidates. Maximal degree in co-relation 54364. Up to 13584 conditions per place. [2025-03-09 06:41:23,069 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 119 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2025-03-09 06:41:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 149 transitions, 727 flow [2025-03-09 06:41:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2025-03-09 06:41:23,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6700680272108843 [2025-03-09 06:41:23,070 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 3 states and 197 transitions. [2025-03-09 06:41:23,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 149 transitions, 727 flow [2025-03-09 06:41:23,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 149 transitions, 723 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:23,073 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 406 flow [2025-03-09 06:41:23,074 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2025-03-09 06:41:23,074 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2025-03-09 06:41:23,075 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 406 flow [2025-03-09 06:41:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:23,075 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:23,075 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:23,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:41:23,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:23,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -562136906, now seen corresponding path program 1 times [2025-03-09 06:41:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907577723] [2025-03-09 06:41:23,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:23,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:23,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:23,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:23,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:23,196 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 06:41:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907577723] [2025-03-09 06:41:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907577723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:23,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 06:41:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715033384] [2025-03-09 06:41:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:23,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:23,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:23,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:41:23,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2025-03-09 06:41:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 06:41:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2025-03-09 06:41:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:25,779 INFO L124 PetriNetUnfolderBase]: 25394/42181 cut-off events. [2025-03-09 06:41:25,779 INFO L125 PetriNetUnfolderBase]: For 1102/1102 co-relation queries the response was YES. [2025-03-09 06:41:25,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79599 conditions, 42181 events. 25394/42181 cut-off events. For 1102/1102 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 344545 event pairs, 18919 based on Foata normal form. 0/27768 useless extension candidates. Maximal degree in co-relation 79505. Up to 26573 conditions per place. [2025-03-09 06:41:26,005 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 172 selfloop transitions, 12 changer transitions 0/211 dead transitions. [2025-03-09 06:41:26,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 211 transitions, 992 flow [2025-03-09 06:41:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2025-03-09 06:41:26,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2025-03-09 06:41:26,008 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 406 flow. Second operand 6 states and 354 transitions. [2025-03-09 06:41:26,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 211 transitions, 992 flow [2025-03-09 06:41:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 211 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:26,015 INFO L231 Difference]: Finished difference. Result has 109 places, 112 transitions, 446 flow [2025-03-09 06:41:26,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=109, PETRI_TRANSITIONS=112} [2025-03-09 06:41:26,016 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2025-03-09 06:41:26,017 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 112 transitions, 446 flow [2025-03-09 06:41:26,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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 06:41:26,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:26,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:26,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:41:26,018 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:26,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash -246373061, now seen corresponding path program 1 times [2025-03-09 06:41:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:26,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066479274] [2025-03-09 06:41:26,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:26,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:26,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:41:26,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:41:26,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:26,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:26,082 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 06:41:26,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:26,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066479274] [2025-03-09 06:41:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066479274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:26,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:41:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618693343] [2025-03-09 06:41:26,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:26,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:26,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:26,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:26,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2025-03-09 06:41:26,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 112 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 06:41:26,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:26,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2025-03-09 06:41:26,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:31,123 INFO L124 PetriNetUnfolderBase]: 45510/71215 cut-off events. [2025-03-09 06:41:31,123 INFO L125 PetriNetUnfolderBase]: For 4439/4583 co-relation queries the response was YES. [2025-03-09 06:41:31,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148196 conditions, 71215 events. 45510/71215 cut-off events. For 4439/4583 co-relation queries the response was YES. Maximal size of possible extension queue 1953. Compared 567660 event pairs, 23239 based on Foata normal form. 1086/49742 useless extension candidates. Maximal degree in co-relation 148099. Up to 39345 conditions per place. [2025-03-09 06:41:31,593 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 158 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2025-03-09 06:41:31,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 190 transitions, 962 flow [2025-03-09 06:41:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:31,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2025-03-09 06:41:31,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-03-09 06:41:31,595 INFO L175 Difference]: Start difference. First operand has 109 places, 112 transitions, 446 flow. Second operand 4 states and 256 transitions. [2025-03-09 06:41:31,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 190 transitions, 962 flow [2025-03-09 06:41:31,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 190 transitions, 955 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:31,651 INFO L231 Difference]: Finished difference. Result has 113 places, 116 transitions, 482 flow [2025-03-09 06:41:31,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=113, PETRI_TRANSITIONS=116} [2025-03-09 06:41:31,651 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2025-03-09 06:41:31,651 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 116 transitions, 482 flow [2025-03-09 06:41:31,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 06:41:31,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:31,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:31,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:41:31,652 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:31,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash -85114605, now seen corresponding path program 1 times [2025-03-09 06:41:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:31,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562335057] [2025-03-09 06:41:31,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:31,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:41:31,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:41:31,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:31,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:31,796 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 06:41:31,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:31,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562335057] [2025-03-09 06:41:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562335057] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:31,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214753586] [2025-03-09 06:41:31,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:31,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:31,799 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 06:41:31,802 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 06:41:31,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:41:31,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:41:31,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:31,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:31,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:41:31,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:31,972 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 06:41:31,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:32,254 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 06:41:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214753586] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:32,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-03-09 06:41:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442547936] [2025-03-09 06:41:32,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:32,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 06:41:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:32,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 06:41:32,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-03-09 06:41:32,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2025-03-09 06:41:32,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 116 transitions, 482 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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 06:41:32,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:32,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2025-03-09 06:41:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:38,300 INFO L124 PetriNetUnfolderBase]: 49307/84448 cut-off events. [2025-03-09 06:41:38,300 INFO L125 PetriNetUnfolderBase]: For 26463/27314 co-relation queries the response was YES. [2025-03-09 06:41:38,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181510 conditions, 84448 events. 49307/84448 cut-off events. For 26463/27314 co-relation queries the response was YES. Maximal size of possible extension queue 2571. Compared 786106 event pairs, 37550 based on Foata normal form. 755/60259 useless extension candidates. Maximal degree in co-relation 181378. Up to 55511 conditions per place. [2025-03-09 06:41:39,083 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 149 selfloop transitions, 41 changer transitions 0/217 dead transitions. [2025-03-09 06:41:39,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 217 transitions, 1289 flow [2025-03-09 06:41:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:41:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:41:39,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2025-03-09 06:41:39,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2025-03-09 06:41:39,085 INFO L175 Difference]: Start difference. First operand has 113 places, 116 transitions, 482 flow. Second operand 13 states and 516 transitions. [2025-03-09 06:41:39,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 217 transitions, 1289 flow [2025-03-09 06:41:39,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 217 transitions, 1280 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:39,144 INFO L231 Difference]: Finished difference. Result has 128 places, 136 transitions, 745 flow [2025-03-09 06:41:39,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=745, PETRI_PLACES=128, PETRI_TRANSITIONS=136} [2025-03-09 06:41:39,145 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2025-03-09 06:41:39,145 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 136 transitions, 745 flow [2025-03-09 06:41:39,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 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 06:41:39,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:39,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:39,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:41:39,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:39,350 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2025-03-09 06:41:39,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:39,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1972299484, now seen corresponding path program 1 times [2025-03-09 06:41:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402633856] [2025-03-09 06:41:39,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:39,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:39,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:39,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:39,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402633856] [2025-03-09 06:41:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402633856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965474811] [2025-03-09 06:41:39,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:39,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:39,511 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) [2025-03-09 06:41:39,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:41:39,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:41:39,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:41:39,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:39,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:39,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 06:41:39,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:39,670 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 23 treesize of output 7 [2025-03-09 06:41:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:39,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:39,713 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 25 treesize of output 9 [2025-03-09 06:41:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:41:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965474811] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:39,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:39,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-03-09 06:41:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669582100] [2025-03-09 06:41:39,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:39,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:41:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:39,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:41:39,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:41:39,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2025-03-09 06:41:39,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 136 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 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 06:41:39,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:39,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2025-03-09 06:41:39,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand