./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:55:49,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:55:49,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:55:49,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:55:49,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:55:49,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:55:49,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:55:49,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:55:49,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:55:49,166 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:55:49,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:55:49,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:55:49,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:55:49,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:55:49,168 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:55:49,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:49,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:49,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:55:49,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:55:49,169 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 -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2025-01-10 06:55:49,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:55:49,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:55:49,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:55:49,431 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:55:49,431 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:55:49,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2025-01-10 06:55:50,564 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36d88c67b/21bb3b45af99436b820fbb971e876c80/FLAG193073bd6 [2025-01-10 06:55:50,884 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:55:50,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2025-01-10 06:55:50,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36d88c67b/21bb3b45af99436b820fbb971e876c80/FLAG193073bd6 [2025-01-10 06:55:50,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36d88c67b/21bb3b45af99436b820fbb971e876c80 [2025-01-10 06:55:50,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:55:50,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:55:50,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:50,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:55:50,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:55:50,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:50" (1/1) ... [2025-01-10 06:55:50,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd3c4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:50, skipping insertion in model container [2025-01-10 06:55:50,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:50" (1/1) ... [2025-01-10 06:55:50,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:55:51,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:51,076 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:55:51,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:55:51,111 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:55:51,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51 WrapperNode [2025-01-10 06:55:51,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:55:51,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:51,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:55:51,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:55:51,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,144 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 109 [2025-01-10 06:55:51,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:55:51,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:55:51,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:55:51,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:55:51,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,162 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-01-10 06:55:51,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,168 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:55:51,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:55:51,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:55:51,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:55:51,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (1/1) ... [2025-01-10 06:55:51,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:55:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:51,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:55:51,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:55:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:55:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:55:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:55:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:55:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:55:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:55:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:55:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:55:51,240 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:55:51,306 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:55:51,307 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:55:51,505 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:55:51,505 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:55:51,644 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:55:51,645 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:55:51,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:51 BoogieIcfgContainer [2025-01-10 06:55:51,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:55:51,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:55:51,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:55:51,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:55:51,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:50" (1/3) ... [2025-01-10 06:55:51,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70adff0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:51, skipping insertion in model container [2025-01-10 06:55:51,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:51" (2/3) ... [2025-01-10 06:55:51,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70adff0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:51, skipping insertion in model container [2025-01-10 06:55:51,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:51" (3/3) ... [2025-01-10 06:55:51,655 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2025-01-10 06:55:51,668 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:55:51,669 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-array-sum.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2025-01-10 06:55:51,670 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:55:51,731 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:55:51,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 139 flow [2025-01-10 06:55:51,796 INFO L124 PetriNetUnfolderBase]: 6/56 cut-off events. [2025-01-10 06:55:51,799 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:55:51,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 6/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2025-01-10 06:55:51,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 139 flow [2025-01-10 06:55:51,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 54 transitions, 123 flow [2025-01-10 06:55:51,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:55:51,838 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;@5eacc5a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:55:51,840 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-01-10 06:55:51,843 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:55:51,843 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:55:51,843 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:55:51,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:51,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:55:51,844 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:51,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:51,849 INFO L85 PathProgramCache]: Analyzing trace with hash 457739, now seen corresponding path program 1 times [2025-01-10 06:55:51,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:51,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169060680] [2025-01-10 06:55:51,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:51,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:55:51,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:55:51,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:51,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:52,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:52,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169060680] [2025-01-10 06:55:52,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169060680] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:52,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:52,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:55:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155321996] [2025-01-10 06:55:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:52,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:52,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:52,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:52,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:55:52,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:52,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:55:52,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:52,320 INFO L124 PetriNetUnfolderBase]: 815/1704 cut-off events. [2025-01-10 06:55:52,321 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2025-01-10 06:55:52,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2949 conditions, 1704 events. 815/1704 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10811 event pairs, 608 based on Foata normal form. 2/1484 useless extension candidates. Maximal degree in co-relation 2702. Up to 1144 conditions per place. [2025-01-10 06:55:52,337 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 33 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2025-01-10 06:55:52,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 215 flow [2025-01-10 06:55:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-01-10 06:55:52,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2025-01-10 06:55:52,359 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 123 flow. Second operand 4 states and 136 transitions. [2025-01-10 06:55:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 215 flow [2025-01-10 06:55:52,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:55:52,378 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 174 flow [2025-01-10 06:55:52,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2025-01-10 06:55:52,383 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2025-01-10 06:55:52,383 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 174 flow [2025-01-10 06:55:52,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:52,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:52,383 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:55:52,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:55:52,384 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:52,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 752045907, now seen corresponding path program 1 times [2025-01-10 06:55:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712296336] [2025-01-10 06:55:52,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:52,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:55:52,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:55:52,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:52,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:52,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:52,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712296336] [2025-01-10 06:55:52,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712296336] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:52,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503300984] [2025-01-10 06:55:52,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:52,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:52,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:52,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:52,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:55:52,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:55:52,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:55:52,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:52,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:52,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:52,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:52,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:55:52,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503300984] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:52,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:55:52,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:55:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383899093] [2025-01-10 06:55:52,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:52,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:55:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:52,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:55:52,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:55:52,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:55:52,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:52,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:52,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:55:52,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:52,920 INFO L124 PetriNetUnfolderBase]: 815/1702 cut-off events. [2025-01-10 06:55:52,920 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-01-10 06:55:52,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1702 events. 815/1702 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10759 event pairs, 608 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 2881. Up to 1134 conditions per place. [2025-01-10 06:55:52,935 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 26 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2025-01-10 06:55:52,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 242 flow [2025-01-10 06:55:52,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:55:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:55:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2025-01-10 06:55:52,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5028248587570622 [2025-01-10 06:55:52,937 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 174 flow. Second operand 6 states and 178 transitions. [2025-01-10 06:55:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 242 flow [2025-01-10 06:55:52,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:55:52,939 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 190 flow [2025-01-10 06:55:52,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2025-01-10 06:55:52,940 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2025-01-10 06:55:52,940 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 190 flow [2025-01-10 06:55:52,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:52,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:52,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:55:52,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:53,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:53,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:53,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1838587085, now seen corresponding path program 1 times [2025-01-10 06:55:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659895994] [2025-01-10 06:55:53,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:53,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:55:53,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:55:53,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:53,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:53,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659895994] [2025-01-10 06:55:53,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659895994] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803456450] [2025-01-10 06:55:53,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:53,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:53,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:53,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:53,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:55:53,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:55:53,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:55:53,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:53,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:53,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:55:53,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:53,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803456450] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:53,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:55:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469489322] [2025-01-10 06:55:53,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:53,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:55:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:53,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:55:53,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:55:53,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:55:53,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:53,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:53,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:55:53,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:53,700 INFO L124 PetriNetUnfolderBase]: 821/1726 cut-off events. [2025-01-10 06:55:53,700 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2025-01-10 06:55:53,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3025 conditions, 1726 events. 821/1726 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11020 event pairs, 608 based on Foata normal form. 6/1512 useless extension candidates. Maximal degree in co-relation 2883. Up to 1145 conditions per place. [2025-01-10 06:55:53,711 INFO L140 encePairwiseOnDemand]: 50/59 looper letters, 31 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2025-01-10 06:55:53,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 416 flow [2025-01-10 06:55:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:55:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:55:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2025-01-10 06:55:53,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2025-01-10 06:55:53,715 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 190 flow. Second operand 10 states and 292 transitions. [2025-01-10 06:55:53,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 416 flow [2025-01-10 06:55:53,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 358 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-01-10 06:55:53,717 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 330 flow [2025-01-10 06:55:53,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2025-01-10 06:55:53,720 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2025-01-10 06:55:53,720 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 330 flow [2025-01-10 06:55:53,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:53,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:53,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:53,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:55:53,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:53,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:53,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1783670477, now seen corresponding path program 1 times [2025-01-10 06:55:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949037589] [2025-01-10 06:55:53,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:53,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:55:53,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:55:53,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:53,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949037589] [2025-01-10 06:55:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949037589] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:54,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:54,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969469054] [2025-01-10 06:55:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:54,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:54,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:54,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:54,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:54,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:55:54,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:54,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:54,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:55:54,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:54,277 INFO L124 PetriNetUnfolderBase]: 1614/2877 cut-off events. [2025-01-10 06:55:54,278 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-01-10 06:55:54,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 2877 events. 1614/2877 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17320 event pairs, 858 based on Foata normal form. 62/2652 useless extension candidates. Maximal degree in co-relation 5282. Up to 1643 conditions per place. [2025-01-10 06:55:54,292 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 86 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-01-10 06:55:54,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 584 flow [2025-01-10 06:55:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:54,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:54,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2025-01-10 06:55:54,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2025-01-10 06:55:54,293 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 330 flow. Second operand 4 states and 168 transitions. [2025-01-10 06:55:54,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 584 flow [2025-01-10 06:55:54,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 560 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-01-10 06:55:54,296 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 335 flow [2025-01-10 06:55:54,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2025-01-10 06:55:54,296 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2025-01-10 06:55:54,296 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 335 flow [2025-01-10 06:55:54,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:54,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:54,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:54,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:55:54,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:54,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -922729330, now seen corresponding path program 1 times [2025-01-10 06:55:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423431291] [2025-01-10 06:55:54,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:54,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:55:54,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:54,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:54,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:54,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:54,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423431291] [2025-01-10 06:55:54,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423431291] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:54,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:54,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:54,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236506771] [2025-01-10 06:55:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:54,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:54,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:54,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:54,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:54,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-01-10 06:55:54,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:54,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:54,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-01-10 06:55:54,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:54,791 INFO L124 PetriNetUnfolderBase]: 3211/5700 cut-off events. [2025-01-10 06:55:54,792 INFO L125 PetriNetUnfolderBase]: For 1667/1845 co-relation queries the response was YES. [2025-01-10 06:55:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11968 conditions, 5700 events. 3211/5700 cut-off events. For 1667/1845 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 37000 event pairs, 1536 based on Foata normal form. 101/5470 useless extension candidates. Maximal degree in co-relation 11901. Up to 3018 conditions per place. [2025-01-10 06:55:54,821 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 95 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2025-01-10 06:55:54,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 655 flow [2025-01-10 06:55:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2025-01-10 06:55:54,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6949152542372882 [2025-01-10 06:55:54,822 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 335 flow. Second operand 4 states and 164 transitions. [2025-01-10 06:55:54,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 655 flow [2025-01-10 06:55:54,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:54,829 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 361 flow [2025-01-10 06:55:54,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2025-01-10 06:55:54,831 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2025-01-10 06:55:54,832 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 361 flow [2025-01-10 06:55:54,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:54,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:54,833 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:54,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:55:54,833 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:54,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -226262650, now seen corresponding path program 1 times [2025-01-10 06:55:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:54,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515308] [2025-01-10 06:55:54,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:54,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:54,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 06:55:54,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 06:55:54,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:54,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:55:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515308] [2025-01-10 06:55:54,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515308] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:54,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:54,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:55:54,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969376197] [2025-01-10 06:55:54,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:54,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:55:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:54,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:55:54,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:55:54,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2025-01-10 06:55:54,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2025-01-10 06:55:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:55,610 INFO L124 PetriNetUnfolderBase]: 3439/6881 cut-off events. [2025-01-10 06:55:55,611 INFO L125 PetriNetUnfolderBase]: For 2269/2271 co-relation queries the response was YES. [2025-01-10 06:55:55,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14959 conditions, 6881 events. 3439/6881 cut-off events. For 2269/2271 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 50513 event pairs, 2335 based on Foata normal form. 99/6678 useless extension candidates. Maximal degree in co-relation 14862. Up to 3697 conditions per place. [2025-01-10 06:55:55,651 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 101 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2025-01-10 06:55:55,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 136 transitions, 799 flow [2025-01-10 06:55:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:55:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:55:55,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2025-01-10 06:55:55,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6638418079096046 [2025-01-10 06:55:55,654 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 361 flow. Second operand 6 states and 235 transitions. [2025-01-10 06:55:55,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 136 transitions, 799 flow [2025-01-10 06:55:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 136 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:55,662 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 417 flow [2025-01-10 06:55:55,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=417, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2025-01-10 06:55:55,664 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2025-01-10 06:55:55,664 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 417 flow [2025-01-10 06:55:55,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:55,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:55,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:55,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:55:55,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:55,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -33435009, now seen corresponding path program 1 times [2025-01-10 06:55:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:55,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014921354] [2025-01-10 06:55:55,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:55,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:55,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:55:55,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:55:55,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:55,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:55,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:55,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014921354] [2025-01-10 06:55:55,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014921354] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:55,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:55,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268593809] [2025-01-10 06:55:55,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:55,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:55,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:55,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:55,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:55,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:55:55,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:55,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:55,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:55:55,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:56,378 INFO L124 PetriNetUnfolderBase]: 3549/6875 cut-off events. [2025-01-10 06:55:56,378 INFO L125 PetriNetUnfolderBase]: For 3846/4162 co-relation queries the response was YES. [2025-01-10 06:55:56,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15701 conditions, 6875 events. 3549/6875 cut-off events. For 3846/4162 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 48586 event pairs, 695 based on Foata normal form. 170/6871 useless extension candidates. Maximal degree in co-relation 15601. Up to 3503 conditions per place. [2025-01-10 06:55:56,410 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 97 selfloop transitions, 4 changer transitions 2/124 dead transitions. [2025-01-10 06:55:56,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 773 flow [2025-01-10 06:55:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2025-01-10 06:55:56,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2025-01-10 06:55:56,413 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 417 flow. Second operand 4 states and 162 transitions. [2025-01-10 06:55:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 773 flow [2025-01-10 06:55:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 761 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:55:56,418 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 430 flow [2025-01-10 06:55:56,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2025-01-10 06:55:56,419 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2025-01-10 06:55:56,420 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 430 flow [2025-01-10 06:55:56,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:56,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:56,420 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:55:56,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:55:56,420 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:56,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash -593506027, now seen corresponding path program 2 times [2025-01-10 06:55:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:56,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100442506] [2025-01-10 06:55:56,421 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:56,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:56,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:55:56,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:55:56,436 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:55:56,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100442506] [2025-01-10 06:55:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100442506] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:56,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105214982] [2025-01-10 06:55:56,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:56,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:56,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:56,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:56,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:55:56,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:55:56,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:55:56,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:55:56,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:56,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:55:56,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:56,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:55:56,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105214982] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:56,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:56,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:55:56,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764350659] [2025-01-10 06:55:56,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:56,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:56,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:56,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:56,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:56,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:55:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:56,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:56,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:55:56,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:56,905 INFO L124 PetriNetUnfolderBase]: 2666/5081 cut-off events. [2025-01-10 06:55:56,905 INFO L125 PetriNetUnfolderBase]: For 3111/3356 co-relation queries the response was YES. [2025-01-10 06:55:56,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12340 conditions, 5081 events. 2666/5081 cut-off events. For 3111/3356 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 33698 event pairs, 2011 based on Foata normal form. 104/4940 useless extension candidates. Maximal degree in co-relation 12241. Up to 3819 conditions per place. [2025-01-10 06:55:56,927 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 49 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2025-01-10 06:55:56,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 550 flow [2025-01-10 06:55:56,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-01-10 06:55:56,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5254237288135594 [2025-01-10 06:55:56,929 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 430 flow. Second operand 4 states and 124 transitions. [2025-01-10 06:55:56,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 550 flow [2025-01-10 06:55:56,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:55:56,936 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 452 flow [2025-01-10 06:55:56,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2025-01-10 06:55:56,937 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2025-01-10 06:55:56,937 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 452 flow [2025-01-10 06:55:56,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:56,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:56,938 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-01-10 06:55:56,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:57,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:57,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:57,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:57,139 INFO L85 PathProgramCache]: Analyzing trace with hash -150762460, now seen corresponding path program 1 times [2025-01-10 06:55:57,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:57,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770121601] [2025-01-10 06:55:57,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:57,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:57,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-10 06:55:57,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-10 06:55:57,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:57,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-10 06:55:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770121601] [2025-01-10 06:55:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770121601] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:55:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:55:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:55:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634230217] [2025-01-10 06:55:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:55:57,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:55:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:57,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:55:57,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:55:57,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2025-01-10 06:55:57,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:57,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:57,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2025-01-10 06:55:57,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:57,514 INFO L124 PetriNetUnfolderBase]: 2661/5061 cut-off events. [2025-01-10 06:55:57,514 INFO L125 PetriNetUnfolderBase]: For 3082/3339 co-relation queries the response was YES. [2025-01-10 06:55:57,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 5061 events. 2661/5061 cut-off events. For 3082/3339 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 33367 event pairs, 2011 based on Foata normal form. 110/4949 useless extension candidates. Maximal degree in co-relation 12213. Up to 3806 conditions per place. [2025-01-10 06:55:57,541 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 53 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2025-01-10 06:55:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 569 flow [2025-01-10 06:55:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:55:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:55:57,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-01-10 06:55:57,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2025-01-10 06:55:57,543 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 452 flow. Second operand 4 states and 146 transitions. [2025-01-10 06:55:57,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 569 flow [2025-01-10 06:55:57,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 06:55:57,549 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 428 flow [2025-01-10 06:55:57,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2025-01-10 06:55:57,550 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2025-01-10 06:55:57,550 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 428 flow [2025-01-10 06:55:57,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:57,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:57,551 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:57,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:55:57,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:57,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1097566829, now seen corresponding path program 1 times [2025-01-10 06:55:57,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:57,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884337271] [2025-01-10 06:55:57,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:57,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:57,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:57,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:57,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:57,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:55:57,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884337271] [2025-01-10 06:55:57,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884337271] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:57,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272322178] [2025-01-10 06:55:57,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:57,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:57,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:57,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:57,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:55:57,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:57,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:57,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:57,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:57,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:55:57,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:57,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:55:57,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272322178] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:57,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:57,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-01-10 06:55:57,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752132314] [2025-01-10 06:55:57,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:57,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:55:57,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:57,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:55:57,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:55:58,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2025-01-10 06:55:58,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 428 flow. Second operand has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:58,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:58,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2025-01-10 06:55:58,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:59,391 INFO L124 PetriNetUnfolderBase]: 4956/8665 cut-off events. [2025-01-10 06:55:59,391 INFO L125 PetriNetUnfolderBase]: For 4782/5200 co-relation queries the response was YES. [2025-01-10 06:55:59,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21336 conditions, 8665 events. 4956/8665 cut-off events. For 4782/5200 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 57342 event pairs, 1128 based on Foata normal form. 378/8661 useless extension candidates. Maximal degree in co-relation 21235. Up to 1524 conditions per place. [2025-01-10 06:55:59,452 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 192 selfloop transitions, 46 changer transitions 0/258 dead transitions. [2025-01-10 06:55:59,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 258 transitions, 1498 flow [2025-01-10 06:55:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:55:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:55:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 532 transitions. [2025-01-10 06:55:59,457 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5304087736789631 [2025-01-10 06:55:59,457 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 428 flow. Second operand 17 states and 532 transitions. [2025-01-10 06:55:59,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 258 transitions, 1498 flow [2025-01-10 06:55:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 258 transitions, 1474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:59,474 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 645 flow [2025-01-10 06:55:59,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=645, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2025-01-10 06:55:59,475 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2025-01-10 06:55:59,475 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 645 flow [2025-01-10 06:55:59,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.31578947368421) internal successors, (424), 19 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:59,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:59,476 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:59,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 06:55:59,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:55:59,681 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:55:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 939032940, now seen corresponding path program 1 times [2025-01-10 06:55:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528493364] [2025-01-10 06:55:59,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:59,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:59,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:59,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:59,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 06:55:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528493364] [2025-01-10 06:55:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528493364] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436908556] [2025-01-10 06:55:59,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:59,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:59,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:59,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:55:59,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:55:59,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:55:59,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:59,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:59,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 06:55:59,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:00,129 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 06:56:00,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 06:56:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436908556] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:00,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-01-10 06:56:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010689822] [2025-01-10 06:56:00,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:00,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:56:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:00,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:56:00,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:56:00,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:56:00,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 645 flow. Second operand has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:00,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:00,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:56:00,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:01,077 INFO L124 PetriNetUnfolderBase]: 4371/8096 cut-off events. [2025-01-10 06:56:01,077 INFO L125 PetriNetUnfolderBase]: For 8871/9284 co-relation queries the response was YES. [2025-01-10 06:56:01,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21073 conditions, 8096 events. 4371/8096 cut-off events. For 8871/9284 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 56083 event pairs, 3459 based on Foata normal form. 144/7846 useless extension candidates. Maximal degree in co-relation 20982. Up to 3136 conditions per place. [2025-01-10 06:56:01,143 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 64 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2025-01-10 06:56:01,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 838 flow [2025-01-10 06:56:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 06:56:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 06:56:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 325 transitions. [2025-01-10 06:56:01,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5007704160246533 [2025-01-10 06:56:01,149 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 645 flow. Second operand 11 states and 325 transitions. [2025-01-10 06:56:01,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 838 flow [2025-01-10 06:56:01,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 743 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-01-10 06:56:01,162 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 553 flow [2025-01-10 06:56:01,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=553, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2025-01-10 06:56:01,162 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 48 predicate places. [2025-01-10 06:56:01,164 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 553 flow [2025-01-10 06:56:01,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.210526315789473) internal successors, (460), 19 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:01,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:01,164 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] [2025-01-10 06:56:01,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:01,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:56:01,369 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:01,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash -955761268, now seen corresponding path program 1 times [2025-01-10 06:56:01,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:01,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198543108] [2025-01-10 06:56:01,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:01,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:56:01,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:56:01,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:01,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198543108] [2025-01-10 06:56:01,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198543108] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:01,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:01,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:01,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710280434] [2025-01-10 06:56:01,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:01,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:01,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:01,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:01,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:01,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:56:01,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 553 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:01,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:01,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:56:01,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:02,288 INFO L124 PetriNetUnfolderBase]: 7494/13852 cut-off events. [2025-01-10 06:56:02,292 INFO L125 PetriNetUnfolderBase]: For 9497/10185 co-relation queries the response was YES. [2025-01-10 06:56:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34217 conditions, 13852 events. 7494/13852 cut-off events. For 9497/10185 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 107267 event pairs, 2583 based on Foata normal form. 484/14156 useless extension candidates. Maximal degree in co-relation 34132. Up to 6216 conditions per place. [2025-01-10 06:56:02,405 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 162 selfloop transitions, 11 changer transitions 0/192 dead transitions. [2025-01-10 06:56:02,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 1323 flow [2025-01-10 06:56:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2025-01-10 06:56:02,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6864406779661016 [2025-01-10 06:56:02,407 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 553 flow. Second operand 6 states and 243 transitions. [2025-01-10 06:56:02,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 192 transitions, 1323 flow [2025-01-10 06:56:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1249 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-01-10 06:56:02,429 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 564 flow [2025-01-10 06:56:02,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2025-01-10 06:56:02,429 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2025-01-10 06:56:02,430 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 564 flow [2025-01-10 06:56:02,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:02,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:02,431 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] [2025-01-10 06:56:02,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 06:56:02,432 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:02,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1741330110, now seen corresponding path program 2 times [2025-01-10 06:56:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:02,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546698807] [2025-01-10 06:56:02,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:02,441 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:56:02,448 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:56:02,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:02,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:02,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:02,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546698807] [2025-01-10 06:56:02,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546698807] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:02,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:02,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000933155] [2025-01-10 06:56:02,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:02,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:02,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:02,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:02,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:56:02,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:02,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:02,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:56:02,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:03,882 INFO L124 PetriNetUnfolderBase]: 10898/19725 cut-off events. [2025-01-10 06:56:03,882 INFO L125 PetriNetUnfolderBase]: For 22630/24180 co-relation queries the response was YES. [2025-01-10 06:56:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51907 conditions, 19725 events. 10898/19725 cut-off events. For 22630/24180 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 154197 event pairs, 4155 based on Foata normal form. 684/19787 useless extension candidates. Maximal degree in co-relation 51829. Up to 6748 conditions per place. [2025-01-10 06:56:04,001 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 165 selfloop transitions, 11 changer transitions 0/195 dead transitions. [2025-01-10 06:56:04,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 195 transitions, 1343 flow [2025-01-10 06:56:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2025-01-10 06:56:04,003 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6694915254237288 [2025-01-10 06:56:04,003 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 564 flow. Second operand 6 states and 237 transitions. [2025-01-10 06:56:04,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 195 transitions, 1343 flow [2025-01-10 06:56:04,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 195 transitions, 1332 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:56:04,038 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 636 flow [2025-01-10 06:56:04,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2025-01-10 06:56:04,039 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 54 predicate places. [2025-01-10 06:56:04,039 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 636 flow [2025-01-10 06:56:04,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:04,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:04,040 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] [2025-01-10 06:56:04,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:56:04,040 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:04,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2075814934, now seen corresponding path program 3 times [2025-01-10 06:56:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278881961] [2025-01-10 06:56:04,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:56:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:04,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 1 equivalence classes. [2025-01-10 06:56:04,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:56:04,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 06:56:04,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:56:04,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278881961] [2025-01-10 06:56:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278881961] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:04,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 06:56:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744512569] [2025-01-10 06:56:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:04,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:04,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:04,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:04,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:04,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:56:04,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 636 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:04,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:04,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:56:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:05,706 INFO L124 PetriNetUnfolderBase]: 11388/20837 cut-off events. [2025-01-10 06:56:05,706 INFO L125 PetriNetUnfolderBase]: For 38100/39480 co-relation queries the response was YES. [2025-01-10 06:56:05,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56975 conditions, 20837 events. 11388/20837 cut-off events. For 38100/39480 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 161334 event pairs, 2425 based on Foata normal form. 364/20635 useless extension candidates. Maximal degree in co-relation 56893. Up to 8415 conditions per place. [2025-01-10 06:56:05,946 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 158 selfloop transitions, 18 changer transitions 1/196 dead transitions. [2025-01-10 06:56:05,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 1392 flow [2025-01-10 06:56:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2025-01-10 06:56:05,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2025-01-10 06:56:05,948 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 636 flow. Second operand 6 states and 241 transitions. [2025-01-10 06:56:05,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 1392 flow [2025-01-10 06:56:06,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 196 transitions, 1371 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:06,022 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 701 flow [2025-01-10 06:56:06,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=701, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2025-01-10 06:56:06,027 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2025-01-10 06:56:06,028 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 701 flow [2025-01-10 06:56:06,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:06,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:06,028 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:06,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 06:56:06,028 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:06,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash -913105016, now seen corresponding path program 1 times [2025-01-10 06:56:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:06,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821085508] [2025-01-10 06:56:06,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:06,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:06,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:56:06,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:56:06,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:06,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 06:56:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821085508] [2025-01-10 06:56:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821085508] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:06,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:56:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333988727] [2025-01-10 06:56:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:06,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:06,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:06,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:06,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2025-01-10 06:56:06,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:06,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:06,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2025-01-10 06:56:06,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:07,739 INFO L124 PetriNetUnfolderBase]: 9843/18135 cut-off events. [2025-01-10 06:56:07,740 INFO L125 PetriNetUnfolderBase]: For 31324/32441 co-relation queries the response was YES. [2025-01-10 06:56:07,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49447 conditions, 18135 events. 9843/18135 cut-off events. For 31324/32441 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 136951 event pairs, 8003 based on Foata normal form. 147/17704 useless extension candidates. Maximal degree in co-relation 49363. Up to 13658 conditions per place. [2025-01-10 06:56:07,874 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 69 selfloop transitions, 8 changer transitions 29/133 dead transitions. [2025-01-10 06:56:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 1053 flow [2025-01-10 06:56:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:56:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:56:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2025-01-10 06:56:07,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129943502824858 [2025-01-10 06:56:07,875 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 701 flow. Second operand 6 states and 217 transitions. [2025-01-10 06:56:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 1053 flow [2025-01-10 06:56:07,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 997 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-01-10 06:56:07,921 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 646 flow [2025-01-10 06:56:07,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2025-01-10 06:56:07,921 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2025-01-10 06:56:07,921 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 646 flow [2025-01-10 06:56:07,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:07,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:07,922 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1] [2025-01-10 06:56:07,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 06:56:07,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:07,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1376003876, now seen corresponding path program 2 times [2025-01-10 06:56:07,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:07,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644283642] [2025-01-10 06:56:07,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:07,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:07,929 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-10 06:56:07,932 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-01-10 06:56:07,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:07,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-10 06:56:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644283642] [2025-01-10 06:56:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644283642] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290088852] [2025-01-10 06:56:07,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:07,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:07,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:07,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:07,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:56:08,005 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-10 06:56:08,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 23 statements. [2025-01-10 06:56:08,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:08,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:08,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:56:08,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-10 06:56:08,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-10 06:56:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290088852] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:08,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:56:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183704771] [2025-01-10 06:56:08,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:08,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:08,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:08,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:08,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 59 [2025-01-10 06:56:08,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 646 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:08,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:08,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 59 [2025-01-10 06:56:08,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:09,077 INFO L124 PetriNetUnfolderBase]: 7918/14961 cut-off events. [2025-01-10 06:56:09,077 INFO L125 PetriNetUnfolderBase]: For 21595/22806 co-relation queries the response was YES. [2025-01-10 06:56:09,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40160 conditions, 14961 events. 7918/14961 cut-off events. For 21595/22806 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 115169 event pairs, 6420 based on Foata normal form. 107/14553 useless extension candidates. Maximal degree in co-relation 40079. Up to 11139 conditions per place. [2025-01-10 06:56:09,385 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 48 selfloop transitions, 28 changer transitions 0/103 dead transitions. [2025-01-10 06:56:09,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 788 flow [2025-01-10 06:56:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-01-10 06:56:09,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49491525423728816 [2025-01-10 06:56:09,386 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 646 flow. Second operand 5 states and 146 transitions. [2025-01-10 06:56:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 788 flow [2025-01-10 06:56:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 726 flow, removed 13 selfloop flow, removed 11 redundant places. [2025-01-10 06:56:09,428 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 630 flow [2025-01-10 06:56:09,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=630, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2025-01-10 06:56:09,429 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2025-01-10 06:56:09,429 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 630 flow [2025-01-10 06:56:09,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:09,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:09,429 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:09,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:09,630 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,SelfDestructingSolverStorable15 [2025-01-10 06:56:09,630 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:09,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 626047567, now seen corresponding path program 1 times [2025-01-10 06:56:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:09,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405505480] [2025-01-10 06:56:09,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:09,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 06:56:09,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 06:56:09,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:09,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:09,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:09,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:09,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405505480] [2025-01-10 06:56:09,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405505480] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:09,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796680934] [2025-01-10 06:56:09,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:09,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:09,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:09,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:09,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:56:09,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-10 06:56:09,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-10 06:56:09,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:09,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:09,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:56:09,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:09,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796680934] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:09,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:56:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817710500] [2025-01-10 06:56:09,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:09,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:56:09,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:09,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:56:09,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:56:09,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:56:09,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 630 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:09,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:09,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:56:09,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:11,718 INFO L124 PetriNetUnfolderBase]: 13153/22838 cut-off events. [2025-01-10 06:56:11,719 INFO L125 PetriNetUnfolderBase]: For 26117/27557 co-relation queries the response was YES. [2025-01-10 06:56:11,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60217 conditions, 22838 events. 13153/22838 cut-off events. For 26117/27557 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 169809 event pairs, 3886 based on Foata normal form. 994/23520 useless extension candidates. Maximal degree in co-relation 45573. Up to 7811 conditions per place. [2025-01-10 06:56:11,909 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 296 selfloop transitions, 18 changer transitions 0/340 dead transitions. [2025-01-10 06:56:11,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 340 transitions, 2716 flow [2025-01-10 06:56:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:56:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:56:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 420 transitions. [2025-01-10 06:56:11,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711864406779661 [2025-01-10 06:56:11,911 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 630 flow. Second operand 10 states and 420 transitions. [2025-01-10 06:56:11,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 340 transitions, 2716 flow [2025-01-10 06:56:11,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 340 transitions, 2665 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:11,964 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 675 flow [2025-01-10 06:56:11,964 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=675, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2025-01-10 06:56:11,964 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2025-01-10 06:56:11,964 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 675 flow [2025-01-10 06:56:11,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:11,965 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:11,965 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:11,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:56:12,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:12,166 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:12,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1189721749, now seen corresponding path program 1 times [2025-01-10 06:56:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025525640] [2025-01-10 06:56:12,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:12,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 06:56:12,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 06:56:12,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:12,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 06:56:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025525640] [2025-01-10 06:56:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025525640] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606900535] [2025-01-10 06:56:12,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:12,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:12,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:12,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:56:12,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-10 06:56:12,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-10 06:56:12,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:12,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:12,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:56:12,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:12,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:56:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606900535] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:12,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:12,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-01-10 06:56:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978863086] [2025-01-10 06:56:12,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:12,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:56:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:12,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:56:12,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:56:12,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2025-01-10 06:56:12,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 675 flow. Second operand has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:12,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:12,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2025-01-10 06:56:12,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:14,849 INFO L124 PetriNetUnfolderBase]: 16370/26456 cut-off events. [2025-01-10 06:56:14,850 INFO L125 PetriNetUnfolderBase]: For 46579/46987 co-relation queries the response was YES. [2025-01-10 06:56:15,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78500 conditions, 26456 events. 16370/26456 cut-off events. For 46579/46987 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 180576 event pairs, 2903 based on Foata normal form. 481/26345 useless extension candidates. Maximal degree in co-relation 70045. Up to 9964 conditions per place. [2025-01-10 06:56:15,153 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 171 selfloop transitions, 35 changer transitions 65/293 dead transitions. [2025-01-10 06:56:15,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 2239 flow [2025-01-10 06:56:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:56:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:56:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2025-01-10 06:56:15,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.481555333998006 [2025-01-10 06:56:15,159 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 675 flow. Second operand 17 states and 483 transitions. [2025-01-10 06:56:15,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 2239 flow [2025-01-10 06:56:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 293 transitions, 2153 flow, removed 18 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:15,287 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 662 flow [2025-01-10 06:56:15,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=662, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2025-01-10 06:56:15,288 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2025-01-10 06:56:15,288 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 662 flow [2025-01-10 06:56:15,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.789473684210527) internal successors, (414), 19 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:15,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:15,288 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:15,294 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 [2025-01-10 06:56:15,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 06:56:15,489 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:15,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2091498649, now seen corresponding path program 1 times [2025-01-10 06:56:15,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:15,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416614417] [2025-01-10 06:56:15,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:15,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 06:56:15,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:56:15,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:15,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416614417] [2025-01-10 06:56:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416614417] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345587466] [2025-01-10 06:56:15,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:15,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:15,598 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:15,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:56:15,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-10 06:56:15,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:56:15,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:15,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:15,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:56:15,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:15,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345587466] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:15,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:56:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257226590] [2025-01-10 06:56:15,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:15,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:56:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:15,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:56:15,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:56:15,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-01-10 06:56:15,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 662 flow. Second operand has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:15,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:15,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-01-10 06:56:15,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:19,348 INFO L124 PetriNetUnfolderBase]: 22623/39138 cut-off events. [2025-01-10 06:56:19,349 INFO L125 PetriNetUnfolderBase]: For 64141/64923 co-relation queries the response was YES. [2025-01-10 06:56:19,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114782 conditions, 39138 events. 22623/39138 cut-off events. For 64141/64923 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 304817 event pairs, 4945 based on Foata normal form. 1134/39742 useless extension candidates. Maximal degree in co-relation 114666. Up to 11393 conditions per place. [2025-01-10 06:56:19,984 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 284 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2025-01-10 06:56:19,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 326 transitions, 2418 flow [2025-01-10 06:56:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:56:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:56:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2025-01-10 06:56:19,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796610169491526 [2025-01-10 06:56:19,985 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 662 flow. Second operand 10 states and 401 transitions. [2025-01-10 06:56:19,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 326 transitions, 2418 flow [2025-01-10 06:56:20,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 326 transitions, 2349 flow, removed 11 selfloop flow, removed 11 redundant places. [2025-01-10 06:56:20,072 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 703 flow [2025-01-10 06:56:20,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=703, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2025-01-10 06:56:20,073 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2025-01-10 06:56:20,073 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 703 flow [2025-01-10 06:56:20,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.75) internal successors, (321), 12 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:20,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:20,073 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:20,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:20,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:20,274 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:20,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash -584838584, now seen corresponding path program 1 times [2025-01-10 06:56:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:20,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340568803] [2025-01-10 06:56:20,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:20,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:20,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-01-10 06:56:20,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-01-10 06:56:20,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:20,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-10 06:56:20,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:20,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340568803] [2025-01-10 06:56:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340568803] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:20,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:56:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:56:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44447832] [2025-01-10 06:56:20,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:20,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:56:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:20,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:56:20,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:56:20,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2025-01-10 06:56:20,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:20,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:20,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2025-01-10 06:56:20,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:23,292 INFO L124 PetriNetUnfolderBase]: 20249/34732 cut-off events. [2025-01-10 06:56:23,293 INFO L125 PetriNetUnfolderBase]: For 64708/65507 co-relation queries the response was YES. [2025-01-10 06:56:23,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103963 conditions, 34732 events. 20249/34732 cut-off events. For 64708/65507 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 264323 event pairs, 8985 based on Foata normal form. 868/34765 useless extension candidates. Maximal degree in co-relation 103809. Up to 15019 conditions per place. [2025-01-10 06:56:23,599 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 138 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2025-01-10 06:56:23,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 172 transitions, 1341 flow [2025-01-10 06:56:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:56:23,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:56:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2025-01-10 06:56:23,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.690677966101695 [2025-01-10 06:56:23,601 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 703 flow. Second operand 4 states and 163 transitions. [2025-01-10 06:56:23,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 172 transitions, 1341 flow [2025-01-10 06:56:23,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1312 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-10 06:56:23,699 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 716 flow [2025-01-10 06:56:23,699 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=716, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2025-01-10 06:56:23,700 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 63 predicate places. [2025-01-10 06:56:23,700 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 716 flow [2025-01-10 06:56:23,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:23,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:23,700 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:23,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-10 06:56:23,700 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:23,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:23,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2139145662, now seen corresponding path program 2 times [2025-01-10 06:56:23,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:23,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580489326] [2025-01-10 06:56:23,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:23,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:23,706 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-10 06:56:23,709 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 42 statements. [2025-01-10 06:56:23,709 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:23,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:23,732 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-10 06:56:23,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:23,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580489326] [2025-01-10 06:56:23,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580489326] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:23,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778858055] [2025-01-10 06:56:23,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:56:23,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:23,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:23,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:56:23,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-10 06:56:23,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 42 statements. [2025-01-10 06:56:23,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:56:23,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:23,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:56:23,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-10 06:56:23,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-10 06:56:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778858055] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:23,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:56:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4634797] [2025-01-10 06:56:23,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:56:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:23,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:56:23,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:56:23,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2025-01-10 06:56:23,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 716 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:23,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:23,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2025-01-10 06:56:23,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:27,254 INFO L124 PetriNetUnfolderBase]: 22581/39798 cut-off events. [2025-01-10 06:56:27,255 INFO L125 PetriNetUnfolderBase]: For 79067/79798 co-relation queries the response was YES. [2025-01-10 06:56:27,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116697 conditions, 39798 events. 22581/39798 cut-off events. For 79067/79798 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 314923 event pairs, 6106 based on Foata normal form. 410/39751 useless extension candidates. Maximal degree in co-relation 116540. Up to 13473 conditions per place. [2025-01-10 06:56:27,854 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 137 selfloop transitions, 14 changer transitions 3/181 dead transitions. [2025-01-10 06:56:27,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 181 transitions, 1536 flow [2025-01-10 06:56:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:56:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:56:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2025-01-10 06:56:27,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6237288135593221 [2025-01-10 06:56:27,855 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 716 flow. Second operand 5 states and 184 transitions. [2025-01-10 06:56:27,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 181 transitions, 1536 flow [2025-01-10 06:56:27,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1508 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-01-10 06:56:27,984 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 722 flow [2025-01-10 06:56:27,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=722, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2025-01-10 06:56:27,985 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2025-01-10 06:56:27,985 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 722 flow [2025-01-10 06:56:27,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:27,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:27,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:27,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:28,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:28,186 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:28,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1787550492, now seen corresponding path program 1 times [2025-01-10 06:56:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149822594] [2025-01-10 06:56:28,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:28,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-10 06:56:28,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-10 06:56:28,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:28,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-10 06:56:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149822594] [2025-01-10 06:56:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149822594] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361758722] [2025-01-10 06:56:28,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:28,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:28,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:28,297 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:28,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 06:56:28,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-10 06:56:28,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-10 06:56:28,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:28,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:28,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 06:56:28,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:28,481 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:56:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361758722] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:56:28,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:56:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-01-10 06:56:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119620719] [2025-01-10 06:56:28,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:56:28,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:56:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:28,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:56:28,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:56:28,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2025-01-10 06:56:28,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 722 flow. Second operand has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:28,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:28,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2025-01-10 06:56:28,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:56:36,833 INFO L124 PetriNetUnfolderBase]: 56371/87631 cut-off events. [2025-01-10 06:56:36,833 INFO L125 PetriNetUnfolderBase]: For 252515/253657 co-relation queries the response was YES. [2025-01-10 06:56:37,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274914 conditions, 87631 events. 56371/87631 cut-off events. For 252515/253657 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 653552 event pairs, 4393 based on Foata normal form. 3012/90627 useless extension candidates. Maximal degree in co-relation 274759. Up to 13048 conditions per place. [2025-01-10 06:56:37,604 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 731 selfloop transitions, 62 changer transitions 24/828 dead transitions. [2025-01-10 06:56:37,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 828 transitions, 6888 flow [2025-01-10 06:56:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 06:56:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-10 06:56:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 943 transitions. [2025-01-10 06:56:37,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5708232445520581 [2025-01-10 06:56:37,606 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 722 flow. Second operand 28 states and 943 transitions. [2025-01-10 06:56:37,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 828 transitions, 6888 flow [2025-01-10 06:56:38,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 828 transitions, 6427 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:56:38,025 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 1274 flow [2025-01-10 06:56:38,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1274, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2025-01-10 06:56:38,025 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 104 predicate places. [2025-01-10 06:56:38,026 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 1274 flow [2025-01-10 06:56:38,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.157894736842106) internal successors, (421), 19 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:38,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:56:38,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:56:38,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 06:56:38,226 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,SelfDestructingSolverStorable21 [2025-01-10 06:56:38,227 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2025-01-10 06:56:38,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:56:38,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1545103975, now seen corresponding path program 1 times [2025-01-10 06:56:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:56:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704078714] [2025-01-10 06:56:38,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:56:38,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-10 06:56:38,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-10 06:56:38,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:38,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:38,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:56:38,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704078714] [2025-01-10 06:56:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704078714] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:56:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627298399] [2025-01-10 06:56:38,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:56:38,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:56:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:56:38,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:56:38,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 06:56:38,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-10 06:56:38,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-10 06:56:38,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:56:38,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:56:38,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 06:56:38,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:56:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-10 06:56:38,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:56:38,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627298399] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:56:38,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:56:38,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2025-01-10 06:56:38,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614922364] [2025-01-10 06:56:38,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:56:38,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 06:56:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:56:38,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 06:56:38,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-01-10 06:56:38,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2025-01-10 06:56:38,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 155 transitions, 1274 flow. Second operand has 9 states, 9 states have (on average 23.333333333333332) internal successors, (210), 9 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:56:38,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:56:38,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2025-01-10 06:56:38,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand