./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-context1.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/test-context1.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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:56:26,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:56:26,844 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:56:26,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:56:26,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:56:26,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:56:26,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:56:26,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:56:26,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:56:26,877 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:56:26,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:56:26,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:56:26,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:56:26,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:56:26,879 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:56:26,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:56:26,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:56:26,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:56:26,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:26,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:26,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:56:26,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:56:26,881 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 -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2025-01-10 06:56:27,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:56:27,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:56:27,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:56:27,123 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:56:27,124 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:56:27,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-context1.wvr.c [2025-01-10 06:56:28,239 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91d3bcc5/247e8f7a9b744ab3ba8bd317c869f406/FLAG3b71b1d8f [2025-01-10 06:56:28,524 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:56:28,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2025-01-10 06:56:28,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91d3bcc5/247e8f7a9b744ab3ba8bd317c869f406/FLAG3b71b1d8f [2025-01-10 06:56:28,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b91d3bcc5/247e8f7a9b744ab3ba8bd317c869f406 [2025-01-10 06:56:28,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:56:28,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:56:28,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:56:28,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:56:28,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:56:28,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:28,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ab5cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28, skipping insertion in model container [2025-01-10 06:56:28,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:28,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:56:28,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:56:28,958 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:56:28,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:56:28,981 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:56:28,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28 WrapperNode [2025-01-10 06:56:28,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:56:28,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:56:28,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:56:28,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:56:28,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:28,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,003 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 142 [2025-01-10 06:56:29,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:56:29,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:56:29,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:56:29,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:56:29,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,018 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 06:56:29,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,023 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:56:29,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:56:29,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:56:29,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:56:29,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (1/1) ... [2025-01-10 06:56:29,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:56:29,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:29,052 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 06:56:29,057 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 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:56:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:56:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:56:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:56:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:56:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:56:29,072 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 06:56:29,130 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:56:29,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:56:29,441 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:56:29,441 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:56:29,796 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:56:29,796 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-10 06:56:29,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:29 BoogieIcfgContainer [2025-01-10 06:56:29,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:56:29,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:56:29,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:56:29,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:56:29,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:56:28" (1/3) ... [2025-01-10 06:56:29,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7a4e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:29, skipping insertion in model container [2025-01-10 06:56:29,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:56:28" (2/3) ... [2025-01-10 06:56:29,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7a4e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:56:29, skipping insertion in model container [2025-01-10 06:56:29,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:56:29" (3/3) ... [2025-01-10 06:56:29,804 INFO L128 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2025-01-10 06:56:29,815 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:56:29,816 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-context1.wvr.c that has 3 procedures, 38 locations, 1 initial locations, 3 loop locations, and 14 error locations. [2025-01-10 06:56:29,816 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:56:29,912 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:56:29,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 98 flow [2025-01-10 06:56:29,963 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2025-01-10 06:56:29,966 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 06:56:29,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 105 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-01-10 06:56:29,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 98 flow [2025-01-10 06:56:29,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 85 flow [2025-01-10 06:56:29,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:56:29,990 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;@493079b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:56:29,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-01-10 06:56:29,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:56:29,993 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:56:29,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:56:29,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:29,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:56:29,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:29,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 498998, now seen corresponding path program 1 times [2025-01-10 06:56:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412822826] [2025-01-10 06:56:30,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:30,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:56:30,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:56:30,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:30,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:30,133 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 06:56:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412822826] [2025-01-10 06:56:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412822826] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:30,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:30,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792251530] [2025-01-10 06:56:30,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:30,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:30,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:30,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:30,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2025-01-10 06:56:30,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 06:56:30,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:30,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2025-01-10 06:56:30,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:30,313 INFO L124 PetriNetUnfolderBase]: 264/457 cut-off events. [2025-01-10 06:56:30,313 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-01-10 06:56:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 457 events. 264/457 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1916 event pairs, 224 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 885. Up to 450 conditions per place. [2025-01-10 06:56:30,320 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2025-01-10 06:56:30,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 119 flow [2025-01-10 06:56:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2025-01-10 06:56:30,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3273809523809524 [2025-01-10 06:56:30,331 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 85 flow. Second operand 4 states and 55 transitions. [2025-01-10 06:56:30,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 119 flow [2025-01-10 06:56:30,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:30,337 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2025-01-10 06:56:30,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2025-01-10 06:56:30,341 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2025-01-10 06:56:30,343 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2025-01-10 06:56:30,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 06:56:30,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:30,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-01-10 06:56:30,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:56:30,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:30,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 15469413, now seen corresponding path program 1 times [2025-01-10 06:56:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392216388] [2025-01-10 06:56:30,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:30,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:30,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 06:56:30,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 06:56:30,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:30,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:30,438 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 06:56:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392216388] [2025-01-10 06:56:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392216388] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:30,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:56:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608830496] [2025-01-10 06:56:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:30,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:30,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:30,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:30,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2025-01-10 06:56:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 06:56:30,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:30,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2025-01-10 06:56:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:30,564 INFO L124 PetriNetUnfolderBase]: 265/461 cut-off events. [2025-01-10 06:56:30,564 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 06:56:30,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 461 events. 265/461 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1935 event pairs, 224 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 920. Up to 455 conditions per place. [2025-01-10 06:56:30,566 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2025-01-10 06:56:30,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 140 flow [2025-01-10 06:56:30,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-01-10 06:56:30,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2025-01-10 06:56:30,571 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 4 states and 50 transitions. [2025-01-10 06:56:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 140 flow [2025-01-10 06:56:30,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:30,573 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 89 flow [2025-01-10 06:56:30,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2025-01-10 06:56:30,575 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2025-01-10 06:56:30,575 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 89 flow [2025-01-10 06:56:30,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 06:56:30,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:30,576 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:56:30,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:56:30,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:30,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:30,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1288266551, now seen corresponding path program 1 times [2025-01-10 06:56:30,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:30,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263072219] [2025-01-10 06:56:30,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:30,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:30,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:30,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:30,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:30,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:30,643 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 06:56:30,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263072219] [2025-01-10 06:56:30,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263072219] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:30,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521496252] [2025-01-10 06:56:30,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:30,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:30,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:30,646 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 06:56:30,647 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 06:56:30,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:30,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:30,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:30,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:30,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:56:30,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:30,723 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 06:56:30,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:30,757 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 06:56:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521496252] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:30,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-01-10 06:56:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15546341] [2025-01-10 06:56:30,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:30,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:56:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:30,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:56:30,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:56:30,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2025-01-10 06:56:30,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 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 06:56:30,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:30,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2025-01-10 06:56:30,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:30,910 INFO L124 PetriNetUnfolderBase]: 268/473 cut-off events. [2025-01-10 06:56:30,910 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-01-10 06:56:30,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 473 events. 268/473 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2034 event pairs, 224 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 927. Up to 458 conditions per place. [2025-01-10 06:56:30,913 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 25 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2025-01-10 06:56:30,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 201 flow [2025-01-10 06:56:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:56:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:56:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2025-01-10 06:56:30,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.21666666666666667 [2025-01-10 06:56:30,915 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 89 flow. Second operand 10 states and 91 transitions. [2025-01-10 06:56:30,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 201 flow [2025-01-10 06:56:30,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:30,916 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 166 flow [2025-01-10 06:56:30,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2025-01-10 06:56:30,917 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2025-01-10 06:56:30,917 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 166 flow [2025-01-10 06:56:30,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 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 06:56:30,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:30,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:30,925 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 06:56:31,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:31,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:31,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1358412557, now seen corresponding path program 1 times [2025-01-10 06:56:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92266650] [2025-01-10 06:56:31,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:31,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:31,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:31,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:31,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:31,174 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 06:56:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:31,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92266650] [2025-01-10 06:56:31,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92266650] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:31,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:31,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:56:31,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959421452] [2025-01-10 06:56:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:31,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:56:31,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:31,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:56:31,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:56:31,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:31,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:31,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:31,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:31,294 INFO L124 PetriNetUnfolderBase]: 357/636 cut-off events. [2025-01-10 06:56:31,297 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-01-10 06:56:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 636 events. 357/636 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2849 event pairs, 149 based on Foata normal form. 15/450 useless extension candidates. Maximal degree in co-relation 1308. Up to 425 conditions per place. [2025-01-10 06:56:31,301 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 47 selfloop transitions, 2 changer transitions 3/56 dead transitions. [2025-01-10 06:56:31,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 303 flow [2025-01-10 06:56:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:56:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:56:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-01-10 06:56:31,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-01-10 06:56:31,305 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 166 flow. Second operand 3 states and 66 transitions. [2025-01-10 06:56:31,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 303 flow [2025-01-10 06:56:31,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 273 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:31,307 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 156 flow [2025-01-10 06:56:31,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2025-01-10 06:56:31,308 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2025-01-10 06:56:31,308 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 156 flow [2025-01-10 06:56:31,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:31,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:31,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:56:31,308 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:31,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1358412550, now seen corresponding path program 1 times [2025-01-10 06:56:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:31,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187088468] [2025-01-10 06:56:31,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:31,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:31,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:31,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:31,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:31,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:31,405 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 06:56:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187088468] [2025-01-10 06:56:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187088468] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:56:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515670413] [2025-01-10 06:56:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:56:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:31,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:56:31,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:56:31,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:31,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:31,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:31,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:31,561 INFO L124 PetriNetUnfolderBase]: 342/609 cut-off events. [2025-01-10 06:56:31,562 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-01-10 06:56:31,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 609 events. 342/609 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2698 event pairs, 134 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1377. Up to 425 conditions per place. [2025-01-10 06:56:31,567 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 46 selfloop transitions, 2 changer transitions 3/55 dead transitions. [2025-01-10 06:56:31,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 287 flow [2025-01-10 06:56:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:56:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:56:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2025-01-10 06:56:31,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2025-01-10 06:56:31,569 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 156 flow. Second operand 3 states and 61 transitions. [2025-01-10 06:56:31,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 287 flow [2025-01-10 06:56:31,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:31,571 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 162 flow [2025-01-10 06:56:31,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2025-01-10 06:56:31,573 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2025-01-10 06:56:31,575 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 162 flow [2025-01-10 06:56:31,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:31,576 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:31,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:56:31,576 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:31,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1358412551, now seen corresponding path program 1 times [2025-01-10 06:56:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451830529] [2025-01-10 06:56:31,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:31,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:56:31,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:56:31,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:31,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:31,624 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 06:56:31,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:31,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451830529] [2025-01-10 06:56:31,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451830529] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:31,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:31,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:56:31,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431789147] [2025-01-10 06:56:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:31,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:56:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:31,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:56:31,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:56:31,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:31,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:31,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:31,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:31,763 INFO L124 PetriNetUnfolderBase]: 327/582 cut-off events. [2025-01-10 06:56:31,764 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2025-01-10 06:56:31,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 582 events. 327/582 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2541 event pairs, 119 based on Foata normal form. 12/457 useless extension candidates. Maximal degree in co-relation 1352. Up to 425 conditions per place. [2025-01-10 06:56:31,768 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 45 selfloop transitions, 2 changer transitions 3/54 dead transitions. [2025-01-10 06:56:31,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 289 flow [2025-01-10 06:56:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:56:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:56:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-01-10 06:56:31,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-01-10 06:56:31,769 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 162 flow. Second operand 3 states and 60 transitions. [2025-01-10 06:56:31,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 289 flow [2025-01-10 06:56:31,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:31,776 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 166 flow [2025-01-10 06:56:31,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2025-01-10 06:56:31,777 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2025-01-10 06:56:31,777 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 166 flow [2025-01-10 06:56:31,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 06:56:31,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:31,778 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:31,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:56:31,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:31,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:31,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1287125201, now seen corresponding path program 1 times [2025-01-10 06:56:31,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:31,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130330752] [2025-01-10 06:56:31,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:31,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:31,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:31,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:31,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:31,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:31,838 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 06:56:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130330752] [2025-01-10 06:56:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130330752] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933189505] [2025-01-10 06:56:31,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:31,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:31,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:31,846 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 06:56:31,847 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 06:56:31,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:31,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:31,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:31,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:31,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:31,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:31,957 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 06:56:31,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:31,976 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 06:56:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933189505] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:31,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-01-10 06:56:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63668166] [2025-01-10 06:56:31,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 06:56:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:31,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 06:56:31,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-10 06:56:31,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:31,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 06:56:31,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:31,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:31,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:32,349 INFO L124 PetriNetUnfolderBase]: 851/1446 cut-off events. [2025-01-10 06:56:32,351 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-01-10 06:56:32,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1446 events. 851/1446 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6507 event pairs, 98 based on Foata normal form. 56/1202 useless extension candidates. Maximal degree in co-relation 3341. Up to 287 conditions per place. [2025-01-10 06:56:32,358 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 91 selfloop transitions, 16 changer transitions 18/129 dead transitions. [2025-01-10 06:56:32,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 129 transitions, 644 flow [2025-01-10 06:56:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-01-10 06:56:32,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2025-01-10 06:56:32,362 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 166 flow. Second operand 8 states and 188 transitions. [2025-01-10 06:56:32,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 129 transitions, 644 flow [2025-01-10 06:56:32,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 129 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:32,367 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 346 flow [2025-01-10 06:56:32,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2025-01-10 06:56:32,368 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2025-01-10 06:56:32,368 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 346 flow [2025-01-10 06:56:32,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 06:56:32,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:32,370 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:32,377 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 06:56:32,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:32,571 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:32,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1287125200, now seen corresponding path program 1 times [2025-01-10 06:56:32,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:32,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446180382] [2025-01-10 06:56:32,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:32,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:32,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:32,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:32,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:32,646 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 06:56:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446180382] [2025-01-10 06:56:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446180382] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951722956] [2025-01-10 06:56:32,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:32,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:32,653 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 06:56:32,656 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 06:56:32,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:56:32,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:56:32,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:32,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:32,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:32,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:32,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:56:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951722956] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:32,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:56:32,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-01-10 06:56:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060133603] [2025-01-10 06:56:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:32,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:32,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:32,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:32,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-10 06:56:32,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:32,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 06:56:32,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:32,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:32,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:32,928 INFO L124 PetriNetUnfolderBase]: 947/1600 cut-off events. [2025-01-10 06:56:32,929 INFO L125 PetriNetUnfolderBase]: For 2856/2856 co-relation queries the response was YES. [2025-01-10 06:56:32,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4591 conditions, 1600 events. 947/1600 cut-off events. For 2856/2856 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7245 event pairs, 296 based on Foata normal form. 144/1490 useless extension candidates. Maximal degree in co-relation 4551. Up to 951 conditions per place. [2025-01-10 06:56:32,936 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2025-01-10 06:56:32,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 537 flow [2025-01-10 06:56:32,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2025-01-10 06:56:32,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2025-01-10 06:56:32,937 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 346 flow. Second operand 4 states and 73 transitions. [2025-01-10 06:56:32,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 537 flow [2025-01-10 06:56:32,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 512 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:32,943 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 404 flow [2025-01-10 06:56:32,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2025-01-10 06:56:32,943 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2025-01-10 06:56:32,943 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 404 flow [2025-01-10 06:56:32,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 06:56:32,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:32,945 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2025-01-10 06:56:32,951 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 06:56:33,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:33,149 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:33,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash -720474419, now seen corresponding path program 1 times [2025-01-10 06:56:33,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:33,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119135818] [2025-01-10 06:56:33,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:33,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:33,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:33,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:33,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:33,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:33,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:33,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119135818] [2025-01-10 06:56:33,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119135818] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:33,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409051257] [2025-01-10 06:56:33,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:33,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:33,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:33,248 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 06:56:33,249 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 06:56:33,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:56:33,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:56:33,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:33,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:33,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:56:33,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:33,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:33,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409051257] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:33,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-01-10 06:56:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582305536] [2025-01-10 06:56:33,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:33,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 06:56:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:33,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 06:56:33,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:56:33,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:33,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 06:56:33,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:33,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:33,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:33,734 INFO L124 PetriNetUnfolderBase]: 2608/4412 cut-off events. [2025-01-10 06:56:33,734 INFO L125 PetriNetUnfolderBase]: For 12773/12773 co-relation queries the response was YES. [2025-01-10 06:56:33,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13403 conditions, 4412 events. 2608/4412 cut-off events. For 12773/12773 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 23761 event pairs, 704 based on Foata normal form. 240/3990 useless extension candidates. Maximal degree in co-relation 13361. Up to 868 conditions per place. [2025-01-10 06:56:33,751 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 130 selfloop transitions, 34 changer transitions 3/171 dead transitions. [2025-01-10 06:56:33,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 171 transitions, 1385 flow [2025-01-10 06:56:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:56:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:56:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2025-01-10 06:56:33,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2025-01-10 06:56:33,752 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 404 flow. Second operand 8 states and 187 transitions. [2025-01-10 06:56:33,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 171 transitions, 1385 flow [2025-01-10 06:56:33,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 171 transitions, 1340 flow, removed 22 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:33,761 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 821 flow [2025-01-10 06:56:33,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=821, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2025-01-10 06:56:33,762 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2025-01-10 06:56:33,762 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 821 flow [2025-01-10 06:56:33,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 06:56:33,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:33,762 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:56:33,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 06:56:33,966 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,SelfDestructingSolverStorable8 [2025-01-10 06:56:33,966 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:33,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1421334299, now seen corresponding path program 2 times [2025-01-10 06:56:33,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:33,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361303797] [2025-01-10 06:56:33,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:33,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:33,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:56:33,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:56:33,976 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:33,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:34,013 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 06:56:34,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361303797] [2025-01-10 06:56:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361303797] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811233247] [2025-01-10 06:56:34,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:34,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:34,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:34,016 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 06:56:34,019 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 06:56:34,062 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:56:34,072 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:56:34,073 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:34,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:34,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:56:34,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:34,104 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 06:56:34,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:34,128 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 06:56:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811233247] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:34,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:56:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978562846] [2025-01-10 06:56:34,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:34,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:34,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:34,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:34,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2025-01-10 06:56:34,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 821 flow. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 06:56:34,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:34,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2025-01-10 06:56:34,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:34,669 INFO L124 PetriNetUnfolderBase]: 2608/4411 cut-off events. [2025-01-10 06:56:34,670 INFO L125 PetriNetUnfolderBase]: For 16945/16945 co-relation queries the response was YES. [2025-01-10 06:56:34,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14589 conditions, 4411 events. 2608/4411 cut-off events. For 16945/16945 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 25043 event pairs, 2233 based on Foata normal form. 1/3788 useless extension candidates. Maximal degree in co-relation 14546. Up to 4393 conditions per place. [2025-01-10 06:56:34,697 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 63 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2025-01-10 06:56:34,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 969 flow [2025-01-10 06:56:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-01-10 06:56:34,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2619047619047619 [2025-01-10 06:56:34,699 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 821 flow. Second operand 4 states and 44 transitions. [2025-01-10 06:56:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 969 flow [2025-01-10 06:56:34,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 959 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:34,723 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 833 flow [2025-01-10 06:56:34,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2025-01-10 06:56:34,724 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2025-01-10 06:56:34,725 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 833 flow [2025-01-10 06:56:34,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 06:56:34,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:34,725 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:34,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 06:56:34,926 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 06:56:34,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:34,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1605403191, now seen corresponding path program 1 times [2025-01-10 06:56:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854815934] [2025-01-10 06:56:34,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:34,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:56:34,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:56:34,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:34,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 06:56:35,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:35,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854815934] [2025-01-10 06:56:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854815934] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:35,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:35,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432021603] [2025-01-10 06:56:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:35,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:35,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:35,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:35,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:35,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 06:56:35,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:35,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:35,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:35,843 INFO L124 PetriNetUnfolderBase]: 2675/4547 cut-off events. [2025-01-10 06:56:35,844 INFO L125 PetriNetUnfolderBase]: For 17174/17174 co-relation queries the response was YES. [2025-01-10 06:56:35,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14877 conditions, 4547 events. 2675/4547 cut-off events. For 17174/17174 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 25552 event pairs, 2301 based on Foata normal form. 12/3908 useless extension candidates. Maximal degree in co-relation 14504. Up to 4401 conditions per place. [2025-01-10 06:56:35,866 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 76 selfloop transitions, 2 changer transitions 14/95 dead transitions. [2025-01-10 06:56:35,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 95 transitions, 1047 flow [2025-01-10 06:56:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-01-10 06:56:35,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-01-10 06:56:35,867 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 833 flow. Second operand 4 states and 68 transitions. [2025-01-10 06:56:35,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 95 transitions, 1047 flow [2025-01-10 06:56:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 1015 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:35,881 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 803 flow [2025-01-10 06:56:35,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=803, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2025-01-10 06:56:35,883 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2025-01-10 06:56:35,883 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 803 flow [2025-01-10 06:56:35,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 06:56:35,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:35,883 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:35,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 06:56:35,884 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:35,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 736707867, now seen corresponding path program 1 times [2025-01-10 06:56:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291080704] [2025-01-10 06:56:35,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:35,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 06:56:35,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:56:35,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:35,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:36,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291080704] [2025-01-10 06:56:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291080704] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:36,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516309785] [2025-01-10 06:56:36,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:36,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:36,155 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 06:56:36,157 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 06:56:36,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-10 06:56:36,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-10 06:56:36,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:36,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:36,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 06:56:36,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:36,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516309785] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:36,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 13 [2025-01-10 06:56:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280141854] [2025-01-10 06:56:36,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:36,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 06:56:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:36,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 06:56:36,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=109, Unknown=0, NotChecked=0, Total=210 [2025-01-10 06:56:36,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:36,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 803 flow. Second operand has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 06:56:36,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:36,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:36,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:37,428 INFO L124 PetriNetUnfolderBase]: 6725/11377 cut-off events. [2025-01-10 06:56:37,428 INFO L125 PetriNetUnfolderBase]: For 56634/56634 co-relation queries the response was YES. [2025-01-10 06:56:37,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35081 conditions, 11377 events. 6725/11377 cut-off events. For 56634/56634 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 66249 event pairs, 1815 based on Foata normal form. 871/10542 useless extension candidates. Maximal degree in co-relation 35044. Up to 2459 conditions per place. [2025-01-10 06:56:37,468 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 205 selfloop transitions, 74 changer transitions 36/318 dead transitions. [2025-01-10 06:56:37,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 318 transitions, 3124 flow [2025-01-10 06:56:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 06:56:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 06:56:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 295 transitions. [2025-01-10 06:56:37,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5017006802721088 [2025-01-10 06:56:37,471 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 803 flow. Second operand 14 states and 295 transitions. [2025-01-10 06:56:37,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 318 transitions, 3124 flow [2025-01-10 06:56:37,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 318 transitions, 3118 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:37,499 INFO L231 Difference]: Finished difference. Result has 88 places, 138 transitions, 1851 flow [2025-01-10 06:56:37,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1851, PETRI_PLACES=88, PETRI_TRANSITIONS=138} [2025-01-10 06:56:37,501 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2025-01-10 06:56:37,501 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 138 transitions, 1851 flow [2025-01-10 06:56:37,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 06:56:37,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:37,502 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:37,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:56:37,702 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,SelfDestructingSolverStorable11 [2025-01-10 06:56:37,702 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:37,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash 671647163, now seen corresponding path program 1 times [2025-01-10 06:56:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173334292] [2025-01-10 06:56:37,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:37,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 06:56:37,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 06:56:37,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:37,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:37,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173334292] [2025-01-10 06:56:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173334292] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93264395] [2025-01-10 06:56:37,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:37,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:37,832 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 06:56:37,836 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 06:56:37,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 06:56:37,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 06:56:37,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:37,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:37,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:56:37,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:37,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93264395] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:38,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-01-10 06:56:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074213096] [2025-01-10 06:56:38,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:38,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 06:56:38,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:38,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 06:56:38,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-10 06:56:38,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:38,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 138 transitions, 1851 flow. Second operand has 17 states, 17 states have (on average 10.529411764705882) internal successors, (179), 17 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:38,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:38,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:38,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:40,749 INFO L124 PetriNetUnfolderBase]: 16970/28681 cut-off events. [2025-01-10 06:56:40,749 INFO L125 PetriNetUnfolderBase]: For 232302/232302 co-relation queries the response was YES. [2025-01-10 06:56:40,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99402 conditions, 28681 events. 16970/28681 cut-off events. For 232302/232302 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 199157 event pairs, 4771 based on Foata normal form. 1189/25604 useless extension candidates. Maximal degree in co-relation 99319. Up to 5529 conditions per place. [2025-01-10 06:56:40,996 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 249 selfloop transitions, 245 changer transitions 3/500 dead transitions. [2025-01-10 06:56:40,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 500 transitions, 6521 flow [2025-01-10 06:56:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-10 06:56:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-10 06:56:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 387 transitions. [2025-01-10 06:56:40,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5758928571428571 [2025-01-10 06:56:40,998 INFO L175 Difference]: Start difference. First operand has 88 places, 138 transitions, 1851 flow. Second operand 16 states and 387 transitions. [2025-01-10 06:56:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 500 transitions, 6521 flow [2025-01-10 06:56:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 500 transitions, 6453 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:41,393 INFO L231 Difference]: Finished difference. Result has 113 places, 294 transitions, 5172 flow [2025-01-10 06:56:41,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5172, PETRI_PLACES=113, PETRI_TRANSITIONS=294} [2025-01-10 06:56:41,394 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2025-01-10 06:56:41,394 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 294 transitions, 5172 flow [2025-01-10 06:56:41,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.529411764705882) internal successors, (179), 17 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:41,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:41,395 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:41,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:41,595 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 06:56:41,596 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:41,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:41,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1786449510, now seen corresponding path program 1 times [2025-01-10 06:56:41,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26593453] [2025-01-10 06:56:41,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:41,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-10 06:56:41,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 06:56:41,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-10 06:56:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26593453] [2025-01-10 06:56:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26593453] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986344095] [2025-01-10 06:56:41,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:41,730 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 06:56:41,731 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 06:56:41,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-01-10 06:56:41,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 06:56:41,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:41,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:41,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:56:41,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-10 06:56:41,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-10 06:56:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986344095] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:42,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:42,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2025-01-10 06:56:42,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380861669] [2025-01-10 06:56:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:42,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 06:56:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:42,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 06:56:42,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-01-10 06:56:42,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2025-01-10 06:56:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 294 transitions, 5172 flow. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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 06:56:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2025-01-10 06:56:42,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:46,943 INFO L124 PetriNetUnfolderBase]: 21979/37424 cut-off events. [2025-01-10 06:56:46,943 INFO L125 PetriNetUnfolderBase]: For 308858/308858 co-relation queries the response was YES. [2025-01-10 06:56:47,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135907 conditions, 37424 events. 21979/37424 cut-off events. For 308858/308858 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 276790 event pairs, 9336 based on Foata normal form. 610/32402 useless extension candidates. Maximal degree in co-relation 128220. Up to 24364 conditions per place. [2025-01-10 06:56:47,342 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 357 selfloop transitions, 75 changer transitions 11/446 dead transitions. [2025-01-10 06:56:47,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 446 transitions, 8148 flow [2025-01-10 06:56:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:56:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:56:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2025-01-10 06:56:47,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33095238095238094 [2025-01-10 06:56:47,344 INFO L175 Difference]: Start difference. First operand has 113 places, 294 transitions, 5172 flow. Second operand 10 states and 139 transitions. [2025-01-10 06:56:47,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 446 transitions, 8148 flow [2025-01-10 06:56:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 446 transitions, 7690 flow, removed 211 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:47,857 INFO L231 Difference]: Finished difference. Result has 124 places, 339 transitions, 6141 flow [2025-01-10 06:56:47,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6141, PETRI_PLACES=124, PETRI_TRANSITIONS=339} [2025-01-10 06:56:47,859 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2025-01-10 06:56:47,859 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 339 transitions, 6141 flow [2025-01-10 06:56:47,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 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 06:56:47,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:47,859 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:47,867 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 06:56:48,064 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 06:56:48,065 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:56:48,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1935147779, now seen corresponding path program 2 times [2025-01-10 06:56:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:48,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993607841] [2025-01-10 06:56:48,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:48,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:48,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-01-10 06:56:48,293 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 06:56:48,293 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:48,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:48,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993607841] [2025-01-10 06:56:48,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993607841] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:48,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190851953] [2025-01-10 06:56:48,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:48,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:48,604 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 06:56:48,605 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 06:56:48,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-01-10 06:56:48,674 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-01-10 06:56:48,674 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:56:48,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:48,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 06:56:48,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:48,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190851953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:48,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 28 [2025-01-10 06:56:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82600441] [2025-01-10 06:56:48,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:48,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-10 06:56:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:48,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-10 06:56:48,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=470, Unknown=0, NotChecked=0, Total=870 [2025-01-10 06:56:48,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:56:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 339 transitions, 6141 flow. Second operand has 30 states, 30 states have (on average 10.7) internal successors, (321), 30 states have internal predecessors, (321), 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 06:56:48,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:48,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:56:48,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:57:05,200 INFO L124 PetriNetUnfolderBase]: 61162/103819 cut-off events. [2025-01-10 06:57:05,200 INFO L125 PetriNetUnfolderBase]: For 1481222/1481222 co-relation queries the response was YES. [2025-01-10 06:57:06,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353527 conditions, 103819 events. 61162/103819 cut-off events. For 1481222/1481222 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 778794 event pairs, 15299 based on Foata normal form. 9319/97128 useless extension candidates. Maximal degree in co-relation 329085. Up to 19234 conditions per place. [2025-01-10 06:57:06,293 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 960 selfloop transitions, 644 changer transitions 114/1721 dead transitions. [2025-01-10 06:57:06,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1721 transitions, 28849 flow [2025-01-10 06:57:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-10 06:57:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-01-10 06:57:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 821 transitions. [2025-01-10 06:57:06,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4886904761904762 [2025-01-10 06:57:06,298 INFO L175 Difference]: Start difference. First operand has 124 places, 339 transitions, 6141 flow. Second operand 40 states and 821 transitions. [2025-01-10 06:57:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1721 transitions, 28849 flow [2025-01-10 06:57:07,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1721 transitions, 28842 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:57:07,979 INFO L231 Difference]: Finished difference. Result has 176 places, 816 transitions, 16293 flow [2025-01-10 06:57:07,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=16293, PETRI_PLACES=176, PETRI_TRANSITIONS=816} [2025-01-10 06:57:07,980 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2025-01-10 06:57:07,980 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 816 transitions, 16293 flow [2025-01-10 06:57:07,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.7) internal successors, (321), 30 states have internal predecessors, (321), 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 06:57:07,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:57:07,980 INFO L206 CegarLoopForPetriNet]: trace histogram [15, 15, 14, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:57:07,986 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 06:57:08,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:57:08,185 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2025-01-10 06:57:08,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:57:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 890926733, now seen corresponding path program 2 times [2025-01-10 06:57:08,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:57:08,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399088269] [2025-01-10 06:57:08,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:57:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:57:08,202 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-01-10 06:57:08,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 55 statements. [2025-01-10 06:57:08,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:57:08,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:57:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2025-01-10 06:57:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:57:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399088269] [2025-01-10 06:57:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399088269] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:57:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:57:08,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:57:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828111921] [2025-01-10 06:57:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:57:08,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:57:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:57:08,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:57:08,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:57:08,246 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2025-01-10 06:57:08,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 816 transitions, 16293 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 06:57:08,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:57:08,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2025-01-10 06:57:08,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand