./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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/loop-tiling-eq.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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:49:47,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:49:48,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:49:48,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:49:48,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:49:48,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:49:48,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:49:48,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:49:48,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:49:48,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:49:48,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:49:48,046 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:49:48,047 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:49:48,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:49:48,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:49:48,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:49:48,048 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 -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2025-02-06 18:49:48,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:49:48,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:49:48,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:49:48,379 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:49:48,379 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:49:48,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2025-02-06 18:49:49,612 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0777526e3/2bc934c04bf3489080dea0c4491d9609/FLAG186fecb6a [2025-02-06 18:49:49,922 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:49:49,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2025-02-06 18:49:49,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0777526e3/2bc934c04bf3489080dea0c4491d9609/FLAG186fecb6a [2025-02-06 18:49:49,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0777526e3/2bc934c04bf3489080dea0c4491d9609 [2025-02-06 18:49:49,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:49:49,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:49:49,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:49:49,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:49:49,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:49:49,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:49:49" (1/1) ... [2025-02-06 18:49:49,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bee783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:49, skipping insertion in model container [2025-02-06 18:49:49,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:49:49" (1/1) ... [2025-02-06 18:49:49,982 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:49:50,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:49:50,173 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:49:50,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:49:50,214 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:49:50,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50 WrapperNode [2025-02-06 18:49:50,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:49:50,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:49:50,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:49:50,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:49:50,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,262 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 194 [2025-02-06 18:49:50,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:49:50,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:49:50,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:49:50,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:49:50,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,277 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,313 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 3, 9]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 1, 5]. [2025-02-06 18:49:50,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,323 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:49:50,331 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:49:50,331 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:49:50,331 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:49:50,332 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (1/1) ... [2025-02-06 18:49:50,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:49:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:50,362 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) [2025-02-06 18:49:50,364 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 [2025-02-06 18:49:50,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 18:49:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 18:49:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 18:49:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:49:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:49:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:49:50,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:49:50,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:49:50,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:49:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:49:50,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:49:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:49:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:49:50,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:49:50,390 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:49:50,499 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:49:50,502 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:49:50,894 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:49:50,895 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:49:51,156 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:49:51,157 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:49:51,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:49:51 BoogieIcfgContainer [2025-02-06 18:49:51,157 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:49:51,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:49:51,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:49:51,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:49:51,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:49:49" (1/3) ... [2025-02-06 18:49:51,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cfe6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:49:51, skipping insertion in model container [2025-02-06 18:49:51,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:49:50" (2/3) ... [2025-02-06 18:49:51,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cfe6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:49:51, skipping insertion in model container [2025-02-06 18:49:51,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:49:51" (3/3) ... [2025-02-06 18:49:51,168 INFO L128 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2025-02-06 18:49:51,185 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:49:51,187 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG loop-tiling-eq.wvr.c that has 3 procedures, 74 locations, 1 initial locations, 7 loop locations, and 26 error locations. [2025-02-06 18:49:51,187 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:49:51,243 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 18:49:51,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 176 flow [2025-02-06 18:49:51,307 INFO L124 PetriNetUnfolderBase]: 8/79 cut-off events. [2025-02-06 18:49:51,309 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:49:51,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 8/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2025-02-06 18:49:51,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 176 flow [2025-02-06 18:49:51,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 78 transitions, 168 flow [2025-02-06 18:49:51,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:49:51,334 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;@18a8b5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:49:51,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2025-02-06 18:49:51,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:49:51,338 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2025-02-06 18:49:51,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:49:51,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:51,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:49:51,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:51,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 673997, now seen corresponding path program 1 times [2025-02-06 18:49:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885790483] [2025-02-06 18:49:51,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:51,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:49:51,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:49:51,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:51,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 18:49:51,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208287284] [2025-02-06 18:49:51,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:51,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:51,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:51,445 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) [2025-02-06 18:49:51,446 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 [2025-02-06 18:49:51,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:49:51,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:49:51,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:51,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:51,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:51,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:51,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885790483] [2025-02-06 18:49:51,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 18:49:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208287284] [2025-02-06 18:49:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208287284] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:51,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:51,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:49:51,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128437181] [2025-02-06 18:49:51,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:51,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:51,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:51,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:51,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2025-02-06 18:49:51,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-02-06 18:49:51,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:51,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2025-02-06 18:49:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:52,028 INFO L124 PetriNetUnfolderBase]: 226/661 cut-off events. [2025-02-06 18:49:52,028 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2025-02-06 18:49:52,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 661 events. 226/661 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3889 event pairs, 150 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 446. Up to 199 conditions per place. [2025-02-06 18:49:52,036 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2025-02-06 18:49:52,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 392 flow [2025-02-06 18:49:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2025-02-06 18:49:52,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2025-02-06 18:49:52,058 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 168 flow. Second operand 5 states and 275 transitions. [2025-02-06 18:49:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 392 flow [2025-02-06 18:49:52,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:49:52,073 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 171 flow [2025-02-06 18:49:52,075 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2025-02-06 18:49:52,077 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2025-02-06 18:49:52,077 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 171 flow [2025-02-06 18:49:52,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-02-06 18:49:52,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:52,078 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 18:49:52,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:49:52,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 18:49:52,279 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:52,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 20895268, now seen corresponding path program 1 times [2025-02-06 18:49:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685446831] [2025-02-06 18:49:52,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:52,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:49:52,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:49:52,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 18:49:52,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280709694] [2025-02-06 18:49:52,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:52,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:52,291 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) [2025-02-06 18:49:52,292 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 [2025-02-06 18:49:52,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:49:52,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:49:52,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:52,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:49:52,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:52,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:52,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685446831] [2025-02-06 18:49:52,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 18:49:52,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280709694] [2025-02-06 18:49:52,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280709694] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:52,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:52,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:49:52,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460314340] [2025-02-06 18:49:52,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:52,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:52,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:52,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:52,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2025-02-06 18:49:52,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:52,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:52,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2025-02-06 18:49:52,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:52,589 INFO L124 PetriNetUnfolderBase]: 226/651 cut-off events. [2025-02-06 18:49:52,589 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-02-06 18:49:52,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 651 events. 226/651 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3835 event pairs, 150 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 532. Up to 200 conditions per place. [2025-02-06 18:49:52,593 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 65 selfloop transitions, 4 changer transitions 1/108 dead transitions. [2025-02-06 18:49:52,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 377 flow [2025-02-06 18:49:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 273 transitions. [2025-02-06 18:49:52,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2025-02-06 18:49:52,595 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 171 flow. Second operand 5 states and 273 transitions. [2025-02-06 18:49:52,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 377 flow [2025-02-06 18:49:52,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:52,597 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 182 flow [2025-02-06 18:49:52,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2025-02-06 18:49:52,597 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2025-02-06 18:49:52,597 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 182 flow [2025-02-06 18:49:52,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:52,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:52,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:49:52,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:52,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:52,798 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:52,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1395228462, now seen corresponding path program 1 times [2025-02-06 18:49:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212433031] [2025-02-06 18:49:52,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:52,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:49:52,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:49:52,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 18:49:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551563904] [2025-02-06 18:49:52,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:52,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:52,817 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) [2025-02-06 18:49:52,818 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 [2025-02-06 18:49:52,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:49:52,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:49:52,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:52,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:52,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:49:52,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:52,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:52,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:52,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212433031] [2025-02-06 18:49:52,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 18:49:52,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551563904] [2025-02-06 18:49:52,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551563904] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:52,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:52,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:49:52,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021644681] [2025-02-06 18:49:52,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:52,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:52,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:52,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:52,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:53,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2025-02-06 18:49:53,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2025-02-06 18:49:53,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:53,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2025-02-06 18:49:53,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:53,236 INFO L124 PetriNetUnfolderBase]: 226/650 cut-off events. [2025-02-06 18:49:53,236 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:49:53,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 650 events. 226/650 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3811 event pairs, 150 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 533. Up to 198 conditions per place. [2025-02-06 18:49:53,239 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 64 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2025-02-06 18:49:53,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 107 transitions, 382 flow [2025-02-06 18:49:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2025-02-06 18:49:53,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:49:53,241 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 182 flow. Second operand 5 states and 270 transitions. [2025-02-06 18:49:53,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 107 transitions, 382 flow [2025-02-06 18:49:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:49:53,243 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 178 flow [2025-02-06 18:49:53,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2025-02-06 18:49:53,243 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2025-02-06 18:49:53,243 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 178 flow [2025-02-06 18:49:53,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2025-02-06 18:49:53,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:53,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:53,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:49:53,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:53,444 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:53,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash -302408735, now seen corresponding path program 1 times [2025-02-06 18:49:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140322089] [2025-02-06 18:49:53,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:53,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:49:53,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:49:53,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:53,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 18:49:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240864650] [2025-02-06 18:49:53,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:53,474 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) [2025-02-06 18:49:53,475 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 [2025-02-06 18:49:53,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:49:53,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:49:53,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:53,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:53,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:49:53,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:53,631 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:53,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140322089] [2025-02-06 18:49:53,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 18:49:53,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240864650] [2025-02-06 18:49:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240864650] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:53,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636657564] [2025-02-06 18:49:53,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:53,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:49:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:53,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:49:53,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:49:53,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:49:53,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2025-02-06 18:49:53,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:53,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:49:53,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:54,033 INFO L124 PetriNetUnfolderBase]: 226/649 cut-off events. [2025-02-06 18:49:54,033 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-02-06 18:49:54,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 649 events. 226/649 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3812 event pairs, 150 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 534. Up to 196 conditions per place. [2025-02-06 18:49:54,037 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 63 selfloop transitions, 5 changer transitions 1/106 dead transitions. [2025-02-06 18:49:54,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 378 flow [2025-02-06 18:49:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:49:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:49:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2025-02-06 18:49:54,040 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6255144032921811 [2025-02-06 18:49:54,040 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 178 flow. Second operand 6 states and 304 transitions. [2025-02-06 18:49:54,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 378 flow [2025-02-06 18:49:54,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:49:54,043 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 177 flow [2025-02-06 18:49:54,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2025-02-06 18:49:54,043 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2025-02-06 18:49:54,043 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 177 flow [2025-02-06 18:49:54,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2025-02-06 18:49:54,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:54,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:54,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:54,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:54,246 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:54,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:54,246 INFO L85 PathProgramCache]: Analyzing trace with hash -278705705, now seen corresponding path program 1 times [2025-02-06 18:49:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:54,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-02-06 18:49:54,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:54,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:49:54,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:49:54,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:54,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:54,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863996777] [2025-02-06 18:49:54,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863996777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:54,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:54,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:54,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73064787] [2025-02-06 18:49:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:54,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:54,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:54,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:54,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:54,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:49:54,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2025-02-06 18:49:54,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:54,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:49:54,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:54,647 INFO L124 PetriNetUnfolderBase]: 232/673 cut-off events. [2025-02-06 18:49:54,647 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2025-02-06 18:49:54,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 673 events. 232/673 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4010 event pairs, 150 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 561. Up to 410 conditions per place. [2025-02-06 18:49:54,652 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 40 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2025-02-06 18:49:54,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 297 flow [2025-02-06 18:49:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2025-02-06 18:49:54,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2025-02-06 18:49:54,654 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 177 flow. Second operand 4 states and 212 transitions. [2025-02-06 18:49:54,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 297 flow [2025-02-06 18:49:54,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 281 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-06 18:49:54,657 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 253 flow [2025-02-06 18:49:54,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2025-02-06 18:49:54,658 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2025-02-06 18:49:54,658 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 253 flow [2025-02-06 18:49:54,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2025-02-06 18:49:54,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:54,659 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:54,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:49:54,659 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:54,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash -749253182, now seen corresponding path program 1 times [2025-02-06 18:49:54,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:54,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933898611] [2025-02-06 18:49:54,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:54,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:49:54,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:49:54,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:54,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933898611] [2025-02-06 18:49:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933898611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501910275] [2025-02-06 18:49:54,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:54,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:54,798 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) [2025-02-06 18:49:54,806 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 [2025-02-06 18:49:54,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:49:54,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:49:54,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:54,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:54,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:54,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:54,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501910275] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:49:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:49:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325003691] [2025-02-06 18:49:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:54,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:49:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:54,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:49:54,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:49:54,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:49:54,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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) [2025-02-06 18:49:54,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:54,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:49:54,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:55,095 INFO L124 PetriNetUnfolderBase]: 232/667 cut-off events. [2025-02-06 18:49:55,096 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-02-06 18:49:55,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 667 events. 232/667 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3938 event pairs, 150 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 1033. Up to 380 conditions per place. [2025-02-06 18:49:55,099 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 29 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2025-02-06 18:49:55,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 337 flow [2025-02-06 18:49:55,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:49:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:49:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2025-02-06 18:49:55,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2025-02-06 18:49:55,102 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 253 flow. Second operand 6 states and 284 transitions. [2025-02-06 18:49:55,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 337 flow [2025-02-06 18:49:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:49:55,108 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 279 flow [2025-02-06 18:49:55,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2025-02-06 18:49:55,108 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2025-02-06 18:49:55,108 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 279 flow [2025-02-06 18:49:55,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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) [2025-02-06 18:49:55,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:55,109 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:55,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:55,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:55,310 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash -747522638, now seen corresponding path program 1 times [2025-02-06 18:49:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:55,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146258668] [2025-02-06 18:49:55,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:55,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:55,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:49:55,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:49:55,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:55,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:55,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146258668] [2025-02-06 18:49:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146258668] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885240695] [2025-02-06 18:49:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:55,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:55,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:55,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:55,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:55,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2025-02-06 18:49:55,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 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) [2025-02-06 18:49:55,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:55,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2025-02-06 18:49:55,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:55,697 INFO L124 PetriNetUnfolderBase]: 229/653 cut-off events. [2025-02-06 18:49:55,697 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-02-06 18:49:55,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 653 events. 229/653 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3849 event pairs, 150 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 1028. Up to 207 conditions per place. [2025-02-06 18:49:55,700 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 72 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2025-02-06 18:49:55,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 569 flow [2025-02-06 18:49:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2025-02-06 18:49:55,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 18:49:55,701 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 279 flow. Second operand 5 states and 270 transitions. [2025-02-06 18:49:55,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 569 flow [2025-02-06 18:49:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 495 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 18:49:55,705 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 269 flow [2025-02-06 18:49:55,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2025-02-06 18:49:55,706 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2025-02-06 18:49:55,707 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 269 flow [2025-02-06 18:49:55,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 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) [2025-02-06 18:49:55,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:55,708 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:49:55,708 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1752011537, now seen corresponding path program 1 times [2025-02-06 18:49:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376904304] [2025-02-06 18:49:55,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:55,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:49:55,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:49:55,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:55,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376904304] [2025-02-06 18:49:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376904304] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031724650] [2025-02-06 18:49:55,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:55,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:55,797 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) [2025-02-06 18:49:55,799 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 [2025-02-06 18:49:55,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:49:55,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:49:55,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:55,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:55,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:55,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031724650] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:55,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:55,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:49:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221403480] [2025-02-06 18:49:55,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:55,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:49:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:55,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:49:55,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:49:55,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:49:55,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 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) [2025-02-06 18:49:55,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:55,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:49:55,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:56,099 INFO L124 PetriNetUnfolderBase]: 244/713 cut-off events. [2025-02-06 18:49:56,099 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2025-02-06 18:49:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 713 events. 244/713 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4402 event pairs, 150 based on Foata normal form. 15/551 useless extension candidates. Maximal degree in co-relation 1024. Up to 406 conditions per place. [2025-02-06 18:49:56,102 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 39 selfloop transitions, 42 changer transitions 0/114 dead transitions. [2025-02-06 18:49:56,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 581 flow [2025-02-06 18:49:56,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:49:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:49:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2025-02-06 18:49:56,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5839506172839506 [2025-02-06 18:49:56,104 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 269 flow. Second operand 10 states and 473 transitions. [2025-02-06 18:49:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 581 flow [2025-02-06 18:49:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:56,109 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 552 flow [2025-02-06 18:49:56,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=552, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2025-02-06 18:49:56,110 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2025-02-06 18:49:56,110 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 552 flow [2025-02-06 18:49:56,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 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) [2025-02-06 18:49:56,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:56,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:56,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:56,313 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,SelfDestructingSolverStorable7 [2025-02-06 18:49:56,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:56,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash 161359328, now seen corresponding path program 1 times [2025-02-06 18:49:56,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:56,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359105176] [2025-02-06 18:49:56,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:56,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:49:56,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:49:56,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:56,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359105176] [2025-02-06 18:49:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359105176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:56,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:56,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:56,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686494394] [2025-02-06 18:49:56,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:56,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:56,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:56,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:56,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:56,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:49:56,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 552 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-02-06 18:49:56,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:56,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:49:56,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:56,495 INFO L124 PetriNetUnfolderBase]: 250/738 cut-off events. [2025-02-06 18:49:56,495 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2025-02-06 18:49:56,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 738 events. 250/738 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4602 event pairs, 150 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 1312. Up to 443 conditions per place. [2025-02-06 18:49:56,498 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 80 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2025-02-06 18:49:56,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 132 transitions, 865 flow [2025-02-06 18:49:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2025-02-06 18:49:56,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2025-02-06 18:49:56,499 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 552 flow. Second operand 4 states and 217 transitions. [2025-02-06 18:49:56,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 132 transitions, 865 flow [2025-02-06 18:49:56,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 818 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:56,503 INFO L231 Difference]: Finished difference. Result has 97 places, 121 transitions, 624 flow [2025-02-06 18:49:56,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2025-02-06 18:49:56,504 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2025-02-06 18:49:56,504 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 624 flow [2025-02-06 18:49:56,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-02-06 18:49:56,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:56,504 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:56,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:49:56,504 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:56,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1107832793, now seen corresponding path program 1 times [2025-02-06 18:49:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:56,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097087433] [2025-02-06 18:49:56,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:56,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:49:56,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:49:56,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:56,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097087433] [2025-02-06 18:49:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097087433] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:56,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:56,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:49:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664175852] [2025-02-06 18:49:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:56,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:49:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:56,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:49:56,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:49:56,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:49:56,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:56,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:56,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:49:56,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:56,797 INFO L124 PetriNetUnfolderBase]: 482/1166 cut-off events. [2025-02-06 18:49:56,797 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2025-02-06 18:49:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 1166 events. 482/1166 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7324 event pairs, 218 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 2165. Up to 663 conditions per place. [2025-02-06 18:49:56,802 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 108 selfloop transitions, 4 changer transitions 0/146 dead transitions. [2025-02-06 18:49:56,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 900 flow [2025-02-06 18:49:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:49:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:49:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-02-06 18:49:56,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2025-02-06 18:49:56,804 INFO L175 Difference]: Start difference. First operand has 97 places, 121 transitions, 624 flow. Second operand 4 states and 236 transitions. [2025-02-06 18:49:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 900 flow [2025-02-06 18:49:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:56,807 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 640 flow [2025-02-06 18:49:56,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=640, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2025-02-06 18:49:56,808 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2025-02-06 18:49:56,808 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 640 flow [2025-02-06 18:49:56,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:49:56,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:56,808 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:56,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:49:56,808 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:56,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -917392479, now seen corresponding path program 1 times [2025-02-06 18:49:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:56,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763219444] [2025-02-06 18:49:56,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:56,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:49:56,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:49:56,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:56,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:49:56,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:56,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763219444] [2025-02-06 18:49:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763219444] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:56,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:49:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210760876] [2025-02-06 18:49:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:56,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:56,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:56,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:56,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2025-02-06 18:49:56,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2025-02-06 18:49:56,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:56,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2025-02-06 18:49:56,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:57,227 INFO L124 PetriNetUnfolderBase]: 538/1531 cut-off events. [2025-02-06 18:49:57,228 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2025-02-06 18:49:57,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 1531 events. 538/1531 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10764 event pairs, 294 based on Foata normal form. 32/1289 useless extension candidates. Maximal degree in co-relation 3234. Up to 641 conditions per place. [2025-02-06 18:49:57,238 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 142 selfloop transitions, 20 changer transitions 0/198 dead transitions. [2025-02-06 18:49:57,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1384 flow [2025-02-06 18:49:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:49:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:49:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 355 transitions. [2025-02-06 18:49:57,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7304526748971193 [2025-02-06 18:49:57,240 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 640 flow. Second operand 6 states and 355 transitions. [2025-02-06 18:49:57,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1384 flow [2025-02-06 18:49:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1379 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:49:57,247 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 779 flow [2025-02-06 18:49:57,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2025-02-06 18:49:57,248 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2025-02-06 18:49:57,248 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 779 flow [2025-02-06 18:49:57,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2025-02-06 18:49:57,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:57,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:49:57,249 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:57,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1406737202, now seen corresponding path program 1 times [2025-02-06 18:49:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414438109] [2025-02-06 18:49:57,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:57,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:49:57,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:49:57,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:57,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:57,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:57,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414438109] [2025-02-06 18:49:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414438109] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791539044] [2025-02-06 18:49:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:57,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:57,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:57,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:57,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:49:57,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2025-02-06 18:49:57,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:57,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:49:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:57,580 INFO L124 PetriNetUnfolderBase]: 440/1119 cut-off events. [2025-02-06 18:49:57,581 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2025-02-06 18:49:57,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1119 events. 440/1119 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6659 event pairs, 267 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 2769. Up to 624 conditions per place. [2025-02-06 18:49:57,586 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 138 selfloop transitions, 5 changer transitions 13/188 dead transitions. [2025-02-06 18:49:57,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1418 flow [2025-02-06 18:49:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2025-02-06 18:49:57,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2025-02-06 18:49:57,587 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 779 flow. Second operand 5 states and 262 transitions. [2025-02-06 18:49:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1418 flow [2025-02-06 18:49:57,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 188 transitions, 1414 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-06 18:49:57,595 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 773 flow [2025-02-06 18:49:57,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=773, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2025-02-06 18:49:57,596 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2025-02-06 18:49:57,596 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 773 flow [2025-02-06 18:49:57,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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) [2025-02-06 18:49:57,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:57,597 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:57,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:49:57,598 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:57,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash 560495041, now seen corresponding path program 1 times [2025-02-06 18:49:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:57,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284046097] [2025-02-06 18:49:57,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:57,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:57,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:49:57,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:49:57,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:57,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284046097] [2025-02-06 18:49:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284046097] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857392448] [2025-02-06 18:49:57,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:57,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:57,691 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) [2025-02-06 18:49:57,692 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 [2025-02-06 18:49:57,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:49:57,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:49:57,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:57,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:57,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:57,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:57,779 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:49:57,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857392448] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:57,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:49:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:49:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854341772] [2025-02-06 18:49:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:57,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:49:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:57,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:49:57,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:49:57,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:49:57,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2025-02-06 18:49:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:49:57,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:57,931 INFO L124 PetriNetUnfolderBase]: 380/1051 cut-off events. [2025-02-06 18:49:57,931 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2025-02-06 18:49:57,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1051 events. 380/1051 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6360 event pairs, 242 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 2659. Up to 655 conditions per place. [2025-02-06 18:49:57,937 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 84 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2025-02-06 18:49:57,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 145 transitions, 1092 flow [2025-02-06 18:49:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:49:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:49:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2025-02-06 18:49:57,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193415637860082 [2025-02-06 18:49:57,938 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 773 flow. Second operand 6 states and 301 transitions. [2025-02-06 18:49:57,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 145 transitions, 1092 flow [2025-02-06 18:49:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1065 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:49:57,944 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 800 flow [2025-02-06 18:49:57,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2025-02-06 18:49:57,945 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2025-02-06 18:49:57,945 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 800 flow [2025-02-06 18:49:57,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2025-02-06 18:49:57,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:57,946 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:57,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 18:49:58,146 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 [2025-02-06 18:49:58,147 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:58,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 195477665, now seen corresponding path program 1 times [2025-02-06 18:49:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681752905] [2025-02-06 18:49:58,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:58,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:49:58,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:49:58,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:58,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681752905] [2025-02-06 18:49:58,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681752905] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741556431] [2025-02-06 18:49:58,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:58,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:58,322 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) [2025-02-06 18:49:58,326 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 [2025-02-06 18:49:58,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:49:58,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:49:58,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:58,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:58,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:49:58,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:49:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:58,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:49:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:58,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741556431] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:49:58,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:49:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:49:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774135791] [2025-02-06 18:49:58,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:49:58,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:49:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:58,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:49:58,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:49:58,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:49:58,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 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) [2025-02-06 18:49:58,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:58,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:49:58,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:58,859 INFO L124 PetriNetUnfolderBase]: 416/1201 cut-off events. [2025-02-06 18:49:58,860 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2025-02-06 18:49:58,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 1201 events. 416/1201 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7299 event pairs, 242 based on Foata normal form. 6/1069 useless extension candidates. Maximal degree in co-relation 3040. Up to 699 conditions per place. [2025-02-06 18:49:58,869 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 131 selfloop transitions, 43 changer transitions 0/208 dead transitions. [2025-02-06 18:49:58,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 208 transitions, 1752 flow [2025-02-06 18:49:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:49:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:49:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2025-02-06 18:49:58,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.608641975308642 [2025-02-06 18:49:58,872 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 800 flow. Second operand 10 states and 493 transitions. [2025-02-06 18:49:58,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 208 transitions, 1752 flow [2025-02-06 18:49:58,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 208 transitions, 1637 flow, removed 28 selfloop flow, removed 4 redundant places. [2025-02-06 18:49:58,882 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1030 flow [2025-02-06 18:49:58,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2025-02-06 18:49:58,883 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2025-02-06 18:49:58,883 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1030 flow [2025-02-06 18:49:58,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 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) [2025-02-06 18:49:58,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:58,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:58,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:49:59,087 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 [2025-02-06 18:49:59,088 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:59,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -557883040, now seen corresponding path program 1 times [2025-02-06 18:49:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619711968] [2025-02-06 18:49:59,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:49:59,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:59,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:49:59,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:49:59,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:49:59,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:49:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619711968] [2025-02-06 18:49:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619711968] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:49:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:49:59,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:49:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806204517] [2025-02-06 18:49:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:49:59,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:49:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:49:59,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:49:59,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:49:59,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2025-02-06 18:49:59,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2025-02-06 18:49:59,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:49:59,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2025-02-06 18:49:59,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:49:59,579 INFO L124 PetriNetUnfolderBase]: 414/1173 cut-off events. [2025-02-06 18:49:59,579 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2025-02-06 18:49:59,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 1173 events. 414/1173 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6912 event pairs, 242 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 3220. Up to 590 conditions per place. [2025-02-06 18:49:59,591 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 161 selfloop transitions, 10 changer transitions 6/210 dead transitions. [2025-02-06 18:49:59,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 1730 flow [2025-02-06 18:49:59,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:49:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:49:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 269 transitions. [2025-02-06 18:49:59,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6641975308641975 [2025-02-06 18:49:59,595 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1030 flow. Second operand 5 states and 269 transitions. [2025-02-06 18:49:59,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 1730 flow [2025-02-06 18:49:59,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 210 transitions, 1700 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:49:59,610 INFO L231 Difference]: Finished difference. Result has 125 places, 155 transitions, 1013 flow [2025-02-06 18:49:59,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=125, PETRI_TRANSITIONS=155} [2025-02-06 18:49:59,611 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2025-02-06 18:49:59,611 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 155 transitions, 1013 flow [2025-02-06 18:49:59,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2025-02-06 18:49:59,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:49:59,611 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-02-06 18:49:59,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:49:59,612 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:49:59,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:49:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash -125850822, now seen corresponding path program 2 times [2025-02-06 18:49:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:49:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932140194] [2025-02-06 18:49:59,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:49:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:49:59,629 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:49:59,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-06 18:49:59,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:49:59,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:49:59,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:49:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932140194] [2025-02-06 18:49:59,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932140194] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:49:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482736402] [2025-02-06 18:49:59,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:49:59,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:49:59,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:49:59,705 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) [2025-02-06 18:49:59,707 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 [2025-02-06 18:49:59,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 18:49:59,788 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-02-06 18:49:59,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:49:59,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:49:59,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:49:59,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:02,413 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2025-02-06 18:50:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 8 not checked. [2025-02-06 18:50:02,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:50:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482736402] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:02,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 18:50:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452994855] [2025-02-06 18:50:02,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:02,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:02,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:02,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2025-02-06 18:50:02,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2025-02-06 18:50:02,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2025-02-06 18:50:02,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:02,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2025-02-06 18:50:02,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:02,603 INFO L124 PetriNetUnfolderBase]: 414/1289 cut-off events. [2025-02-06 18:50:02,604 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2025-02-06 18:50:02,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 1289 events. 414/1289 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8279 event pairs, 242 based on Foata normal form. 2/1123 useless extension candidates. Maximal degree in co-relation 3391. Up to 909 conditions per place. [2025-02-06 18:50:02,610 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 109 selfloop transitions, 16 changer transitions 0/154 dead transitions. [2025-02-06 18:50:02,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 154 transitions, 1253 flow [2025-02-06 18:50:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2025-02-06 18:50:02,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5709876543209876 [2025-02-06 18:50:02,611 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 1013 flow. Second operand 4 states and 185 transitions. [2025-02-06 18:50:02,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 154 transitions, 1253 flow [2025-02-06 18:50:02,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 154 transitions, 1223 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 18:50:02,618 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1005 flow [2025-02-06 18:50:02,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1005, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2025-02-06 18:50:02,619 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2025-02-06 18:50:02,619 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1005 flow [2025-02-06 18:50:02,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2025-02-06 18:50:02,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:02,619 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:02,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 18:50:02,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:02,824 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:02,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash 929255967, now seen corresponding path program 1 times [2025-02-06 18:50:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:02,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457681826] [2025-02-06 18:50:02,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:02,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:50:02,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:50:02,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:02,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457681826] [2025-02-06 18:50:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457681826] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:02,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814177830] [2025-02-06 18:50:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:02,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:02,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:02,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:02,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2025-02-06 18:50:02,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1005 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-02-06 18:50:02,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:02,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2025-02-06 18:50:02,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:03,074 INFO L124 PetriNetUnfolderBase]: 715/1864 cut-off events. [2025-02-06 18:50:03,074 INFO L125 PetriNetUnfolderBase]: For 1810/1856 co-relation queries the response was YES. [2025-02-06 18:50:03,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4986 conditions, 1864 events. 715/1864 cut-off events. For 1810/1856 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11801 event pairs, 317 based on Foata normal form. 60/1696 useless extension candidates. Maximal degree in co-relation 4693. Up to 1014 conditions per place. [2025-02-06 18:50:03,084 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 147 selfloop transitions, 6 changer transitions 0/183 dead transitions. [2025-02-06 18:50:03,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 183 transitions, 1443 flow [2025-02-06 18:50:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2025-02-06 18:50:03,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2025-02-06 18:50:03,086 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1005 flow. Second operand 4 states and 226 transitions. [2025-02-06 18:50:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 183 transitions, 1443 flow [2025-02-06 18:50:03,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 183 transitions, 1411 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:50:03,093 INFO L231 Difference]: Finished difference. Result has 125 places, 157 transitions, 1014 flow [2025-02-06 18:50:03,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1014, PETRI_PLACES=125, PETRI_TRANSITIONS=157} [2025-02-06 18:50:03,093 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2025-02-06 18:50:03,094 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 157 transitions, 1014 flow [2025-02-06 18:50:03,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2025-02-06 18:50:03,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:03,094 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:03,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:50:03,094 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1528118140, now seen corresponding path program 1 times [2025-02-06 18:50:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627384604] [2025-02-06 18:50:03,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:03,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:50:03,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:50:03,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:03,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 18:50:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627384604] [2025-02-06 18:50:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627384604] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:03,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:50:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335846483] [2025-02-06 18:50:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:03,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:03,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:03,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:03,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2025-02-06 18:50:03,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 157 transitions, 1014 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2025-02-06 18:50:03,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:03,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2025-02-06 18:50:03,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:03,446 INFO L124 PetriNetUnfolderBase]: 568/1627 cut-off events. [2025-02-06 18:50:03,447 INFO L125 PetriNetUnfolderBase]: For 1726/1750 co-relation queries the response was YES. [2025-02-06 18:50:03,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 1627 events. 568/1627 cut-off events. For 1726/1750 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10802 event pairs, 345 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 4173. Up to 1037 conditions per place. [2025-02-06 18:50:03,461 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 112 selfloop transitions, 10 changer transitions 0/156 dead transitions. [2025-02-06 18:50:03,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 156 transitions, 1248 flow [2025-02-06 18:50:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2025-02-06 18:50:03,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2025-02-06 18:50:03,463 INFO L175 Difference]: Start difference. First operand has 125 places, 157 transitions, 1014 flow. Second operand 4 states and 223 transitions. [2025-02-06 18:50:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 156 transitions, 1248 flow [2025-02-06 18:50:03,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 156 transitions, 1243 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:03,474 INFO L231 Difference]: Finished difference. Result has 128 places, 156 transitions, 1023 flow [2025-02-06 18:50:03,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1023, PETRI_PLACES=128, PETRI_TRANSITIONS=156} [2025-02-06 18:50:03,475 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2025-02-06 18:50:03,475 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 156 transitions, 1023 flow [2025-02-06 18:50:03,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2025-02-06 18:50:03,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:03,475 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:03,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 18:50:03,476 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:03,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1950622102, now seen corresponding path program 1 times [2025-02-06 18:50:03,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:03,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24258756] [2025-02-06 18:50:03,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:03,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:50:03,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:50:03,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:03,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 18:50:03,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24258756] [2025-02-06 18:50:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24258756] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814029216] [2025-02-06 18:50:03,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:03,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:03,579 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:03,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 18:50:03,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 18:50:03,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 18:50:03,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:03,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:03,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:03,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:03,810 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814029216] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:03,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:03,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:50:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711486291] [2025-02-06 18:50:03,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:03,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:03,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:03,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:04,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2025-02-06 18:50:04,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 1023 flow. Second operand has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 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) [2025-02-06 18:50:04,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:04,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2025-02-06 18:50:04,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:05,047 INFO L124 PetriNetUnfolderBase]: 941/2292 cut-off events. [2025-02-06 18:50:05,047 INFO L125 PetriNetUnfolderBase]: For 2204/2226 co-relation queries the response was YES. [2025-02-06 18:50:05,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 2292 events. 941/2292 cut-off events. For 2204/2226 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14672 event pairs, 200 based on Foata normal form. 34/2187 useless extension candidates. Maximal degree in co-relation 6265. Up to 611 conditions per place. [2025-02-06 18:50:05,066 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 258 selfloop transitions, 57 changer transitions 14/359 dead transitions. [2025-02-06 18:50:05,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 359 transitions, 2835 flow [2025-02-06 18:50:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:50:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:50:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 798 transitions. [2025-02-06 18:50:05,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.579520697167756 [2025-02-06 18:50:05,070 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 1023 flow. Second operand 17 states and 798 transitions. [2025-02-06 18:50:05,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 359 transitions, 2835 flow [2025-02-06 18:50:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 359 transitions, 2813 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:05,088 INFO L231 Difference]: Finished difference. Result has 143 places, 180 transitions, 1368 flow [2025-02-06 18:50:05,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1368, PETRI_PLACES=143, PETRI_TRANSITIONS=180} [2025-02-06 18:50:05,089 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 66 predicate places. [2025-02-06 18:50:05,089 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 180 transitions, 1368 flow [2025-02-06 18:50:05,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 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) [2025-02-06 18:50:05,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:05,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:05,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 18:50:05,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:05,290 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:05,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -338223998, now seen corresponding path program 1 times [2025-02-06 18:50:05,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132030264] [2025-02-06 18:50:05,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:05,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 18:50:05,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 18:50:05,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:05,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:50:05,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132030264] [2025-02-06 18:50:05,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132030264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:05,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:05,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:05,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052441364] [2025-02-06 18:50:05,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:05,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:05,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:05,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:05,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:05,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:50:05,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 180 transitions, 1368 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2025-02-06 18:50:05,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:05,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:50:05,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:06,027 INFO L124 PetriNetUnfolderBase]: 2028/4339 cut-off events. [2025-02-06 18:50:06,028 INFO L125 PetriNetUnfolderBase]: For 8247/8314 co-relation queries the response was YES. [2025-02-06 18:50:06,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 4339 events. 2028/4339 cut-off events. For 8247/8314 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 28384 event pairs, 941 based on Foata normal form. 0/4008 useless extension candidates. Maximal degree in co-relation 12926. Up to 2464 conditions per place. [2025-02-06 18:50:06,058 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 190 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2025-02-06 18:50:06,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 2018 flow [2025-02-06 18:50:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2025-02-06 18:50:06,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2025-02-06 18:50:06,061 INFO L175 Difference]: Start difference. First operand has 143 places, 180 transitions, 1368 flow. Second operand 4 states and 219 transitions. [2025-02-06 18:50:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 2018 flow [2025-02-06 18:50:06,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 222 transitions, 1874 flow, removed 17 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:06,087 INFO L231 Difference]: Finished difference. Result has 143 places, 184 transitions, 1352 flow [2025-02-06 18:50:06,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1352, PETRI_PLACES=143, PETRI_TRANSITIONS=184} [2025-02-06 18:50:06,089 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 66 predicate places. [2025-02-06 18:50:06,089 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 184 transitions, 1352 flow [2025-02-06 18:50:06,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2025-02-06 18:50:06,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:06,089 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:06,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:50:06,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:06,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1668804305, now seen corresponding path program 1 times [2025-02-06 18:50:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149378096] [2025-02-06 18:50:06,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:06,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:50:06,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:50:06,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:06,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:50:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149378096] [2025-02-06 18:50:06,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149378096] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:06,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496733580] [2025-02-06 18:50:06,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:06,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:06,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 18:50:06,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:50:06,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:50:06,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:06,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:06,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 18:50:06,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 18:50:06,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 18:50:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496733580] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:06,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-02-06 18:50:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738663914] [2025-02-06 18:50:06,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:06,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 18:50:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:06,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 18:50:06,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-02-06 18:50:06,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:50:06,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 184 transitions, 1352 flow. Second operand has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 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) [2025-02-06 18:50:06,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:06,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:50:06,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:07,589 INFO L124 PetriNetUnfolderBase]: 1166/2813 cut-off events. [2025-02-06 18:50:07,589 INFO L125 PetriNetUnfolderBase]: For 3558/3563 co-relation queries the response was YES. [2025-02-06 18:50:07,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8277 conditions, 2813 events. 1166/2813 cut-off events. For 3558/3563 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18941 event pairs, 756 based on Foata normal form. 2/2695 useless extension candidates. Maximal degree in co-relation 7805. Up to 1921 conditions per place. [2025-02-06 18:50:07,615 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 78 selfloop transitions, 69 changer transitions 0/179 dead transitions. [2025-02-06 18:50:07,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 179 transitions, 1601 flow [2025-02-06 18:50:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:50:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:50:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 605 transitions. [2025-02-06 18:50:07,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5335097001763669 [2025-02-06 18:50:07,618 INFO L175 Difference]: Start difference. First operand has 143 places, 184 transitions, 1352 flow. Second operand 14 states and 605 transitions. [2025-02-06 18:50:07,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 179 transitions, 1601 flow [2025-02-06 18:50:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 179 transitions, 1597 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:07,636 INFO L231 Difference]: Finished difference. Result has 155 places, 179 transitions, 1441 flow [2025-02-06 18:50:07,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1441, PETRI_PLACES=155, PETRI_TRANSITIONS=179} [2025-02-06 18:50:07,638 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 78 predicate places. [2025-02-06 18:50:07,638 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 179 transitions, 1441 flow [2025-02-06 18:50:07,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 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) [2025-02-06 18:50:07,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:07,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:07,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 18:50:07,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-06 18:50:07,840 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:07,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1895008685, now seen corresponding path program 1 times [2025-02-06 18:50:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:07,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912617698] [2025-02-06 18:50:07,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:07,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 18:50:07,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 18:50:07,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:07,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:50:07,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:07,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912617698] [2025-02-06 18:50:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912617698] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:07,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755925092] [2025-02-06 18:50:07,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:07,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:07,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:07,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:07,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2025-02-06 18:50:07,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 179 transitions, 1441 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2025-02-06 18:50:07,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:07,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2025-02-06 18:50:07,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:08,459 INFO L124 PetriNetUnfolderBase]: 1706/3881 cut-off events. [2025-02-06 18:50:08,459 INFO L125 PetriNetUnfolderBase]: For 4586/4650 co-relation queries the response was YES. [2025-02-06 18:50:08,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 3881 events. 1706/3881 cut-off events. For 4586/4650 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 26325 event pairs, 834 based on Foata normal form. 0/3682 useless extension candidates. Maximal degree in co-relation 10530. Up to 2212 conditions per place. [2025-02-06 18:50:08,476 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 181 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2025-02-06 18:50:08,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 216 transitions, 1971 flow [2025-02-06 18:50:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2025-02-06 18:50:08,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2025-02-06 18:50:08,478 INFO L175 Difference]: Start difference. First operand has 155 places, 179 transitions, 1441 flow. Second operand 4 states and 220 transitions. [2025-02-06 18:50:08,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 216 transitions, 1971 flow [2025-02-06 18:50:08,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 216 transitions, 1853 flow, removed 3 selfloop flow, removed 12 redundant places. [2025-02-06 18:50:08,489 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 1355 flow [2025-02-06 18:50:08,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1355, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2025-02-06 18:50:08,490 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 71 predicate places. [2025-02-06 18:50:08,490 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 1355 flow [2025-02-06 18:50:08,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2025-02-06 18:50:08,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:08,490 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:08,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:50:08,490 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:08,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2108379788, now seen corresponding path program 1 times [2025-02-06 18:50:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:08,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684506018] [2025-02-06 18:50:08,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:08,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:08,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:08,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:08,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:08,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684506018] [2025-02-06 18:50:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684506018] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145921438] [2025-02-06 18:50:08,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:08,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:08,619 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:08,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 18:50:08,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:08,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:08,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:08,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:08,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 18:50:08,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:08,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145921438] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:08,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:08,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-06 18:50:08,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163612387] [2025-02-06 18:50:08,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:08,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 18:50:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:08,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 18:50:08,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-06 18:50:08,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:50:08,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 1355 flow. Second operand has 24 states, 24 states have (on average 40.291666666666664) internal successors, (967), 24 states have internal predecessors, (967), 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) [2025-02-06 18:50:08,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:08,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:50:08,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:09,585 INFO L124 PetriNetUnfolderBase]: 1280/3249 cut-off events. [2025-02-06 18:50:09,585 INFO L125 PetriNetUnfolderBase]: For 6765/6770 co-relation queries the response was YES. [2025-02-06 18:50:09,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 3249 events. 1280/3249 cut-off events. For 6765/6770 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22435 event pairs, 756 based on Foata normal form. 102/3231 useless extension candidates. Maximal degree in co-relation 9837. Up to 2015 conditions per place. [2025-02-06 18:50:09,610 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 69 selfloop transitions, 174 changer transitions 0/277 dead transitions. [2025-02-06 18:50:09,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 277 transitions, 2831 flow [2025-02-06 18:50:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 18:50:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 18:50:09,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 997 transitions. [2025-02-06 18:50:09,617 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5594837261503928 [2025-02-06 18:50:09,620 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 1355 flow. Second operand 22 states and 997 transitions. [2025-02-06 18:50:09,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 277 transitions, 2831 flow [2025-02-06 18:50:09,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 277 transitions, 2827 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:09,656 INFO L231 Difference]: Finished difference. Result has 174 places, 277 transitions, 2791 flow [2025-02-06 18:50:09,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2791, PETRI_PLACES=174, PETRI_TRANSITIONS=277} [2025-02-06 18:50:09,657 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2025-02-06 18:50:09,657 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 277 transitions, 2791 flow [2025-02-06 18:50:09,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 40.291666666666664) internal successors, (967), 24 states have internal predecessors, (967), 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) [2025-02-06 18:50:09,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:09,658 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:09,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 18:50:09,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:09,859 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:09,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1414827254, now seen corresponding path program 1 times [2025-02-06 18:50:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786367118] [2025-02-06 18:50:09,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:09,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:09,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:09,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:09,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:50:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786367118] [2025-02-06 18:50:09,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786367118] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:09,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:09,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:50:09,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22029279] [2025-02-06 18:50:09,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:09,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:09,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:09,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:09,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:10,106 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2025-02-06 18:50:10,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 277 transitions, 2791 flow. Second operand has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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) [2025-02-06 18:50:10,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:10,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2025-02-06 18:50:10,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:10,918 INFO L124 PetriNetUnfolderBase]: 1843/4826 cut-off events. [2025-02-06 18:50:10,918 INFO L125 PetriNetUnfolderBase]: For 11466/11500 co-relation queries the response was YES. [2025-02-06 18:50:10,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17695 conditions, 4826 events. 1843/4826 cut-off events. For 11466/11500 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 35872 event pairs, 984 based on Foata normal form. 65/4730 useless extension candidates. Maximal degree in co-relation 16669. Up to 2357 conditions per place. [2025-02-06 18:50:10,960 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 355 selfloop transitions, 33 changer transitions 1/425 dead transitions. [2025-02-06 18:50:10,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 425 transitions, 5053 flow [2025-02-06 18:50:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2025-02-06 18:50:10,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6995884773662552 [2025-02-06 18:50:10,962 INFO L175 Difference]: Start difference. First operand has 174 places, 277 transitions, 2791 flow. Second operand 6 states and 340 transitions. [2025-02-06 18:50:10,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 425 transitions, 5053 flow [2025-02-06 18:50:11,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 425 transitions, 4413 flow, removed 197 selfloop flow, removed 9 redundant places. [2025-02-06 18:50:11,029 INFO L231 Difference]: Finished difference. Result has 172 places, 293 transitions, 2651 flow [2025-02-06 18:50:11,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2651, PETRI_PLACES=172, PETRI_TRANSITIONS=293} [2025-02-06 18:50:11,029 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 95 predicate places. [2025-02-06 18:50:11,029 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 293 transitions, 2651 flow [2025-02-06 18:50:11,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.8) internal successors, (244), 5 states have internal predecessors, (244), 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) [2025-02-06 18:50:11,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:11,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:11,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-06 18:50:11,030 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:11,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1414827287, now seen corresponding path program 1 times [2025-02-06 18:50:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:11,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615524343] [2025-02-06 18:50:11,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:11,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:11,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:11,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:11,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:11,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 18:50:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615524343] [2025-02-06 18:50:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615524343] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531105533] [2025-02-06 18:50:11,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:11,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:11,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:11,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 18:50:11,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 18:50:11,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 18:50:11,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:11,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:11,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:50:11,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:11,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:50:11,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531105533] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:11,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:11,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2025-02-06 18:50:11,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697245483] [2025-02-06 18:50:11,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:11,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 18:50:11,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:11,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 18:50:11,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-02-06 18:50:11,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2025-02-06 18:50:11,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 293 transitions, 2651 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 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) [2025-02-06 18:50:11,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:11,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2025-02-06 18:50:11,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:12,817 INFO L124 PetriNetUnfolderBase]: 2996/7529 cut-off events. [2025-02-06 18:50:12,818 INFO L125 PetriNetUnfolderBase]: For 12539/12605 co-relation queries the response was YES. [2025-02-06 18:50:12,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24581 conditions, 7529 events. 2996/7529 cut-off events. For 12539/12605 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 60079 event pairs, 327 based on Foata normal form. 124/7387 useless extension candidates. Maximal degree in co-relation 23637. Up to 1150 conditions per place. [2025-02-06 18:50:12,861 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 453 selfloop transitions, 59 changer transitions 0/542 dead transitions. [2025-02-06 18:50:12,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 542 transitions, 5481 flow [2025-02-06 18:50:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:50:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:50:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 603 transitions. [2025-02-06 18:50:12,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2025-02-06 18:50:12,863 INFO L175 Difference]: Start difference. First operand has 172 places, 293 transitions, 2651 flow. Second operand 13 states and 603 transitions. [2025-02-06 18:50:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 542 transitions, 5481 flow [2025-02-06 18:50:12,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 542 transitions, 5481 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:50:12,929 INFO L231 Difference]: Finished difference. Result has 184 places, 299 transitions, 2827 flow [2025-02-06 18:50:12,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2827, PETRI_PLACES=184, PETRI_TRANSITIONS=299} [2025-02-06 18:50:12,930 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2025-02-06 18:50:12,930 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 299 transitions, 2827 flow [2025-02-06 18:50:12,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 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) [2025-02-06 18:50:12,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:12,931 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:12,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:13,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:13,135 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:13,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -867691677, now seen corresponding path program 1 times [2025-02-06 18:50:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247230793] [2025-02-06 18:50:13,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:13,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:50:13,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:50:13,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:13,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 18:50:13,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:13,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247230793] [2025-02-06 18:50:13,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247230793] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:13,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976291745] [2025-02-06 18:50:13,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:13,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:13,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:13,201 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:13,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 18:50:13,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:50:13,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:50:13,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:13,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:13,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:13,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 18:50:13,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 18:50:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976291745] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:13,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:50:13,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441090443] [2025-02-06 18:50:13,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:13,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:50:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:13,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:50:13,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:50:13,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:50:13,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 299 transitions, 2827 flow. Second operand has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2025-02-06 18:50:13,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:13,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:50:13,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:14,561 INFO L124 PetriNetUnfolderBase]: 4166/9140 cut-off events. [2025-02-06 18:50:14,562 INFO L125 PetriNetUnfolderBase]: For 24072/24112 co-relation queries the response was YES. [2025-02-06 18:50:14,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31557 conditions, 9140 events. 4166/9140 cut-off events. For 24072/24112 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 68967 event pairs, 1059 based on Foata normal form. 306/9301 useless extension candidates. Maximal degree in co-relation 30186. Up to 4073 conditions per place. [2025-02-06 18:50:14,620 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 486 selfloop transitions, 20 changer transitions 0/540 dead transitions. [2025-02-06 18:50:14,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 540 transitions, 5883 flow [2025-02-06 18:50:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 569 transitions. [2025-02-06 18:50:14,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7024691358024692 [2025-02-06 18:50:14,623 INFO L175 Difference]: Start difference. First operand has 184 places, 299 transitions, 2827 flow. Second operand 10 states and 569 transitions. [2025-02-06 18:50:14,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 540 transitions, 5883 flow [2025-02-06 18:50:14,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 540 transitions, 5615 flow, removed 18 selfloop flow, removed 5 redundant places. [2025-02-06 18:50:14,691 INFO L231 Difference]: Finished difference. Result has 191 places, 308 transitions, 2845 flow [2025-02-06 18:50:14,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2845, PETRI_PLACES=191, PETRI_TRANSITIONS=308} [2025-02-06 18:50:14,692 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 114 predicate places. [2025-02-06 18:50:14,692 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 308 transitions, 2845 flow [2025-02-06 18:50:14,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 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) [2025-02-06 18:50:14,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:14,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:14,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:14,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-06 18:50:14,893 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:14,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash 417053928, now seen corresponding path program 1 times [2025-02-06 18:50:14,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737949044] [2025-02-06 18:50:14,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:14,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 18:50:14,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 18:50:14,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:14,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737949044] [2025-02-06 18:50:14,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737949044] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:14,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:14,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:50:14,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476802955] [2025-02-06 18:50:14,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:14,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:14,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:14,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:14,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:50:14,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2025-02-06 18:50:14,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 308 transitions, 2845 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2025-02-06 18:50:14,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:14,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2025-02-06 18:50:14,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:16,199 INFO L124 PetriNetUnfolderBase]: 4418/9970 cut-off events. [2025-02-06 18:50:16,199 INFO L125 PetriNetUnfolderBase]: For 23894/23952 co-relation queries the response was YES. [2025-02-06 18:50:16,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35992 conditions, 9970 events. 4418/9970 cut-off events. For 23894/23952 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 77691 event pairs, 2199 based on Foata normal form. 258/10195 useless extension candidates. Maximal degree in co-relation 34622. Up to 6237 conditions per place. [2025-02-06 18:50:16,266 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 317 selfloop transitions, 10 changer transitions 0/360 dead transitions. [2025-02-06 18:50:16,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 360 transitions, 3823 flow [2025-02-06 18:50:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:50:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:50:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2025-02-06 18:50:16,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7006172839506173 [2025-02-06 18:50:16,267 INFO L175 Difference]: Start difference. First operand has 191 places, 308 transitions, 2845 flow. Second operand 4 states and 227 transitions. [2025-02-06 18:50:16,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 360 transitions, 3823 flow [2025-02-06 18:50:16,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 360 transitions, 3769 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:16,358 INFO L231 Difference]: Finished difference. Result has 194 places, 309 transitions, 2866 flow [2025-02-06 18:50:16,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2866, PETRI_PLACES=194, PETRI_TRANSITIONS=309} [2025-02-06 18:50:16,358 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 117 predicate places. [2025-02-06 18:50:16,358 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 309 transitions, 2866 flow [2025-02-06 18:50:16,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2025-02-06 18:50:16,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:16,359 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:16,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 18:50:16,359 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:16,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1061360546, now seen corresponding path program 2 times [2025-02-06 18:50:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253107391] [2025-02-06 18:50:16,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:16,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 18:50:16,374 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 29 statements. [2025-02-06 18:50:16,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:16,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-06 18:50:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253107391] [2025-02-06 18:50:16,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253107391] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131114369] [2025-02-06 18:50:16,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:16,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:16,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:16,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 18:50:16,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 18:50:16,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 29 statements. [2025-02-06 18:50:16,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:50:16,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:16,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:16,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-06 18:50:16,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-06 18:50:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131114369] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:16,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 18:50:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508775657] [2025-02-06 18:50:16,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:16,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:16,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:16,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:16,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2025-02-06 18:50:16,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 309 transitions, 2866 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2025-02-06 18:50:16,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:16,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2025-02-06 18:50:16,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:17,990 INFO L124 PetriNetUnfolderBase]: 4004/9217 cut-off events. [2025-02-06 18:50:17,991 INFO L125 PetriNetUnfolderBase]: For 27731/27739 co-relation queries the response was YES. [2025-02-06 18:50:18,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34399 conditions, 9217 events. 4004/9217 cut-off events. For 27731/27739 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 71882 event pairs, 2541 based on Foata normal form. 6/9100 useless extension candidates. Maximal degree in co-relation 33026. Up to 5967 conditions per place. [2025-02-06 18:50:18,040 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 173 selfloop transitions, 102 changer transitions 0/309 dead transitions. [2025-02-06 18:50:18,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 309 transitions, 3417 flow [2025-02-06 18:50:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2025-02-06 18:50:18,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-06 18:50:18,041 INFO L175 Difference]: Start difference. First operand has 194 places, 309 transitions, 2866 flow. Second operand 5 states and 243 transitions. [2025-02-06 18:50:18,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 309 transitions, 3417 flow [2025-02-06 18:50:18,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 309 transitions, 3343 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-02-06 18:50:18,112 INFO L231 Difference]: Finished difference. Result has 191 places, 309 transitions, 3033 flow [2025-02-06 18:50:18,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3033, PETRI_PLACES=191, PETRI_TRANSITIONS=309} [2025-02-06 18:50:18,116 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 114 predicate places. [2025-02-06 18:50:18,116 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 309 transitions, 3033 flow [2025-02-06 18:50:18,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2025-02-06 18:50:18,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:18,117 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:18,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:18,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 18:50:18,318 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash -588848345, now seen corresponding path program 1 times [2025-02-06 18:50:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937719815] [2025-02-06 18:50:18,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:18,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:50:18,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:50:18,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:18,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:18,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937719815] [2025-02-06 18:50:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937719815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:18,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:18,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:50:18,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489668305] [2025-02-06 18:50:18,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:18,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:18,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:18,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:18,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:50:18,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2025-02-06 18:50:18,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 309 transitions, 3033 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2025-02-06 18:50:18,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:18,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2025-02-06 18:50:18,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:19,443 INFO L124 PetriNetUnfolderBase]: 4108/9704 cut-off events. [2025-02-06 18:50:19,444 INFO L125 PetriNetUnfolderBase]: For 23278/23349 co-relation queries the response was YES. [2025-02-06 18:50:19,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35058 conditions, 9704 events. 4108/9704 cut-off events. For 23278/23349 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 78388 event pairs, 1515 based on Foata normal form. 180/9852 useless extension candidates. Maximal degree in co-relation 33657. Up to 4221 conditions per place. [2025-02-06 18:50:19,516 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 372 selfloop transitions, 7 changer transitions 11/419 dead transitions. [2025-02-06 18:50:19,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 419 transitions, 4698 flow [2025-02-06 18:50:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2025-02-06 18:50:19,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6617283950617284 [2025-02-06 18:50:19,518 INFO L175 Difference]: Start difference. First operand has 191 places, 309 transitions, 3033 flow. Second operand 5 states and 268 transitions. [2025-02-06 18:50:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 419 transitions, 4698 flow [2025-02-06 18:50:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 419 transitions, 4528 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:50:19,629 INFO L231 Difference]: Finished difference. Result has 192 places, 307 transitions, 2863 flow [2025-02-06 18:50:19,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2863, PETRI_PLACES=192, PETRI_TRANSITIONS=307} [2025-02-06 18:50:19,630 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 115 predicate places. [2025-02-06 18:50:19,630 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 307 transitions, 2863 flow [2025-02-06 18:50:19,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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) [2025-02-06 18:50:19,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:19,630 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:19,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-06 18:50:19,631 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:19,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 30576251, now seen corresponding path program 1 times [2025-02-06 18:50:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307481374] [2025-02-06 18:50:19,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:19,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:50:19,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:50:19,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:19,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 18:50:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307481374] [2025-02-06 18:50:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307481374] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611663376] [2025-02-06 18:50:19,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:19,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:19,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:19,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 18:50:19,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:50:19,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:50:19,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:19,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:19,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:19,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 18:50:19,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 18:50:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611663376] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:19,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:50:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725774246] [2025-02-06 18:50:19,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:19,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:50:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:19,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:50:19,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:50:19,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2025-02-06 18:50:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 307 transitions, 2863 flow. Second operand has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 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) [2025-02-06 18:50:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2025-02-06 18:50:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:21,929 INFO L124 PetriNetUnfolderBase]: 7867/17255 cut-off events. [2025-02-06 18:50:21,929 INFO L125 PetriNetUnfolderBase]: For 38556/38704 co-relation queries the response was YES. [2025-02-06 18:50:22,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60797 conditions, 17255 events. 7867/17255 cut-off events. For 38556/38704 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 142844 event pairs, 1476 based on Foata normal form. 258/17495 useless extension candidates. Maximal degree in co-relation 59425. Up to 4732 conditions per place. [2025-02-06 18:50:22,187 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 501 selfloop transitions, 28 changer transitions 0/559 dead transitions. [2025-02-06 18:50:22,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 559 transitions, 5472 flow [2025-02-06 18:50:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2025-02-06 18:50:22,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6580246913580247 [2025-02-06 18:50:22,190 INFO L175 Difference]: Start difference. First operand has 192 places, 307 transitions, 2863 flow. Second operand 10 states and 533 transitions. [2025-02-06 18:50:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 559 transitions, 5472 flow [2025-02-06 18:50:22,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 559 transitions, 5456 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-06 18:50:22,384 INFO L231 Difference]: Finished difference. Result has 200 places, 322 transitions, 3087 flow [2025-02-06 18:50:22,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3087, PETRI_PLACES=200, PETRI_TRANSITIONS=322} [2025-02-06 18:50:22,386 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2025-02-06 18:50:22,386 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 322 transitions, 3087 flow [2025-02-06 18:50:22,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 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) [2025-02-06 18:50:22,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:22,386 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:22,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 18:50:22,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:22,587 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:22,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1132173409, now seen corresponding path program 1 times [2025-02-06 18:50:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:22,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082765050] [2025-02-06 18:50:22,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:22,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:50:22,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:50:22,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:22,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:22,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082765050] [2025-02-06 18:50:22,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082765050] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:22,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326951653] [2025-02-06 18:50:22,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:22,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:22,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:22,683 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:22,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 18:50:22,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:50:22,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:50:22,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:22,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:22,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:50:22,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:22,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:22,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326951653] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:22,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:50:22,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2025-02-06 18:50:22,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005367838] [2025-02-06 18:50:22,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:22,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:50:22,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:22,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:50:22,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:50:22,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2025-02-06 18:50:22,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 322 transitions, 3087 flow. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 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) [2025-02-06 18:50:22,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:22,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2025-02-06 18:50:22,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:24,972 INFO L124 PetriNetUnfolderBase]: 6595/16360 cut-off events. [2025-02-06 18:50:24,973 INFO L125 PetriNetUnfolderBase]: For 46827/46893 co-relation queries the response was YES. [2025-02-06 18:50:25,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57838 conditions, 16360 events. 6595/16360 cut-off events. For 46827/46893 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 136191 event pairs, 2820 based on Foata normal form. 301/16637 useless extension candidates. Maximal degree in co-relation 56464. Up to 4343 conditions per place. [2025-02-06 18:50:25,127 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 347 selfloop transitions, 22 changer transitions 1/404 dead transitions. [2025-02-06 18:50:25,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 404 transitions, 4362 flow [2025-02-06 18:50:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:50:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:50:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2025-02-06 18:50:25,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2025-02-06 18:50:25,131 INFO L175 Difference]: Start difference. First operand has 200 places, 322 transitions, 3087 flow. Second operand 5 states and 288 transitions. [2025-02-06 18:50:25,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 404 transitions, 4362 flow [2025-02-06 18:50:25,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 404 transitions, 4332 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 18:50:25,262 INFO L231 Difference]: Finished difference. Result has 206 places, 328 transitions, 3238 flow [2025-02-06 18:50:25,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2968, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3238, PETRI_PLACES=206, PETRI_TRANSITIONS=328} [2025-02-06 18:50:25,263 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 129 predicate places. [2025-02-06 18:50:25,263 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 328 transitions, 3238 flow [2025-02-06 18:50:25,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 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) [2025-02-06 18:50:25,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:25,263 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:25,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:25,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:25,468 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:25,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1192842247, now seen corresponding path program 1 times [2025-02-06 18:50:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:25,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623015516] [2025-02-06 18:50:25,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:25,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:50:25,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:50:25,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:25,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 18:50:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623015516] [2025-02-06 18:50:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623015516] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960646589] [2025-02-06 18:50:25,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:25,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:25,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 18:50:25,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:50:25,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:50:25,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:25,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:25,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 18:50:25,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:25,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 18:50:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960646589] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:25,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-06 18:50:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627549839] [2025-02-06 18:50:25,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:25,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 18:50:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:25,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 18:50:25,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-02-06 18:50:26,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2025-02-06 18:50:26,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 328 transitions, 3238 flow. Second operand has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:26,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:26,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2025-02-06 18:50:26,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:32,136 INFO L124 PetriNetUnfolderBase]: 19508/35863 cut-off events. [2025-02-06 18:50:32,137 INFO L125 PetriNetUnfolderBase]: For 97925/98309 co-relation queries the response was YES. [2025-02-06 18:50:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131729 conditions, 35863 events. 19508/35863 cut-off events. For 97925/98309 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 262669 event pairs, 6285 based on Foata normal form. 516/36337 useless extension candidates. Maximal degree in co-relation 130164. Up to 9637 conditions per place. [2025-02-06 18:50:32,547 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 551 selfloop transitions, 187 changer transitions 0/760 dead transitions. [2025-02-06 18:50:32,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 760 transitions, 7740 flow [2025-02-06 18:50:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 18:50:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 18:50:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 788 transitions. [2025-02-06 18:50:32,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2025-02-06 18:50:32,549 INFO L175 Difference]: Start difference. First operand has 206 places, 328 transitions, 3238 flow. Second operand 20 states and 788 transitions. [2025-02-06 18:50:32,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 760 transitions, 7740 flow [2025-02-06 18:50:32,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 760 transitions, 7727 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:32,858 INFO L231 Difference]: Finished difference. Result has 230 places, 407 transitions, 4762 flow [2025-02-06 18:50:32,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4762, PETRI_PLACES=230, PETRI_TRANSITIONS=407} [2025-02-06 18:50:32,859 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 153 predicate places. [2025-02-06 18:50:32,859 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 407 transitions, 4762 flow [2025-02-06 18:50:32,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:32,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:32,860 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:32,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 18:50:33,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:33,064 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:33,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1784997725, now seen corresponding path program 2 times [2025-02-06 18:50:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873384141] [2025-02-06 18:50:33,065 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:33,077 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:50:33,095 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:50:33,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:33,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-06 18:50:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873384141] [2025-02-06 18:50:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873384141] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072159083] [2025-02-06 18:50:33,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:50:33,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:33,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:33,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:33,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 18:50:33,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 18:50:33,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:50:33,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:50:33,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:33,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:50:33,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:34,347 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2025-02-06 18:50:35,678 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post2| 1) .cse0)))) is different from true [2025-02-06 18:50:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 8 not checked. [2025-02-06 18:50:35,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-06 18:50:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072159083] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:35,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:35,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2025-02-06 18:50:35,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520687812] [2025-02-06 18:50:35,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:35,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:50:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:35,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:50:35,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=29, Unknown=2, NotChecked=22, Total=72 [2025-02-06 18:50:35,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 81 [2025-02-06 18:50:35,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 407 transitions, 4762 flow. Second operand has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 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) [2025-02-06 18:50:35,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:35,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 81 [2025-02-06 18:50:35,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:41,927 INFO L124 PetriNetUnfolderBase]: 14249/29639 cut-off events. [2025-02-06 18:50:41,928 INFO L125 PetriNetUnfolderBase]: For 131755/131791 co-relation queries the response was YES. [2025-02-06 18:50:42,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119274 conditions, 29639 events. 14249/29639 cut-off events. For 131755/131791 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 238514 event pairs, 5360 based on Foata normal form. 298/29607 useless extension candidates. Maximal degree in co-relation 117442. Up to 13953 conditions per place. [2025-02-06 18:50:42,339 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 376 selfloop transitions, 31 changer transitions 38/481 dead transitions. [2025-02-06 18:50:42,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 481 transitions, 6384 flow [2025-02-06 18:50:42,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:50:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:50:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2025-02-06 18:50:42,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6225749559082893 [2025-02-06 18:50:42,342 INFO L175 Difference]: Start difference. First operand has 230 places, 407 transitions, 4762 flow. Second operand 7 states and 353 transitions. [2025-02-06 18:50:42,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 481 transitions, 6384 flow [2025-02-06 18:50:42,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 481 transitions, 6210 flow, removed 17 selfloop flow, removed 9 redundant places. [2025-02-06 18:50:42,638 INFO L231 Difference]: Finished difference. Result has 228 places, 392 transitions, 4541 flow [2025-02-06 18:50:42,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4541, PETRI_PLACES=228, PETRI_TRANSITIONS=392} [2025-02-06 18:50:42,639 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, 151 predicate places. [2025-02-06 18:50:42,639 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 392 transitions, 4541 flow [2025-02-06 18:50:42,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.22222222222222) internal successors, (425), 9 states have internal predecessors, (425), 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) [2025-02-06 18:50:42,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:42,639 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:42,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 18:50:42,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:42,840 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2025-02-06 18:50:42,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:42,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1170774697, now seen corresponding path program 1 times [2025-02-06 18:50:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44042355] [2025-02-06 18:50:42,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:42,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:42,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 18:50:42,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:50:42,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:42,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 18:50:42,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524511111] [2025-02-06 18:50:42,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:42,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:42,878 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:42,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 18:50:42,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 18:50:42,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 18:50:42,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:42,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:42,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:50:42,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 18:50:43,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 18:50:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44042355] [2025-02-06 18:50:54,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 18:50:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524511111] [2025-02-06 18:50:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524511111] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:54,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:50:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-02-06 18:50:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136530186] [2025-02-06 18:50:54,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:54,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:50:54,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:54,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:50:54,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72 [2025-02-06 18:50:58,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:02,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:06,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:10,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:14,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:17,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:21,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2025-02-06 18:51:24,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]