./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:52:56,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:52:56,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:52:56,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:52:56,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:52:56,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:52:56,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:52:56,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:52:56,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:52:56,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:52:56,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:52:56,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:52:56,797 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:56,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:56,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:56,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:52:56,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:52:56,798 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-jdk21/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 -> bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 [2025-01-10 06:52:57,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:52:57,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:52:57,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:52:57,090 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:52:57,091 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:52:57,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-01-10 06:52:58,317 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd597539c/31199c85486942c98e72f642f25b9e49/FLAGdec71bed2 [2025-01-10 06:52:58,543 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:52:58,544 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-01-10 06:52:58,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd597539c/31199c85486942c98e72f642f25b9e49/FLAGdec71bed2 [2025-01-10 06:52:58,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd597539c/31199c85486942c98e72f642f25b9e49 [2025-01-10 06:52:58,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:52:58,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:52:58,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:58,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:52:58,887 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:52:58,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:58" (1/1) ... [2025-01-10 06:52:58,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186fdf97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:58, skipping insertion in model container [2025-01-10 06:52:58,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:58" (1/1) ... [2025-01-10 06:52:58,900 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:52:59,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:59,048 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:52:59,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:59,082 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:52:59,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59 WrapperNode [2025-01-10 06:52:59,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:59,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:59,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:52:59,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:52:59,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,121 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 140 [2025-01-10 06:52:59,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:59,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:52:59,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:52:59,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:52:59,130 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,148 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-10 06:52:59,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:52:59,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:52:59,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:52:59,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:52:59,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (1/1) ... [2025-01-10 06:52:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:59,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:59,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:52:59,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:52:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:52:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:52:59,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:52:59,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:52:59,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:52:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:52:59,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:52:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:52:59,229 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:52:59,316 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:52:59,317 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:52:59,535 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:52:59,535 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:52:59,676 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:52:59,676 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-10 06:52:59,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:59 BoogieIcfgContainer [2025-01-10 06:52:59,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:52:59,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:52:59,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:52:59,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:52:59,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:58" (1/3) ... [2025-01-10 06:52:59,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56855bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:59, skipping insertion in model container [2025-01-10 06:52:59,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:59" (2/3) ... [2025-01-10 06:52:59,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56855bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:59, skipping insertion in model container [2025-01-10 06:52:59,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:59" (3/3) ... [2025-01-10 06:52:59,684 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2025-01-10 06:52:59,694 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:52:59,695 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-channel-sum.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-01-10 06:52:59,695 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:52:59,749 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:52:59,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-01-10 06:52:59,808 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-01-10 06:52:59,809 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:52:59,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-01-10 06:52:59,815 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-01-10 06:52:59,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-01-10 06:52:59,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:52:59,837 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;@4b378a73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:52:59,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-01-10 06:52:59,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:52:59,843 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2025-01-10 06:52:59,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:52:59,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:59,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:59,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:52:59,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -572951235, now seen corresponding path program 1 times [2025-01-10 06:52:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713622770] [2025-01-10 06:52:59,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:59,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:59,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:59,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:59,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:00,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713622770] [2025-01-10 06:53:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713622770] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:00,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:00,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176597772] [2025-01-10 06:53:00,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:00,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:00,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:00,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:00,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:00,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-01-10 06:53:00,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:00,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:00,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:00,311 INFO L124 PetriNetUnfolderBase]: 368/632 cut-off events. [2025-01-10 06:53:00,315 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-01-10 06:53:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 632 events. 368/632 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2850 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1131. Up to 568 conditions per place. [2025-01-10 06:53:00,323 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2025-01-10 06:53:00,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 169 flow [2025-01-10 06:53:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-01-10 06:53:00,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-01-10 06:53:00,335 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 93 transitions. [2025-01-10 06:53:00,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 169 flow [2025-01-10 06:53:00,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:00,343 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2025-01-10 06:53:00,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-01-10 06:53:00,350 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-01-10 06:53:00,351 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2025-01-10 06:53:00,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2025-01-10 06:53:00,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:00,352 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:00,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:53:00,352 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:00,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash -589783451, now seen corresponding path program 1 times [2025-01-10 06:53:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:00,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496926004] [2025-01-10 06:53:00,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:00,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:00,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:00,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:00,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:00,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496926004] [2025-01-10 06:53:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496926004] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630897] [2025-01-10 06:53:00,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:00,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:00,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:00,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:53:00,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:00,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:00,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:00,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:00,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:00,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:00,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:00,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630897] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:00,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:00,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-10 06:53:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382984391] [2025-01-10 06:53:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:00,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:00,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:00,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:00,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:53:00,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:00,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2025-01-10 06:53:00,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:00,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:00,825 INFO L124 PetriNetUnfolderBase]: 368/631 cut-off events. [2025-01-10 06:53:00,826 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-01-10 06:53:00,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 631 events. 368/631 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2914 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1203. Up to 563 conditions per place. [2025-01-10 06:53:00,833 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 26 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2025-01-10 06:53:00,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 181 flow [2025-01-10 06:53:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2025-01-10 06:53:00,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2025-01-10 06:53:00,836 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 6 states and 118 transitions. [2025-01-10 06:53:00,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 181 flow [2025-01-10 06:53:00,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:00,837 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 126 flow [2025-01-10 06:53:00,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-01-10 06:53:00,838 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-01-10 06:53:00,838 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 126 flow [2025-01-10 06:53:00,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2025-01-10 06:53:00,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:00,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:00,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:01,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:01,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:01,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -587756724, now seen corresponding path program 1 times [2025-01-10 06:53:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046167224] [2025-01-10 06:53:01,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:53:01,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:53:01,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046167224] [2025-01-10 06:53:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046167224] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:01,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:01,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971485438] [2025-01-10 06:53:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:01,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:01,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:01,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-01-10 06:53:01,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:01,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:01,210 INFO L124 PetriNetUnfolderBase]: 364/661 cut-off events. [2025-01-10 06:53:01,210 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-01-10 06:53:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 661 events. 364/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2916 event pairs, 160 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1274. Up to 432 conditions per place. [2025-01-10 06:53:01,214 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2025-01-10 06:53:01,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 255 flow [2025-01-10 06:53:01,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-01-10 06:53:01,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2025-01-10 06:53:01,218 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 126 flow. Second operand 3 states and 89 transitions. [2025-01-10 06:53:01,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 255 flow [2025-01-10 06:53:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 233 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-01-10 06:53:01,220 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 142 flow [2025-01-10 06:53:01,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-01-10 06:53:01,220 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-01-10 06:53:01,220 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 142 flow [2025-01-10 06:53:01,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2025-01-10 06:53:01,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:01,222 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:01,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:53:01,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:01,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1103417370, now seen corresponding path program 1 times [2025-01-10 06:53:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394903799] [2025-01-10 06:53:01,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:01,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:01,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394903799] [2025-01-10 06:53:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394903799] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057651582] [2025-01-10 06:53:01,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:01,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:01,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:53:01,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:53:01,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:53:01,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:01,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057651582] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:01,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:01,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:53:01,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689622134] [2025-01-10 06:53:01,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:53:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:53:01,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:53:01,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:01,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:01,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:01,619 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2025-01-10 06:53:01,619 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2025-01-10 06:53:01,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 745 events. 367/745 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3591 event pairs, 256 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 1566. Up to 618 conditions per place. [2025-01-10 06:53:01,623 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 32 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2025-01-10 06:53:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 262 flow [2025-01-10 06:53:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:53:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:53:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2025-01-10 06:53:01,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2025-01-10 06:53:01,625 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 142 flow. Second operand 10 states and 185 transitions. [2025-01-10 06:53:01,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 262 flow [2025-01-10 06:53:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:01,629 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 204 flow [2025-01-10 06:53:01,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-01-10 06:53:01,631 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-01-10 06:53:01,631 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 204 flow [2025-01-10 06:53:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:53:01,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:01,632 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:01,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:53:01,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:01,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:01,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash 500645971, now seen corresponding path program 1 times [2025-01-10 06:53:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155155354] [2025-01-10 06:53:01,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:53:01,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:53:01,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155155354] [2025-01-10 06:53:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155155354] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:01,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656233625] [2025-01-10 06:53:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:01,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:01,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:01,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:01,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:53:01,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2025-01-10 06:53:01,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:01,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:53:01,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:01,953 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2025-01-10 06:53:01,954 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-01-10 06:53:01,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 590 events. 315/590 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2675 event pairs, 112 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 1288. Up to 473 conditions per place. [2025-01-10 06:53:01,957 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 45 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2025-01-10 06:53:01,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 317 flow [2025-01-10 06:53:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2025-01-10 06:53:01,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-01-10 06:53:01,958 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 204 flow. Second operand 3 states and 82 transitions. [2025-01-10 06:53:01,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 317 flow [2025-01-10 06:53:01,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 306 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-10 06:53:01,960 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2025-01-10 06:53:01,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2025-01-10 06:53:01,961 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-01-10 06:53:01,961 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2025-01-10 06:53:01,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2025-01-10 06:53:01,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:01,961 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:01,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:53:01,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:01,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash 500645972, now seen corresponding path program 1 times [2025-01-10 06:53:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276463955] [2025-01-10 06:53:01,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:01,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:53:01,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:53:01,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:01,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276463955] [2025-01-10 06:53:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276463955] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:02,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:02,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:53:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307473865] [2025-01-10 06:53:02,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:02,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:02,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:02,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:02,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2025-01-10 06:53:02,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-01-10 06:53:02,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:02,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2025-01-10 06:53:02,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:02,150 INFO L124 PetriNetUnfolderBase]: 337/659 cut-off events. [2025-01-10 06:53:02,150 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-01-10 06:53:02,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 659 events. 337/659 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3024 event pairs, 245 based on Foata normal form. 5/543 useless extension candidates. Maximal degree in co-relation 1452. Up to 538 conditions per place. [2025-01-10 06:53:02,154 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 39 selfloop transitions, 3 changer transitions 11/66 dead transitions. [2025-01-10 06:53:02,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 334 flow [2025-01-10 06:53:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-01-10 06:53:02,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.546875 [2025-01-10 06:53:02,155 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 4 states and 105 transitions. [2025-01-10 06:53:02,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 334 flow [2025-01-10 06:53:02,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:02,157 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 206 flow [2025-01-10 06:53:02,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2025-01-10 06:53:02,157 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-01-10 06:53:02,157 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 206 flow [2025-01-10 06:53:02,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-01-10 06:53:02,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:02,157 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:02,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:53:02,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:02,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1565981228, now seen corresponding path program 1 times [2025-01-10 06:53:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:02,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748861909] [2025-01-10 06:53:02,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:02,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:02,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:02,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:02,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:02,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748861909] [2025-01-10 06:53:02,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748861909] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:02,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787874391] [2025-01-10 06:53:02,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:02,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:02,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:02,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:02,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:53:02,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:53:02,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:53:02,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:02,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:53:02,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:02,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787874391] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:02,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:02,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-01-10 06:53:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51429428] [2025-01-10 06:53:02,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:02,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:02,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:02,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:53:02,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:53:02,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2025-01-10 06:53:02,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:02,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:53:02,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:02,465 INFO L124 PetriNetUnfolderBase]: 255/504 cut-off events. [2025-01-10 06:53:02,465 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-01-10 06:53:02,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 504 events. 255/504 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2174 event pairs, 107 based on Foata normal form. 40/440 useless extension candidates. Maximal degree in co-relation 1113. Up to 292 conditions per place. [2025-01-10 06:53:02,467 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 38 selfloop transitions, 8 changer transitions 4/62 dead transitions. [2025-01-10 06:53:02,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 327 flow [2025-01-10 06:53:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-01-10 06:53:02,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 06:53:02,468 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 206 flow. Second operand 4 states and 96 transitions. [2025-01-10 06:53:02,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 327 flow [2025-01-10 06:53:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 317 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-01-10 06:53:02,470 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 204 flow [2025-01-10 06:53:02,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-01-10 06:53:02,471 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-01-10 06:53:02,471 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 204 flow [2025-01-10 06:53:02,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2025-01-10 06:53:02,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:02,471 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:02,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:53:02,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:02,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:02,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 432870926, now seen corresponding path program 2 times [2025-01-10 06:53:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501915323] [2025-01-10 06:53:02,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:02,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-10 06:53:02,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-01-10 06:53:02,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:02,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:02,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501915323] [2025-01-10 06:53:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501915323] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093464466] [2025-01-10 06:53:02,736 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:02,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:02,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:53:02,774 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-10 06:53:02,781 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-01-10 06:53:02,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:53:02,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:02,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:02,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:02,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:53:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093464466] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:02,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:02,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:53:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914766302] [2025-01-10 06:53:02,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:02,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:02,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:02,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:02,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:02,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-01-10 06:53:02,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:02,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:02,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:02,898 INFO L124 PetriNetUnfolderBase]: 228/461 cut-off events. [2025-01-10 06:53:02,899 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2025-01-10 06:53:02,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 461 events. 228/461 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1911 event pairs, 157 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1054. Up to 387 conditions per place. [2025-01-10 06:53:02,901 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 24 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2025-01-10 06:53:02,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 272 flow [2025-01-10 06:53:02,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-01-10 06:53:02,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2025-01-10 06:53:02,902 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 204 flow. Second operand 4 states and 82 transitions. [2025-01-10 06:53:02,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 272 flow [2025-01-10 06:53:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 246 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-01-10 06:53:02,903 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 198 flow [2025-01-10 06:53:02,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-01-10 06:53:02,904 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2025-01-10 06:53:02,904 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 198 flow [2025-01-10 06:53:02,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2025-01-10 06:53:02,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:02,904 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:02,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:03,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-10 06:53:03,109 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:03,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 212449056, now seen corresponding path program 1 times [2025-01-10 06:53:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233643066] [2025-01-10 06:53:03,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:03,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:03,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:03,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233643066] [2025-01-10 06:53:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233643066] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:03,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:03,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:53:03,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940026709] [2025-01-10 06:53:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:03,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:03,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:03,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:03,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:53:03,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 06:53:03,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:03,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:53:03,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:03,234 INFO L124 PetriNetUnfolderBase]: 239/534 cut-off events. [2025-01-10 06:53:03,234 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-01-10 06:53:03,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 534 events. 239/534 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2333 event pairs, 65 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1070. Up to 273 conditions per place. [2025-01-10 06:53:03,237 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2025-01-10 06:53:03,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 345 flow [2025-01-10 06:53:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2025-01-10 06:53:03,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-01-10 06:53:03,238 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 198 flow. Second operand 3 states and 83 transitions. [2025-01-10 06:53:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 345 flow [2025-01-10 06:53:03,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 315 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:53:03,239 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 181 flow [2025-01-10 06:53:03,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-01-10 06:53:03,241 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-01-10 06:53:03,241 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 181 flow [2025-01-10 06:53:03,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2025-01-10 06:53:03,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:03,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:03,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:53:03,241 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:03,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 212449057, now seen corresponding path program 1 times [2025-01-10 06:53:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727993302] [2025-01-10 06:53:03,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:03,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:03,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:03,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727993302] [2025-01-10 06:53:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727993302] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566050852] [2025-01-10 06:53:03,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:03,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:03,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:03,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:53:03,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:53:03,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:53:03,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:03,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:53:03,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:03,513 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566050852] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:03,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-01-10 06:53:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35731736] [2025-01-10 06:53:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:03,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:53:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:03,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:53:03,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:53:03,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:03,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2025-01-10 06:53:03,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:03,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:03,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:03,652 INFO L124 PetriNetUnfolderBase]: 299/650 cut-off events. [2025-01-10 06:53:03,652 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-01-10 06:53:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 650 events. 299/650 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2939 event pairs, 50 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1356. Up to 210 conditions per place. [2025-01-10 06:53:03,655 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 11 changer transitions 4/88 dead transitions. [2025-01-10 06:53:03,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 436 flow [2025-01-10 06:53:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:53:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:53:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-01-10 06:53:03,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2025-01-10 06:53:03,656 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 181 flow. Second operand 6 states and 149 transitions. [2025-01-10 06:53:03,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 436 flow [2025-01-10 06:53:03,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:03,657 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 233 flow [2025-01-10 06:53:03,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-01-10 06:53:03,658 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-01-10 06:53:03,658 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 233 flow [2025-01-10 06:53:03,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2025-01-10 06:53:03,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:03,658 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:03,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:03,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:53:03,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:03,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1994871581, now seen corresponding path program 1 times [2025-01-10 06:53:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238820120] [2025-01-10 06:53:03,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:03,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:03,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:03,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:03,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:04,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238820120] [2025-01-10 06:53:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238820120] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863020397] [2025-01-10 06:53:04,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:04,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:04,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:04,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:04,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:53:04,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:53:04,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:53:04,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:04,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:04,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 06:53:04,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:04,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:04,871 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 17 treesize of output 9 [2025-01-10 06:53:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:04,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:05,176 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 21 treesize of output 19 [2025-01-10 06:53:05,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-01-10 06:53:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:05,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863020397] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:05,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:05,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 25 [2025-01-10 06:53:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640897229] [2025-01-10 06:53:05,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:05,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-10 06:53:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:05,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-10 06:53:05,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2025-01-10 06:53:05,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-01-10 06:53:05,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 233 flow. Second operand has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 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) [2025-01-10 06:53:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:05,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-01-10 06:53:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:07,242 INFO L124 PetriNetUnfolderBase]: 1185/2274 cut-off events. [2025-01-10 06:53:07,243 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2025-01-10 06:53:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2274 events. 1185/2274 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13807 event pairs, 160 based on Foata normal form. 10/2062 useless extension candidates. Maximal degree in co-relation 4861. Up to 400 conditions per place. [2025-01-10 06:53:07,253 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 186 selfloop transitions, 54 changer transitions 27/274 dead transitions. [2025-01-10 06:53:07,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 274 transitions, 1468 flow [2025-01-10 06:53:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-10 06:53:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-01-10 06:53:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 525 transitions. [2025-01-10 06:53:07,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2025-01-10 06:53:07,256 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 233 flow. Second operand 30 states and 525 transitions. [2025-01-10 06:53:07,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 274 transitions, 1468 flow [2025-01-10 06:53:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 274 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:07,261 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 644 flow [2025-01-10 06:53:07,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=644, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2025-01-10 06:53:07,262 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2025-01-10 06:53:07,262 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 644 flow [2025-01-10 06:53:07,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 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) [2025-01-10 06:53:07,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:07,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:07,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:07,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:53:07,463 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:07,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:07,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1695468389, now seen corresponding path program 1 times [2025-01-10 06:53:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882966657] [2025-01-10 06:53:07,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:07,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 06:53:07,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 06:53:07,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:07,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882966657] [2025-01-10 06:53:07,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882966657] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:07,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:07,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:53:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368629037] [2025-01-10 06:53:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:07,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:53:07,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:07,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:53:07,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:53:07,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:53:07,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2025-01-10 06:53:07,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:07,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:53:07,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:07,699 INFO L124 PetriNetUnfolderBase]: 892/1837 cut-off events. [2025-01-10 06:53:07,699 INFO L125 PetriNetUnfolderBase]: For 4019/4036 co-relation queries the response was YES. [2025-01-10 06:53:07,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 1837 events. 892/1837 cut-off events. For 4019/4036 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11257 event pairs, 370 based on Foata normal form. 6/1842 useless extension candidates. Maximal degree in co-relation 6054. Up to 1452 conditions per place. [2025-01-10 06:53:07,709 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 84 selfloop transitions, 2 changer transitions 7/106 dead transitions. [2025-01-10 06:53:07,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 928 flow [2025-01-10 06:53:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:53:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:53:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2025-01-10 06:53:07,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2025-01-10 06:53:07,711 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 644 flow. Second operand 3 states and 85 transitions. [2025-01-10 06:53:07,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 928 flow [2025-01-10 06:53:07,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 867 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-01-10 06:53:07,726 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 522 flow [2025-01-10 06:53:07,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2025-01-10 06:53:07,727 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-01-10 06:53:07,727 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 522 flow [2025-01-10 06:53:07,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2025-01-10 06:53:07,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:07,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:07,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 06:53:07,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:07,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash 243669652, now seen corresponding path program 1 times [2025-01-10 06:53:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:07,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481873348] [2025-01-10 06:53:07,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:07,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 06:53:07,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:53:07,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:07,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481873348] [2025-01-10 06:53:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481873348] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386613689] [2025-01-10 06:53:07,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:07,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:07,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:07,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:53:07,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 06:53:07,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:53:07,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:07,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:07,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:53:07,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:07,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:53:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386613689] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:53:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-01-10 06:53:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701080022] [2025-01-10 06:53:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:07,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:07,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:07,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:53:07,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-01-10 06:53:07,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-01-10 06:53:07,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:07,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-01-10 06:53:07,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:08,207 INFO L124 PetriNetUnfolderBase]: 1431/2889 cut-off events. [2025-01-10 06:53:08,208 INFO L125 PetriNetUnfolderBase]: For 6158/6218 co-relation queries the response was YES. [2025-01-10 06:53:08,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 2889 events. 1431/2889 cut-off events. For 6158/6218 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18389 event pairs, 398 based on Foata normal form. 32/2898 useless extension candidates. Maximal degree in co-relation 8740. Up to 1046 conditions per place. [2025-01-10 06:53:08,228 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 92 selfloop transitions, 26 changer transitions 3/134 dead transitions. [2025-01-10 06:53:08,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1118 flow [2025-01-10 06:53:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-01-10 06:53:08,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-01-10 06:53:08,230 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 522 flow. Second operand 4 states and 110 transitions. [2025-01-10 06:53:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1118 flow [2025-01-10 06:53:08,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1116 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:08,243 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 819 flow [2025-01-10 06:53:08,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2025-01-10 06:53:08,244 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2025-01-10 06:53:08,245 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 819 flow [2025-01-10 06:53:08,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-01-10 06:53:08,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:08,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:08,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:53:08,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:08,446 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:08,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:08,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1978348935, now seen corresponding path program 1 times [2025-01-10 06:53:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634671256] [2025-01-10 06:53:08,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:08,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:08,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 06:53:08,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:53:08,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:08,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634671256] [2025-01-10 06:53:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634671256] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555642070] [2025-01-10 06:53:09,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:09,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:09,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:53:09,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-10 06:53:09,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-10 06:53:09,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:09,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:09,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 06:53:09,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:09,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:09,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:09,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-01-10 06:53:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:53:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555642070] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:53:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 6] total 22 [2025-01-10 06:53:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242250480] [2025-01-10 06:53:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:53:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:09,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:53:09,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:53:09,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-01-10 06:53:09,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2025-01-10 06:53:09,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:09,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-01-10 06:53:09,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:09,734 INFO L124 PetriNetUnfolderBase]: 1720/3391 cut-off events. [2025-01-10 06:53:09,734 INFO L125 PetriNetUnfolderBase]: For 9587/9611 co-relation queries the response was YES. [2025-01-10 06:53:09,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12414 conditions, 3391 events. 1720/3391 cut-off events. For 9587/9611 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 21781 event pairs, 242 based on Foata normal form. 42/3392 useless extension candidates. Maximal degree in co-relation 11146. Up to 1567 conditions per place. [2025-01-10 06:53:09,754 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 116 selfloop transitions, 18 changer transitions 5/150 dead transitions. [2025-01-10 06:53:09,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1467 flow [2025-01-10 06:53:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:53:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:53:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-01-10 06:53:09,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-01-10 06:53:09,755 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 819 flow. Second operand 7 states and 154 transitions. [2025-01-10 06:53:09,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1467 flow [2025-01-10 06:53:09,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1455 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-10 06:53:09,771 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 892 flow [2025-01-10 06:53:09,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2025-01-10 06:53:09,771 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-01-10 06:53:09,771 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 892 flow [2025-01-10 06:53:09,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2025-01-10 06:53:09,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:09,772 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:09,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 06:53:09,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:09,973 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:09,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1324139037, now seen corresponding path program 2 times [2025-01-10 06:53:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:09,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252947689] [2025-01-10 06:53:09,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:09,980 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-10 06:53:09,986 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 06:53:09,987 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:53:09,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:53:10,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:10,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252947689] [2025-01-10 06:53:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252947689] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:53:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421063270] [2025-01-10 06:53:10,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:10,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:53:10,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:10,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:53:10,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:53:10,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-01-10 06:53:10,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 892 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2025-01-10 06:53:10,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:10,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-01-10 06:53:10,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:10,452 INFO L124 PetriNetUnfolderBase]: 1735/3464 cut-off events. [2025-01-10 06:53:10,452 INFO L125 PetriNetUnfolderBase]: For 12017/12065 co-relation queries the response was YES. [2025-01-10 06:53:10,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 3464 events. 1735/3464 cut-off events. For 12017/12065 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 21567 event pairs, 145 based on Foata normal form. 46/3477 useless extension candidates. Maximal degree in co-relation 11686. Up to 777 conditions per place. [2025-01-10 06:53:10,477 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 135 selfloop transitions, 22 changer transitions 4/173 dead transitions. [2025-01-10 06:53:10,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 1764 flow [2025-01-10 06:53:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:53:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:53:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-01-10 06:53:10,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-01-10 06:53:10,479 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 892 flow. Second operand 8 states and 188 transitions. [2025-01-10 06:53:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 1764 flow [2025-01-10 06:53:10,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1709 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-01-10 06:53:10,505 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 927 flow [2025-01-10 06:53:10,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2025-01-10 06:53:10,506 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2025-01-10 06:53:10,506 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 927 flow [2025-01-10 06:53:10,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2025-01-10 06:53:10,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:10,506 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:10,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 06:53:10,507 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:10,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:10,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2072375221, now seen corresponding path program 1 times [2025-01-10 06:53:10,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:10,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785058705] [2025-01-10 06:53:10,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:10,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:10,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 06:53:10,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 06:53:10,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:10,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785058705] [2025-01-10 06:53:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785058705] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192756963] [2025-01-10 06:53:10,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:10,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:10,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:10,644 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:10,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:53:10,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-10 06:53:10,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-10 06:53:10,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:10,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:10,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:53:10,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:10,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:53:10,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192756963] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:10,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:10,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-01-10 06:53:10,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792650281] [2025-01-10 06:53:10,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:10,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-10 06:53:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:10,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-10 06:53:10,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-01-10 06:53:10,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-01-10 06:53:10,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 927 flow. Second operand has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 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) [2025-01-10 06:53:10,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:10,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-01-10 06:53:10,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:11,407 INFO L124 PetriNetUnfolderBase]: 1126/2372 cut-off events. [2025-01-10 06:53:11,407 INFO L125 PetriNetUnfolderBase]: For 9251/9263 co-relation queries the response was YES. [2025-01-10 06:53:11,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 2372 events. 1126/2372 cut-off events. For 9251/9263 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13566 event pairs, 392 based on Foata normal form. 11/2354 useless extension candidates. Maximal degree in co-relation 8879. Up to 895 conditions per place. [2025-01-10 06:53:11,420 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 52 selfloop transitions, 22 changer transitions 27/114 dead transitions. [2025-01-10 06:53:11,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1025 flow [2025-01-10 06:53:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-10 06:53:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-10 06:53:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-01-10 06:53:11,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36217948717948717 [2025-01-10 06:53:11,423 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 927 flow. Second operand 13 states and 226 transitions. [2025-01-10 06:53:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1025 flow [2025-01-10 06:53:11,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 940 flow, removed 22 selfloop flow, removed 11 redundant places. [2025-01-10 06:53:11,438 INFO L231 Difference]: Finished difference. Result has 113 places, 74 transitions, 584 flow [2025-01-10 06:53:11,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2025-01-10 06:53:11,440 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2025-01-10 06:53:11,440 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 584 flow [2025-01-10 06:53:11,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 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) [2025-01-10 06:53:11,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:11,440 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:11,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:11,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:11,641 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:11,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1056353029, now seen corresponding path program 1 times [2025-01-10 06:53:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253907018] [2025-01-10 06:53:11,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:11,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 06:53:11,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 06:53:11,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:11,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253907018] [2025-01-10 06:53:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253907018] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257698920] [2025-01-10 06:53:11,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:11,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:11,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:11,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:53:11,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-10 06:53:11,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-10 06:53:11,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:11,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:11,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 06:53:11,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:11,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257698920] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:12,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2025-01-10 06:53:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028825002] [2025-01-10 06:53:12,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:12,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-10 06:53:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:12,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-10 06:53:12,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2025-01-10 06:53:12,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-01-10 06:53:12,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 584 flow. Second operand has 28 states, 28 states have (on average 14.464285714285714) internal successors, (405), 28 states have internal predecessors, (405), 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) [2025-01-10 06:53:12,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:12,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-01-10 06:53:12,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:13,215 INFO L124 PetriNetUnfolderBase]: 2672/5370 cut-off events. [2025-01-10 06:53:13,215 INFO L125 PetriNetUnfolderBase]: For 19867/19909 co-relation queries the response was YES. [2025-01-10 06:53:13,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20264 conditions, 5370 events. 2672/5370 cut-off events. For 19867/19909 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 36964 event pairs, 246 based on Foata normal form. 206/5550 useless extension candidates. Maximal degree in co-relation 19396. Up to 846 conditions per place. [2025-01-10 06:53:13,251 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 235 selfloop transitions, 72 changer transitions 14/334 dead transitions. [2025-01-10 06:53:13,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 334 transitions, 2928 flow [2025-01-10 06:53:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 06:53:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-10 06:53:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 589 transitions. [2025-01-10 06:53:13,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382440476190476 [2025-01-10 06:53:13,257 INFO L175 Difference]: Start difference. First operand has 113 places, 74 transitions, 584 flow. Second operand 28 states and 589 transitions. [2025-01-10 06:53:13,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 334 transitions, 2928 flow [2025-01-10 06:53:13,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 334 transitions, 2773 flow, removed 44 selfloop flow, removed 14 redundant places. [2025-01-10 06:53:13,298 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 1398 flow [2025-01-10 06:53:13,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1398, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2025-01-10 06:53:13,299 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-01-10 06:53:13,299 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 1398 flow [2025-01-10 06:53:13,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.464285714285714) internal successors, (405), 28 states have internal predecessors, (405), 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) [2025-01-10 06:53:13,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:13,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:13,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 06:53:13,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 06:53:13,500 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:13,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1974119309, now seen corresponding path program 1 times [2025-01-10 06:53:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:13,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258909753] [2025-01-10 06:53:13,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:13,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 06:53:13,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 06:53:13,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:13,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-10 06:53:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258909753] [2025-01-10 06:53:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258909753] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:53:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:53:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:53:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328905360] [2025-01-10 06:53:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:53:13,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:53:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:13,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:53:13,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:53:13,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2025-01-10 06:53:13,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 1398 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-01-10 06:53:13,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:13,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2025-01-10 06:53:13,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:14,429 INFO L124 PetriNetUnfolderBase]: 4268/8519 cut-off events. [2025-01-10 06:53:14,429 INFO L125 PetriNetUnfolderBase]: For 49178/49260 co-relation queries the response was YES. [2025-01-10 06:53:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35127 conditions, 8519 events. 4268/8519 cut-off events. For 49178/49260 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 62916 event pairs, 1034 based on Foata normal form. 376/8857 useless extension candidates. Maximal degree in co-relation 30639. Up to 3657 conditions per place. [2025-01-10 06:53:14,469 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 155 selfloop transitions, 4 changer transitions 10/182 dead transitions. [2025-01-10 06:53:14,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2485 flow [2025-01-10 06:53:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:53:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:53:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2025-01-10 06:53:14,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-01-10 06:53:14,470 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 1398 flow. Second operand 4 states and 100 transitions. [2025-01-10 06:53:14,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2485 flow [2025-01-10 06:53:14,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 182 transitions, 2357 flow, removed 56 selfloop flow, removed 7 redundant places. [2025-01-10 06:53:14,533 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 1280 flow [2025-01-10 06:53:14,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1280, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2025-01-10 06:53:14,533 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2025-01-10 06:53:14,533 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 1280 flow [2025-01-10 06:53:14,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-01-10 06:53:14,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:14,534 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:14,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 06:53:14,534 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash -73011831, now seen corresponding path program 1 times [2025-01-10 06:53:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:14,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498122228] [2025-01-10 06:53:14,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:14,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:14,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 06:53:14,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 06:53:14,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:14,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:15,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498122228] [2025-01-10 06:53:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498122228] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584940155] [2025-01-10 06:53:15,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:15,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:15,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:15,259 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:15,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:53:15,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 06:53:15,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 06:53:15,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:15,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:15,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-10 06:53:15,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:15,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:16,039 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-01-10 06:53:16,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-01-10 06:53:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:16,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:16,512 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 58 treesize of output 52 [2025-01-10 06:53:16,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 103 [2025-01-10 06:53:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584940155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:16,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:16,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 46 [2025-01-10 06:53:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226774192] [2025-01-10 06:53:16,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:16,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-10 06:53:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:16,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-10 06:53:16,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1973, Unknown=0, NotChecked=0, Total=2256 [2025-01-10 06:53:17,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-01-10 06:53:17,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 1280 flow. Second operand has 48 states, 48 states have (on average 10.75) internal successors, (516), 48 states have internal predecessors, (516), 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) [2025-01-10 06:53:17,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:17,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-01-10 06:53:17,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:24,298 INFO L124 PetriNetUnfolderBase]: 9110/16879 cut-off events. [2025-01-10 06:53:24,298 INFO L125 PetriNetUnfolderBase]: For 83006/83006 co-relation queries the response was YES. [2025-01-10 06:53:24,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68665 conditions, 16879 events. 9110/16879 cut-off events. For 83006/83006 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 127050 event pairs, 598 based on Foata normal form. 872/17749 useless extension candidates. Maximal degree in co-relation 59332. Up to 3563 conditions per place. [2025-01-10 06:53:24,419 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 440 selfloop transitions, 403 changer transitions 10/862 dead transitions. [2025-01-10 06:53:24,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 862 transitions, 9356 flow [2025-01-10 06:53:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-01-10 06:53:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2025-01-10 06:53:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 1394 transitions. [2025-01-10 06:53:24,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3226851851851852 [2025-01-10 06:53:24,423 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 1280 flow. Second operand 90 states and 1394 transitions. [2025-01-10 06:53:24,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 862 transitions, 9356 flow [2025-01-10 06:53:24,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 862 transitions, 8913 flow, removed 220 selfloop flow, removed 1 redundant places. [2025-01-10 06:53:24,580 INFO L231 Difference]: Finished difference. Result has 255 places, 517 transitions, 7138 flow [2025-01-10 06:53:24,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=7138, PETRI_PLACES=255, PETRI_TRANSITIONS=517} [2025-01-10 06:53:24,581 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 209 predicate places. [2025-01-10 06:53:24,584 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 517 transitions, 7138 flow [2025-01-10 06:53:24,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 10.75) internal successors, (516), 48 states have internal predecessors, (516), 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) [2025-01-10 06:53:24,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:24,585 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:24,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:24,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:24,786 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:24,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1003576853, now seen corresponding path program 1 times [2025-01-10 06:53:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119986627] [2025-01-10 06:53:24,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:24,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-10 06:53:24,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:24,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:24,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119986627] [2025-01-10 06:53:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119986627] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348189752] [2025-01-10 06:53:25,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:53:25,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:25,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:25,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:53:25,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-10 06:53:25,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:25,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:53:25,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:25,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-10 06:53:25,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:25,920 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:53:25,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-01-10 06:53:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:25,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:25,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:25,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2025-01-10 06:53:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:26,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348189752] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:26,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2025-01-10 06:53:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537425263] [2025-01-10 06:53:26,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:26,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-10 06:53:26,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:26,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-10 06:53:26,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1590, Unknown=0, NotChecked=0, Total=1806 [2025-01-10 06:53:26,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-01-10 06:53:26,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 517 transitions, 7138 flow. Second operand has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 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) [2025-01-10 06:53:26,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:26,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-01-10 06:53:26,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:29,401 INFO L124 PetriNetUnfolderBase]: 4123/8328 cut-off events. [2025-01-10 06:53:29,401 INFO L125 PetriNetUnfolderBase]: For 168939/169193 co-relation queries the response was YES. [2025-01-10 06:53:29,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47528 conditions, 8328 events. 4123/8328 cut-off events. For 168939/169193 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 61688 event pairs, 274 based on Foata normal form. 412/8714 useless extension candidates. Maximal degree in co-relation 47350. Up to 2211 conditions per place. [2025-01-10 06:53:29,465 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 282 selfloop transitions, 173 changer transitions 5/474 dead transitions. [2025-01-10 06:53:29,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 474 transitions, 6729 flow [2025-01-10 06:53:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-10 06:53:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-01-10 06:53:29,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 523 transitions. [2025-01-10 06:53:29,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3404947916666667 [2025-01-10 06:53:29,467 INFO L175 Difference]: Start difference. First operand has 255 places, 517 transitions, 7138 flow. Second operand 32 states and 523 transitions. [2025-01-10 06:53:29,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 474 transitions, 6729 flow [2025-01-10 06:53:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 474 transitions, 5879 flow, removed 329 selfloop flow, removed 35 redundant places. [2025-01-10 06:53:29,709 INFO L231 Difference]: Finished difference. Result has 243 places, 341 transitions, 4564 flow [2025-01-10 06:53:29,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4564, PETRI_PLACES=243, PETRI_TRANSITIONS=341} [2025-01-10 06:53:29,710 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 197 predicate places. [2025-01-10 06:53:29,710 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 341 transitions, 4564 flow [2025-01-10 06:53:29,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 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) [2025-01-10 06:53:29,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:29,711 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:29,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:29,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:29,911 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:29,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1615972305, now seen corresponding path program 2 times [2025-01-10 06:53:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576968473] [2025-01-10 06:53:29,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:29,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:29,916 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-10 06:53:29,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:29,923 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:53:29,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:30,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576968473] [2025-01-10 06:53:30,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576968473] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901187505] [2025-01-10 06:53:30,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:53:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:30,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:30,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 06:53:30,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-01-10 06:53:30,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:30,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:53:30,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:30,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-10 06:53:30,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:30,407 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:53:30,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-01-10 06:53:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:30,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:30,486 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-10 06:53:30,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2025-01-10 06:53:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:53:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901187505] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:30,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2025-01-10 06:53:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233275114] [2025-01-10 06:53:30,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:30,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-10 06:53:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:30,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-10 06:53:30,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2025-01-10 06:53:30,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-01-10 06:53:30,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 341 transitions, 4564 flow. Second operand has 36 states, 36 states have (on average 11.555555555555555) internal successors, (416), 36 states have internal predecessors, (416), 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) [2025-01-10 06:53:30,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:30,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-01-10 06:53:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:34,443 INFO L124 PetriNetUnfolderBase]: 6982/13447 cut-off events. [2025-01-10 06:53:34,444 INFO L125 PetriNetUnfolderBase]: For 272891/273411 co-relation queries the response was YES. [2025-01-10 06:53:34,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82171 conditions, 13447 events. 6982/13447 cut-off events. For 272891/273411 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 100481 event pairs, 705 based on Foata normal form. 778/14163 useless extension candidates. Maximal degree in co-relation 81080. Up to 3296 conditions per place. [2025-01-10 06:53:34,552 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 534 selfloop transitions, 298 changer transitions 9/855 dead transitions. [2025-01-10 06:53:34,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 855 transitions, 12290 flow [2025-01-10 06:53:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-01-10 06:53:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-01-10 06:53:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 963 transitions. [2025-01-10 06:53:34,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36477272727272725 [2025-01-10 06:53:34,554 INFO L175 Difference]: Start difference. First operand has 243 places, 341 transitions, 4564 flow. Second operand 55 states and 963 transitions. [2025-01-10 06:53:34,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 855 transitions, 12290 flow [2025-01-10 06:53:35,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 855 transitions, 11795 flow, removed 135 selfloop flow, removed 18 redundant places. [2025-01-10 06:53:35,022 INFO L231 Difference]: Finished difference. Result has 298 places, 511 transitions, 7763 flow [2025-01-10 06:53:35,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=7763, PETRI_PLACES=298, PETRI_TRANSITIONS=511} [2025-01-10 06:53:35,023 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 252 predicate places. [2025-01-10 06:53:35,023 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 511 transitions, 7763 flow [2025-01-10 06:53:35,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.555555555555555) internal successors, (416), 36 states have internal predecessors, (416), 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) [2025-01-10 06:53:35,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:35,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:35,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:35,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:35,224 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:35,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -321472095, now seen corresponding path program 3 times [2025-01-10 06:53:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16930254] [2025-01-10 06:53:35,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:53:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:35,229 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-01-10 06:53:35,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:35,238 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 06:53:35,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:53:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16930254] [2025-01-10 06:53:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16930254] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072708026] [2025-01-10 06:53:35,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:53:35,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:35,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:35,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 06:53:35,581 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-01-10 06:53:35,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:35,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 06:53:35,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:35,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-10 06:53:35,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:35,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:36,306 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-01-10 06:53:36,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-01-10 06:53:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:36,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:36,908 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 78 treesize of output 70 [2025-01-10 06:53:36,935 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-01-10 06:53:36,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 135 [2025-01-10 06:53:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072708026] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:37,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2025-01-10 06:53:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249943475] [2025-01-10 06:53:37,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:37,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-10 06:53:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:37,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-10 06:53:37,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2289, Unknown=0, NotChecked=0, Total=2652 [2025-01-10 06:53:37,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-01-10 06:53:37,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 511 transitions, 7763 flow. Second operand has 52 states, 52 states have (on average 10.615384615384615) internal successors, (552), 52 states have internal predecessors, (552), 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) [2025-01-10 06:53:37,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:37,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-01-10 06:53:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:53:51,786 INFO L124 PetriNetUnfolderBase]: 11841/22422 cut-off events. [2025-01-10 06:53:51,787 INFO L125 PetriNetUnfolderBase]: For 448341/449205 co-relation queries the response was YES. [2025-01-10 06:53:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143630 conditions, 22422 events. 11841/22422 cut-off events. For 448341/449205 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 180972 event pairs, 310 based on Foata normal form. 802/23198 useless extension candidates. Maximal degree in co-relation 140416. Up to 4604 conditions per place. [2025-01-10 06:53:52,023 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 662 selfloop transitions, 1114 changer transitions 17/1804 dead transitions. [2025-01-10 06:53:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1804 transitions, 26806 flow [2025-01-10 06:53:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2025-01-10 06:53:52,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2025-01-10 06:53:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 2590 transitions. [2025-01-10 06:53:52,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2932518115942029 [2025-01-10 06:53:52,027 INFO L175 Difference]: Start difference. First operand has 298 places, 511 transitions, 7763 flow. Second operand 184 states and 2590 transitions. [2025-01-10 06:53:52,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1804 transitions, 26806 flow [2025-01-10 06:53:54,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1804 transitions, 25919 flow, removed 406 selfloop flow, removed 13 redundant places. [2025-01-10 06:53:54,054 INFO L231 Difference]: Finished difference. Result has 506 places, 1245 transitions, 22721 flow [2025-01-10 06:53:54,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7386, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=412, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=184, PETRI_FLOW=22721, PETRI_PLACES=506, PETRI_TRANSITIONS=1245} [2025-01-10 06:53:54,055 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 460 predicate places. [2025-01-10 06:53:54,055 INFO L471 AbstractCegarLoop]: Abstraction has has 506 places, 1245 transitions, 22721 flow [2025-01-10 06:53:54,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 10.615384615384615) internal successors, (552), 52 states have internal predecessors, (552), 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) [2025-01-10 06:53:54,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:53:54,055 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:53:54,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 06:53:54,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-01-10 06:53:54,256 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:53:54,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:53:54,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1998185893, now seen corresponding path program 4 times [2025-01-10 06:53:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:53:54,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072319482] [2025-01-10 06:53:54,256 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:53:54,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:53:54,265 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-10 06:53:54,276 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:54,276 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:53:54,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:55,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:53:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072319482] [2025-01-10 06:53:55,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072319482] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:53:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303576458] [2025-01-10 06:53:55,140 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 06:53:55,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:53:55,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:53:55,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:53:55,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 06:53:55,184 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-10 06:53:55,200 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:53:55,201 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 06:53:55,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:53:55,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-10 06:53:55,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:53:55,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-01-10 06:53:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:55,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:53:56,212 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 79 treesize of output 71 [2025-01-10 06:53:56,228 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:53:56,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 139 [2025-01-10 06:53:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:53:56,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303576458] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:53:56,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:53:56,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 48 [2025-01-10 06:53:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718007635] [2025-01-10 06:53:56,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:53:56,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-10 06:53:56,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:53:56,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-10 06:53:56,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2158, Unknown=0, NotChecked=0, Total=2450 [2025-01-10 06:53:57,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-01-10 06:53:57,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1245 transitions, 22721 flow. Second operand has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 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) [2025-01-10 06:53:57,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:53:57,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-01-10 06:53:57,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:08,128 INFO L124 PetriNetUnfolderBase]: 12668/24541 cut-off events. [2025-01-10 06:54:08,128 INFO L125 PetriNetUnfolderBase]: For 615718/616700 co-relation queries the response was YES. [2025-01-10 06:54:08,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174438 conditions, 24541 events. 12668/24541 cut-off events. For 615718/616700 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 205667 event pairs, 1543 based on Foata normal form. 900/25371 useless extension candidates. Maximal degree in co-relation 172924. Up to 13167 conditions per place. [2025-01-10 06:54:08,644 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 811 selfloop transitions, 828 changer transitions 60/1769 dead transitions. [2025-01-10 06:54:08,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1769 transitions, 33071 flow [2025-01-10 06:54:08,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-01-10 06:54:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2025-01-10 06:54:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 1328 transitions. [2025-01-10 06:54:08,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31086142322097376 [2025-01-10 06:54:08,647 INFO L175 Difference]: Start difference. First operand has 506 places, 1245 transitions, 22721 flow. Second operand 89 states and 1328 transitions. [2025-01-10 06:54:08,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1769 transitions, 33071 flow [2025-01-10 06:54:13,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1769 transitions, 29632 flow, removed 1299 selfloop flow, removed 39 redundant places. [2025-01-10 06:54:13,641 INFO L231 Difference]: Finished difference. Result has 584 places, 1493 transitions, 27141 flow [2025-01-10 06:54:13,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=20138, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=27141, PETRI_PLACES=584, PETRI_TRANSITIONS=1493} [2025-01-10 06:54:13,642 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 538 predicate places. [2025-01-10 06:54:13,642 INFO L471 AbstractCegarLoop]: Abstraction has has 584 places, 1493 transitions, 27141 flow [2025-01-10 06:54:13,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 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) [2025-01-10 06:54:13,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:13,643 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:13,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 06:54:13,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:13,843 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-01-10 06:54:13,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash -609933717, now seen corresponding path program 5 times [2025-01-10 06:54:13,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:13,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133310579] [2025-01-10 06:54:13,844 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:54:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:13,851 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 3 equivalence classes. [2025-01-10 06:54:13,859 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:54:13,859 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 06:54:13,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133310579] [2025-01-10 06:54:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133310579] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960721185] [2025-01-10 06:54:14,641 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 06:54:14,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:14,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:14,646 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:14,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 06:54:14,690 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 3 equivalence classes. [2025-01-10 06:54:14,707 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-01-10 06:54:14,707 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 06:54:14,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:14,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 06:54:14,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:14,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:15,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-10 06:54:15,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-01-10 06:54:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:54:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960721185] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:15,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 06:54:15,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18, 11] total 38 [2025-01-10 06:54:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005533432] [2025-01-10 06:54:15,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:15,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 06:54:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:15,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 06:54:15,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2025-01-10 06:54:15,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-01-10 06:54:15,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 1493 transitions, 27141 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 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) [2025-01-10 06:54:15,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:15,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-01-10 06:54:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:24,416 INFO L124 PetriNetUnfolderBase]: 13267/25686 cut-off events. [2025-01-10 06:54:24,416 INFO L125 PetriNetUnfolderBase]: For 626484/627558 co-relation queries the response was YES. [2025-01-10 06:54:24,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180785 conditions, 25686 events. 13267/25686 cut-off events. For 626484/627558 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 217273 event pairs, 2289 based on Foata normal form. 860/26450 useless extension candidates. Maximal degree in co-relation 180521. Up to 15202 conditions per place. [2025-01-10 06:54:24,899 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 934 selfloop transitions, 731 changer transitions 11/1746 dead transitions. [2025-01-10 06:54:24,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 1746 transitions, 34541 flow [2025-01-10 06:54:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-10 06:54:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-01-10 06:54:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 446 transitions. [2025-01-10 06:54:24,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3871527777777778 [2025-01-10 06:54:24,900 INFO L175 Difference]: Start difference. First operand has 584 places, 1493 transitions, 27141 flow. Second operand 24 states and 446 transitions. [2025-01-10 06:54:24,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 1746 transitions, 34541 flow