./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:27:39,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:27:39,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:27:39,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:27:39,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:27:39,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:27:39,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:27:39,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:27:39,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:27:39,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:27:39,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:27:39,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:27:39,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:27:39,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:27:39,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:27:39,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:27:39,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:27:39,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:27:39,229 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:27:39,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:39,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:27:39,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:27:39,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:27:39,231 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2025-03-04 15:27:39,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:27:39,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:27:39,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:27:39,567 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:27:39,567 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:27:39,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2025-03-04 15:27:40,721 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28fd8a7f7/f1b970a424b0403b9f3a6e750e44c0e1/FLAG24b0217a3 [2025-03-04 15:27:40,953 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:27:40,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2025-03-04 15:27:40,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28fd8a7f7/f1b970a424b0403b9f3a6e750e44c0e1/FLAG24b0217a3 [2025-03-04 15:27:40,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28fd8a7f7/f1b970a424b0403b9f3a6e750e44c0e1 [2025-03-04 15:27:40,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:27:40,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:27:40,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:40,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:27:40,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:27:40,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:40" (1/1) ... [2025-03-04 15:27:40,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aac1a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:40, skipping insertion in model container [2025-03-04 15:27:40,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:40" (1/1) ... [2025-03-04 15:27:40,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:27:41,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:41,160 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:27:41,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:41,193 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:27:41,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41 WrapperNode [2025-03-04 15:27:41,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:41,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:41,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:27:41,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:27:41,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,225 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 159 [2025-03-04 15:27:41,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:41,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:27:41,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:27:41,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:27:41,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,246 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 15:27:41,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,251 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:27:41,256 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:27:41,256 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:27:41,257 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:27:41,257 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (1/1) ... [2025-03-04 15:27:41,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:41,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:41,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:27:41,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:27:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:27:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:27:41,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:27:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:27:41,301 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:27:41,374 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:27:41,375 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:27:41,638 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:27:41,638 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:27:41,867 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:27:41,867 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:27:41,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:41 BoogieIcfgContainer [2025-03-04 15:27:41,868 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:27:41,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:27:41,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:27:41,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:27:41,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:27:40" (1/3) ... [2025-03-04 15:27:41,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3745b2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:41, skipping insertion in model container [2025-03-04 15:27:41,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:41" (2/3) ... [2025-03-04 15:27:41,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3745b2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:41, skipping insertion in model container [2025-03-04 15:27:41,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:41" (3/3) ... [2025-03-04 15:27:41,877 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2025-03-04 15:27:41,889 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:27:41,890 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue2.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2025-03-04 15:27:41,890 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:27:41,992 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:27:42,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 106 flow [2025-03-04 15:27:42,050 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2025-03-04 15:27:42,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:27:42,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 3/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2025-03-04 15:27:42,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 106 flow [2025-03-04 15:27:42,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 93 flow [2025-03-04 15:27:42,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:27:42,080 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;@73f44cfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:27:42,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-04 15:27:42,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:27:42,084 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:27:42,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:27:42,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:42,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:27:42,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:42,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 503569, now seen corresponding path program 1 times [2025-03-04 15:27:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879290201] [2025-03-04 15:27:42,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:42,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:27:42,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:27:42,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:42,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:42,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879290201] [2025-03-04 15:27:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879290201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:42,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308560114] [2025-03-04 15:27:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:42,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:42,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:42,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:42,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-04 15:27:42,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:42,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:42,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-04 15:27:42,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:42,527 INFO L124 PetriNetUnfolderBase]: 219/465 cut-off events. [2025-03-04 15:27:42,527 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-04 15:27:42,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 465 events. 219/465 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2592 event pairs, 182 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 805. Up to 377 conditions per place. [2025-03-04 15:27:42,536 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 26 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2025-03-04 15:27:42,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 151 flow [2025-03-04 15:27:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2025-03-04 15:27:42,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-04 15:27:42,548 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 93 flow. Second operand 4 states and 88 transitions. [2025-03-04 15:27:42,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 151 flow [2025-03-04 15:27:42,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:27:42,554 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 109 flow [2025-03-04 15:27:42,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2025-03-04 15:27:42,559 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2025-03-04 15:27:42,559 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 109 flow [2025-03-04 15:27:42,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:42,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:42,560 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:27:42,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:27:42,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:42,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:42,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2117340231, now seen corresponding path program 1 times [2025-03-04 15:27:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960351854] [2025-03-04 15:27:42,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:42,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:27:42,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:27:42,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:42,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:42,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960351854] [2025-03-04 15:27:42,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960351854] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:42,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313596512] [2025-03-04 15:27:42,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:42,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:42,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:42,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:42,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:27:42,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:27:42,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:27:42,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:42,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:42,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:42,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:42,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:42,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313596512] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:42,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:42,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:27:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462108049] [2025-03-04 15:27:42,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:42,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:42,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:42,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:42,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:42,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-04 15:27:42,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:42,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:42,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-04 15:27:42,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:42,957 INFO L124 PetriNetUnfolderBase]: 219/464 cut-off events. [2025-03-04 15:27:42,958 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-04 15:27:42,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 464 events. 219/464 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2606 event pairs, 182 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 847. Up to 372 conditions per place. [2025-03-04 15:27:42,961 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2025-03-04 15:27:42,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 163 flow [2025-03-04 15:27:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-04 15:27:42,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2025-03-04 15:27:42,964 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 109 flow. Second operand 6 states and 108 transitions. [2025-03-04 15:27:42,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 163 flow [2025-03-04 15:27:42,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:42,966 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2025-03-04 15:27:42,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2025-03-04 15:27:42,966 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2025-03-04 15:27:42,966 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2025-03-04 15:27:42,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:42,967 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:42,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:27:42,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:27:43,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:43,171 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:43,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2119728523, now seen corresponding path program 1 times [2025-03-04 15:27:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62180565] [2025-03-04 15:27:43,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:43,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:27:43,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:27:43,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:43,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62180565] [2025-03-04 15:27:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62180565] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:27:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612289082] [2025-03-04 15:27:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:43,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:27:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:43,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:27:43,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:27:43,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2025-03-04 15:27:43,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:43,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:43,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2025-03-04 15:27:43,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:43,506 INFO L124 PetriNetUnfolderBase]: 313/676 cut-off events. [2025-03-04 15:27:43,506 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-04 15:27:43,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 676 events. 313/676 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3676 event pairs, 244 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 956. Up to 418 conditions per place. [2025-03-04 15:27:43,511 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 5 changer transitions 2/66 dead transitions. [2025-03-04 15:27:43,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2025-03-04 15:27:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:27:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:27:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2025-03-04 15:27:43,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2025-03-04 15:27:43,513 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 5 states and 126 transitions. [2025-03-04 15:27:43,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2025-03-04 15:27:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 262 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:43,515 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2025-03-04 15:27:43,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2025-03-04 15:27:43,516 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-04 15:27:43,516 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2025-03-04 15:27:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:43,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:43,516 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:27:43,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:27:43,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:43,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1213038139, now seen corresponding path program 1 times [2025-03-04 15:27:43,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:43,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788784648] [2025-03-04 15:27:43,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:43,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:43,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:27:43,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:27:43,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:43,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:43,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788784648] [2025-03-04 15:27:43,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788784648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:43,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699615596] [2025-03-04 15:27:43,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:43,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:43,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:43,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:27:43,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:27:43,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:27:43,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:43,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:43,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:43,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:43,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699615596] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:43,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:27:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348487906] [2025-03-04 15:27:43,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:43,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:27:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:43,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:27:43,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:27:43,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-04 15:27:43,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:43,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:43,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-04 15:27:43,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:43,899 INFO L124 PetriNetUnfolderBase]: 290/642 cut-off events. [2025-03-04 15:27:43,899 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-03-04 15:27:43,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 642 events. 290/642 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3813 event pairs, 244 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 936. Up to 510 conditions per place. [2025-03-04 15:27:43,903 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2025-03-04 15:27:43,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 229 flow [2025-03-04 15:27:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2025-03-04 15:27:43,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2025-03-04 15:27:43,905 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 10 states and 171 transitions. [2025-03-04 15:27:43,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 229 flow [2025-03-04 15:27:43,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:43,909 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 188 flow [2025-03-04 15:27:43,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2025-03-04 15:27:43,910 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2025-03-04 15:27:43,911 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 188 flow [2025-03-04 15:27:43,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:43,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:43,911 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:43,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:44,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:27:44,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:44,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1244667767, now seen corresponding path program 1 times [2025-03-04 15:27:44,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382346239] [2025-03-04 15:27:44,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:44,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:27:44,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:27:44,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:44,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:44,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:44,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382346239] [2025-03-04 15:27:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382346239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:44,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:27:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447462672] [2025-03-04 15:27:44,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:44,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:27:44,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:44,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:27:44,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:27:44,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2025-03-04 15:27:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:44,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:44,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2025-03-04 15:27:44,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:44,307 INFO L124 PetriNetUnfolderBase]: 268/556 cut-off events. [2025-03-04 15:27:44,307 INFO L125 PetriNetUnfolderBase]: For 123/140 co-relation queries the response was YES. [2025-03-04 15:27:44,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 556 events. 268/556 cut-off events. For 123/140 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2998 event pairs, 219 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 1137. Up to 425 conditions per place. [2025-03-04 15:27:44,310 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 35 selfloop transitions, 2 changer transitions 14/62 dead transitions. [2025-03-04 15:27:44,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 325 flow [2025-03-04 15:27:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:27:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:27:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-03-04 15:27:44,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2025-03-04 15:27:44,311 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 188 flow. Second operand 5 states and 113 transitions. [2025-03-04 15:27:44,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 325 flow [2025-03-04 15:27:44,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:44,313 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 170 flow [2025-03-04 15:27:44,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2025-03-04 15:27:44,314 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-03-04 15:27:44,314 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 170 flow [2025-03-04 15:27:44,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:44,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:44,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:44,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:27:44,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:44,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1795919000, now seen corresponding path program 1 times [2025-03-04 15:27:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:44,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715829325] [2025-03-04 15:27:44,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:44,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:44,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:27:44,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:27:44,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:44,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:27:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715829325] [2025-03-04 15:27:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715829325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:27:44,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343866750] [2025-03-04 15:27:44,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:44,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:44,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:44,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:44,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:44,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:44,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:44,548 INFO L124 PetriNetUnfolderBase]: 306/662 cut-off events. [2025-03-04 15:27:44,548 INFO L125 PetriNetUnfolderBase]: For 108/139 co-relation queries the response was YES. [2025-03-04 15:27:44,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1394 conditions, 662 events. 306/662 cut-off events. For 108/139 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3815 event pairs, 94 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 1370. Up to 383 conditions per place. [2025-03-04 15:27:44,552 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 47 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2025-03-04 15:27:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 309 flow [2025-03-04 15:27:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2025-03-04 15:27:44,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2025-03-04 15:27:44,554 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 170 flow. Second operand 3 states and 88 transitions. [2025-03-04 15:27:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 309 flow [2025-03-04 15:27:44,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 285 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-04 15:27:44,558 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 179 flow [2025-03-04 15:27:44,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2025-03-04 15:27:44,559 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-04 15:27:44,560 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 179 flow [2025-03-04 15:27:44,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:44,560 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:44,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:44,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:27:44,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:44,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:44,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1795918996, now seen corresponding path program 1 times [2025-03-04 15:27:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:44,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568348380] [2025-03-04 15:27:44,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:44,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:44,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:27:44,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:27:44,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:44,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568348380] [2025-03-04 15:27:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568348380] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:44,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188480053] [2025-03-04 15:27:44,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:44,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:44,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:27:44,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:27:44,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:27:44,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:44,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:44,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 15:27:44,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:44,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:27:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:44,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:44,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:27:44,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-04 15:27:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188480053] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:45,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:45,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:27:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881741172] [2025-03-04 15:27:45,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:45,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:27:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:45,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:27:45,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:27:45,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:45,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 179 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:45,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:45,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:45,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:45,257 INFO L124 PetriNetUnfolderBase]: 413/876 cut-off events. [2025-03-04 15:27:45,258 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2025-03-04 15:27:45,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 876 events. 413/876 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5367 event pairs, 108 based on Foata normal form. 0/662 useless extension candidates. Maximal degree in co-relation 1827. Up to 262 conditions per place. [2025-03-04 15:27:45,262 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 52 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2025-03-04 15:27:45,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 396 flow [2025-03-04 15:27:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:27:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:27:45,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2025-03-04 15:27:45,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-04 15:27:45,263 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 179 flow. Second operand 8 states and 176 transitions. [2025-03-04 15:27:45,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 396 flow [2025-03-04 15:27:45,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:45,265 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 251 flow [2025-03-04 15:27:45,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2025-03-04 15:27:45,265 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2025-03-04 15:27:45,266 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 251 flow [2025-03-04 15:27:45,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:45,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:45,266 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:45,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:45,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:45,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:45,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1795918997, now seen corresponding path program 1 times [2025-03-04 15:27:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131984663] [2025-03-04 15:27:45,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:45,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:45,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:27:45,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:27:45,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:45,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:45,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:45,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131984663] [2025-03-04 15:27:45,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131984663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:45,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896596548] [2025-03-04 15:27:45,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:45,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:45,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:45,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:45,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:27:45,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:27:45,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:27:45,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:45,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:45,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-04 15:27:45,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:45,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:27:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:45,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:45,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-04 15:27:45,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:27:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:45,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896596548] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:45,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:45,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-03-04 15:27:45,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744310297] [2025-03-04 15:27:45,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:45,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:27:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:45,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:27:45,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:27:45,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:45,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 251 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:45,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:45,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:45,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:46,030 INFO L124 PetriNetUnfolderBase]: 375/802 cut-off events. [2025-03-04 15:27:46,030 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2025-03-04 15:27:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 802 events. 375/802 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4824 event pairs, 92 based on Foata normal form. 26/642 useless extension candidates. Maximal degree in co-relation 2042. Up to 262 conditions per place. [2025-03-04 15:27:46,037 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 51 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2025-03-04 15:27:46,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 443 flow [2025-03-04 15:27:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:27:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:27:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2025-03-04 15:27:46,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2025-03-04 15:27:46,041 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 251 flow. Second operand 8 states and 175 transitions. [2025-03-04 15:27:46,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 443 flow [2025-03-04 15:27:46,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 433 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:27:46,043 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 267 flow [2025-03-04 15:27:46,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=267, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2025-03-04 15:27:46,044 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2025-03-04 15:27:46,045 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 267 flow [2025-03-04 15:27:46,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:46,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:46,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:46,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:46,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:46,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:46,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -698677157, now seen corresponding path program 1 times [2025-03-04 15:27:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983639099] [2025-03-04 15:27:46,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:46,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:46,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:46,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:46,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:46,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:27:46,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:46,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983639099] [2025-03-04 15:27:46,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983639099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210937625] [2025-03-04 15:27:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:46,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:46,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:46,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:46,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:46,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:27:46,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:46,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:46,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:27:46,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:46,481 INFO L124 PetriNetUnfolderBase]: 479/919 cut-off events. [2025-03-04 15:27:46,481 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2025-03-04 15:27:46,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 919 events. 479/919 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5093 event pairs, 190 based on Foata normal form. 36/771 useless extension candidates. Maximal degree in co-relation 2531. Up to 582 conditions per place. [2025-03-04 15:27:46,486 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 66 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2025-03-04 15:27:46,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 473 flow [2025-03-04 15:27:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-04 15:27:46,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2025-03-04 15:27:46,488 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 267 flow. Second operand 4 states and 106 transitions. [2025-03-04 15:27:46,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 473 flow [2025-03-04 15:27:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 460 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:46,491 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 275 flow [2025-03-04 15:27:46,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2025-03-04 15:27:46,492 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2025-03-04 15:27:46,493 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 275 flow [2025-03-04 15:27:46,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:46,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:46,493 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:46,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:27:46,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:46,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -698641407, now seen corresponding path program 1 times [2025-03-04 15:27:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579563748] [2025-03-04 15:27:46,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:46,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:46,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:46,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:46,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579563748] [2025-03-04 15:27:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579563748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090999576] [2025-03-04 15:27:46,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:46,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:46,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:46,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:27:46,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:46,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:46,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:46,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:46,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 15:27:46,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:46,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:27:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:46,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:46,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-03-04 15:27:46,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:27:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090999576] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:46,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-04 15:27:46,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867092462] [2025-03-04 15:27:46,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:46,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 15:27:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:46,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 15:27:46,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-04 15:27:46,808 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:46,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 275 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:46,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:46,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:46,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:47,040 INFO L124 PetriNetUnfolderBase]: 521/1113 cut-off events. [2025-03-04 15:27:47,040 INFO L125 PetriNetUnfolderBase]: For 1270/1270 co-relation queries the response was YES. [2025-03-04 15:27:47,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 1113 events. 521/1113 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6937 event pairs, 127 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 3143. Up to 335 conditions per place. [2025-03-04 15:27:47,046 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2025-03-04 15:27:47,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 661 flow [2025-03-04 15:27:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:27:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:27:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2025-03-04 15:27:47,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2025-03-04 15:27:47,048 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 275 flow. Second operand 8 states and 174 transitions. [2025-03-04 15:27:47,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 661 flow [2025-03-04 15:27:47,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 643 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:47,050 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 344 flow [2025-03-04 15:27:47,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2025-03-04 15:27:47,051 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-03-04 15:27:47,051 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 344 flow [2025-03-04 15:27:47,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:47,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:47,052 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:47,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 15:27:47,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 15:27:47,252 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:47,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash -698641406, now seen corresponding path program 1 times [2025-03-04 15:27:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391136862] [2025-03-04 15:27:47,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:47,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:47,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:47,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:47,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:47,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:47,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391136862] [2025-03-04 15:27:47,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391136862] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:47,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184472695] [2025-03-04 15:27:47,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:47,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:47,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:47,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:47,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:27:47,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:47,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:47,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:47,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:47,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 15:27:47,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:47,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:27:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:47,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:47,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:27:47,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2025-03-04 15:27:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:47,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184472695] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:47,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-03-04 15:27:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986885070] [2025-03-04 15:27:47,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:47,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:27:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:47,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:27:47,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:27:47,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:47,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 344 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:47,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:47,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:47,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:47,840 INFO L124 PetriNetUnfolderBase]: 486/1054 cut-off events. [2025-03-04 15:27:47,840 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2025-03-04 15:27:47,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1054 events. 486/1054 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6525 event pairs, 127 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 3361. Up to 335 conditions per place. [2025-03-04 15:27:47,847 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 64 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2025-03-04 15:27:47,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 694 flow [2025-03-04 15:27:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:27:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:27:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2025-03-04 15:27:47,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2025-03-04 15:27:47,848 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 344 flow. Second operand 8 states and 173 transitions. [2025-03-04 15:27:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 694 flow [2025-03-04 15:27:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 684 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:27:47,851 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 360 flow [2025-03-04 15:27:47,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=360, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2025-03-04 15:27:47,852 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2025-03-04 15:27:47,852 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 360 flow [2025-03-04 15:27:47,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:47,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:47,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:47,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:48,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:48,054 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:48,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:48,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1379472792, now seen corresponding path program 1 times [2025-03-04 15:27:48,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:48,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184322634] [2025-03-04 15:27:48,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:48,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:27:48,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:27:48,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:48,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:27:48,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184322634] [2025-03-04 15:27:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184322634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:48,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:48,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403364332] [2025-03-04 15:27:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:48,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:48,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:48,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:48,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:27:48,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:48,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:27:48,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:48,265 INFO L124 PetriNetUnfolderBase]: 642/1164 cut-off events. [2025-03-04 15:27:48,266 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2025-03-04 15:27:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4247 conditions, 1164 events. 642/1164 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6659 event pairs, 330 based on Foata normal form. 50/970 useless extension candidates. Maximal degree in co-relation 4209. Up to 795 conditions per place. [2025-03-04 15:27:48,272 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 79 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2025-03-04 15:27:48,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 724 flow [2025-03-04 15:27:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-03-04 15:27:48,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2025-03-04 15:27:48,274 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 360 flow. Second operand 4 states and 104 transitions. [2025-03-04 15:27:48,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 724 flow [2025-03-04 15:27:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 711 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:48,279 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 368 flow [2025-03-04 15:27:48,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2025-03-04 15:27:48,279 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2025-03-04 15:27:48,279 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 368 flow [2025-03-04 15:27:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:48,280 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:48,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:27:48,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:48,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash -888703360, now seen corresponding path program 1 times [2025-03-04 15:27:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473072273] [2025-03-04 15:27:48,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:48,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:48,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:48,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:48,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:27:48,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:48,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473072273] [2025-03-04 15:27:48,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473072273] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:48,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:48,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556121185] [2025-03-04 15:27:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:48,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:48,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:48,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:48,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:48,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:48,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:48,443 INFO L124 PetriNetUnfolderBase]: 367/697 cut-off events. [2025-03-04 15:27:48,443 INFO L125 PetriNetUnfolderBase]: For 1671/1671 co-relation queries the response was YES. [2025-03-04 15:27:48,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 697 events. 367/697 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3607 event pairs, 274 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 2680. Up to 611 conditions per place. [2025-03-04 15:27:48,447 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 43 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2025-03-04 15:27:48,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 426 flow [2025-03-04 15:27:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-04 15:27:48,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2025-03-04 15:27:48,448 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 368 flow. Second operand 3 states and 70 transitions. [2025-03-04 15:27:48,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 426 flow [2025-03-04 15:27:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:48,452 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 334 flow [2025-03-04 15:27:48,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2025-03-04 15:27:48,453 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-04 15:27:48,453 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 334 flow [2025-03-04 15:27:48,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:48,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:48,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:27:48,454 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:48,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash -888703359, now seen corresponding path program 1 times [2025-03-04 15:27:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414749357] [2025-03-04 15:27:48,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:48,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:48,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:48,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:48,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:27:48,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:48,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414749357] [2025-03-04 15:27:48,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414749357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:48,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:48,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504699442] [2025-03-04 15:27:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:48,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:48,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:48,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:48,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:48,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2025-03-04 15:27:48,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:48,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2025-03-04 15:27:48,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:48,580 INFO L124 PetriNetUnfolderBase]: 266/522 cut-off events. [2025-03-04 15:27:48,580 INFO L125 PetriNetUnfolderBase]: For 1265/1265 co-relation queries the response was YES. [2025-03-04 15:27:48,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1922 conditions, 522 events. 266/522 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2434 event pairs, 187 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 1901. Up to 444 conditions per place. [2025-03-04 15:27:48,583 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-03-04 15:27:48,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 384 flow [2025-03-04 15:27:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:48,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-03-04 15:27:48,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2025-03-04 15:27:48,585 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 334 flow. Second operand 3 states and 68 transitions. [2025-03-04 15:27:48,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 384 flow [2025-03-04 15:27:48,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:48,587 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 305 flow [2025-03-04 15:27:48,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-03-04 15:27:48,588 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2025-03-04 15:27:48,588 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 305 flow [2025-03-04 15:27:48,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:48,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:48,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 15:27:48,589 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:48,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash -879201474, now seen corresponding path program 1 times [2025-03-04 15:27:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:48,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558502269] [2025-03-04 15:27:48,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:48,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:48,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:48,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:48,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558502269] [2025-03-04 15:27:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558502269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528340182] [2025-03-04 15:27:48,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:48,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:48,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:27:48,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:48,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:48,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:48,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:48,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:27:48,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:48,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:48,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528340182] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:48,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:48,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-04 15:27:48,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931541909] [2025-03-04 15:27:48,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:48,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 15:27:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:48,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 15:27:48,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-04 15:27:48,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:27:48,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:48,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:48,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:27:48,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:49,293 INFO L124 PetriNetUnfolderBase]: 651/1246 cut-off events. [2025-03-04 15:27:49,294 INFO L125 PetriNetUnfolderBase]: For 2568/2568 co-relation queries the response was YES. [2025-03-04 15:27:49,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 1246 events. 651/1246 cut-off events. For 2568/2568 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6754 event pairs, 383 based on Foata normal form. 18/1234 useless extension candidates. Maximal degree in co-relation 4322. Up to 716 conditions per place. [2025-03-04 15:27:49,301 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 16 changer transitions 8/114 dead transitions. [2025-03-04 15:27:49,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 853 flow [2025-03-04 15:27:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2025-03-04 15:27:49,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3630434782608696 [2025-03-04 15:27:49,302 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 305 flow. Second operand 10 states and 167 transitions. [2025-03-04 15:27:49,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 853 flow [2025-03-04 15:27:49,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:49,306 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 393 flow [2025-03-04 15:27:49,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2025-03-04 15:27:49,307 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2025-03-04 15:27:49,307 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 393 flow [2025-03-04 15:27:49,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:49,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:49,307 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-04 15:27:49,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:49,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:49,510 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:49,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1433836593, now seen corresponding path program 2 times [2025-03-04 15:27:49,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:49,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33718407] [2025-03-04 15:27:49,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:49,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:49,517 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:27:49,520 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:27:49,520 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:49,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33718407] [2025-03-04 15:27:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33718407] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212964650] [2025-03-04 15:27:49,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:49,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:49,562 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:49,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:27:49,609 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:27:49,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:27:49,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:49,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:49,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:27:49,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:49,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212964650] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:49,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:49,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-04 15:27:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526727987] [2025-03-04 15:27:49,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:49,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:49,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:49,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:49,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-03-04 15:27:49,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:49,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-03-04 15:27:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:49,778 INFO L124 PetriNetUnfolderBase]: 425/901 cut-off events. [2025-03-04 15:27:49,778 INFO L125 PetriNetUnfolderBase]: For 2820/2847 co-relation queries the response was YES. [2025-03-04 15:27:49,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3437 conditions, 901 events. 425/901 cut-off events. For 2820/2847 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4881 event pairs, 302 based on Foata normal form. 16/858 useless extension candidates. Maximal degree in co-relation 3410. Up to 707 conditions per place. [2025-03-04 15:27:49,785 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2025-03-04 15:27:49,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 58 transitions, 471 flow [2025-03-04 15:27:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2025-03-04 15:27:49,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40217391304347827 [2025-03-04 15:27:49,786 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 393 flow. Second operand 4 states and 74 transitions. [2025-03-04 15:27:49,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 58 transitions, 471 flow [2025-03-04 15:27:49,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 444 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-04 15:27:49,791 INFO L231 Difference]: Finished difference. Result has 79 places, 58 transitions, 386 flow [2025-03-04 15:27:49,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=79, PETRI_TRANSITIONS=58} [2025-03-04 15:27:49,792 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-04 15:27:49,792 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 58 transitions, 386 flow [2025-03-04 15:27:49,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:49,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:49,792 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:49,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:49,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 15:27:49,993 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:49,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1626377153, now seen corresponding path program 1 times [2025-03-04 15:27:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189631440] [2025-03-04 15:27:49,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:49,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:50,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:27:50,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:27:50,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:50,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:50,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:50,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189631440] [2025-03-04 15:27:50,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189631440] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:50,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194644319] [2025-03-04 15:27:50,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:50,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:50,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:50,097 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:50,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:27:50,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:27:50,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:27:50,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:50,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:50,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:27:50,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:50,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194644319] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:50,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-04 15:27:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693467482] [2025-03-04 15:27:50,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 15:27:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:50,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 15:27:50,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2025-03-04 15:27:50,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:27:50,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 58 transitions, 386 flow. Second operand has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:27:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:50,751 INFO L124 PetriNetUnfolderBase]: 564/1014 cut-off events. [2025-03-04 15:27:50,751 INFO L125 PetriNetUnfolderBase]: For 2980/3022 co-relation queries the response was YES. [2025-03-04 15:27:50,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1014 events. 564/1014 cut-off events. For 2980/3022 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4975 event pairs, 356 based on Foata normal form. 24/1031 useless extension candidates. Maximal degree in co-relation 3891. Up to 706 conditions per place. [2025-03-04 15:27:50,755 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 34 selfloop transitions, 10 changer transitions 43/95 dead transitions. [2025-03-04 15:27:50,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 95 transitions, 791 flow [2025-03-04 15:27:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-04 15:27:50,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2025-03-04 15:27:50,757 INFO L175 Difference]: Start difference. First operand has 79 places, 58 transitions, 386 flow. Second operand 10 states and 155 transitions. [2025-03-04 15:27:50,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 95 transitions, 791 flow [2025-03-04 15:27:50,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 761 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:27:50,761 INFO L231 Difference]: Finished difference. Result has 89 places, 52 transitions, 324 flow [2025-03-04 15:27:50,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=89, PETRI_TRANSITIONS=52} [2025-03-04 15:27:50,762 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2025-03-04 15:27:50,762 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 52 transitions, 324 flow [2025-03-04 15:27:50,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:50,762 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:50,763 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:50,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 15:27:50,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 15:27:50,964 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:50,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 578345032, now seen corresponding path program 2 times [2025-03-04 15:27:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:50,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884141348] [2025-03-04 15:27:50,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:50,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-04 15:27:50,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:50,978 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:50,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884141348] [2025-03-04 15:27:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884141348] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214053257] [2025-03-04 15:27:51,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:51,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:51,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:51,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:27:51,304 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-04 15:27:51,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:51,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:51,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:51,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 15:27:51,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:51,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:27:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:51,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:51,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:27:51,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:27:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:51,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214053257] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:51,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:51,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-04 15:27:51,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073650574] [2025-03-04 15:27:51,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:51,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 15:27:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:51,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 15:27:51,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2025-03-04 15:27:51,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:27:51,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 52 transitions, 324 flow. Second operand has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:51,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:51,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:27:51,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:53,006 INFO L124 PetriNetUnfolderBase]: 1258/2280 cut-off events. [2025-03-04 15:27:53,006 INFO L125 PetriNetUnfolderBase]: For 6204/6265 co-relation queries the response was YES. [2025-03-04 15:27:53,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 2280 events. 1258/2280 cut-off events. For 6204/6265 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 13095 event pairs, 157 based on Foata normal form. 54/2314 useless extension candidates. Maximal degree in co-relation 8614. Up to 340 conditions per place. [2025-03-04 15:27:53,019 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 226 selfloop transitions, 33 changer transitions 0/267 dead transitions. [2025-03-04 15:27:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 267 transitions, 2191 flow [2025-03-04 15:27:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-04 15:27:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-04 15:27:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 423 transitions. [2025-03-04 15:27:53,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38315217391304346 [2025-03-04 15:27:53,022 INFO L175 Difference]: Start difference. First operand has 89 places, 52 transitions, 324 flow. Second operand 24 states and 423 transitions. [2025-03-04 15:27:53,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 267 transitions, 2191 flow [2025-03-04 15:27:53,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 267 transitions, 2003 flow, removed 84 selfloop flow, removed 13 redundant places. [2025-03-04 15:27:53,030 INFO L231 Difference]: Finished difference. Result has 96 places, 69 transitions, 481 flow [2025-03-04 15:27:53,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=96, PETRI_TRANSITIONS=69} [2025-03-04 15:27:53,030 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2025-03-04 15:27:53,030 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 69 transitions, 481 flow [2025-03-04 15:27:53,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.56) internal successors, (264), 25 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:53,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:53,031 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:53,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 15:27:53,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:27:53,235 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:53,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash 578345031, now seen corresponding path program 1 times [2025-03-04 15:27:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432865233] [2025-03-04 15:27:53,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:53,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:27:53,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:53,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:53,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:53,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432865233] [2025-03-04 15:27:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432865233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168139221] [2025-03-04 15:27:53,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:53,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:53,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:53,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 15:27:53,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:27:53,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:53,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:53,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:53,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 15:27:53,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:53,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:27:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:53,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:53,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:27:53,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:27:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168139221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:53,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:53,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-04 15:27:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102947898] [2025-03-04 15:27:53,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:53,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:27:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:53,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:27:53,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:27:53,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:27:53,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 69 transitions, 481 flow. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:53,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:53,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:27:53,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:54,282 INFO L124 PetriNetUnfolderBase]: 1032/1944 cut-off events. [2025-03-04 15:27:54,282 INFO L125 PetriNetUnfolderBase]: For 6353/6366 co-relation queries the response was YES. [2025-03-04 15:27:54,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 1944 events. 1032/1944 cut-off events. For 6353/6366 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11204 event pairs, 166 based on Foata normal form. 49/1962 useless extension candidates. Maximal degree in co-relation 7561. Up to 502 conditions per place. [2025-03-04 15:27:54,294 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 106 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2025-03-04 15:27:54,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 145 transitions, 1190 flow [2025-03-04 15:27:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:27:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:27:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2025-03-04 15:27:54,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2025-03-04 15:27:54,296 INFO L175 Difference]: Start difference. First operand has 96 places, 69 transitions, 481 flow. Second operand 14 states and 233 transitions. [2025-03-04 15:27:54,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 145 transitions, 1190 flow [2025-03-04 15:27:54,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 1133 flow, removed 9 selfloop flow, removed 9 redundant places. [2025-03-04 15:27:54,303 INFO L231 Difference]: Finished difference. Result has 102 places, 70 transitions, 519 flow [2025-03-04 15:27:54,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=519, PETRI_PLACES=102, PETRI_TRANSITIONS=70} [2025-03-04 15:27:54,303 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2025-03-04 15:27:54,303 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 70 transitions, 519 flow [2025-03-04 15:27:54,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:54,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:54,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:54,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:54,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:54,506 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:54,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1083523383, now seen corresponding path program 2 times [2025-03-04 15:27:54,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064826487] [2025-03-04 15:27:54,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:54,513 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 15:27:54,519 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:54,519 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:54,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:54,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064826487] [2025-03-04 15:27:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064826487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358340300] [2025-03-04 15:27:54,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:54,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:54,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:54,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 15:27:54,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-04 15:27:54,835 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:54,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:27:54,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:54,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-04 15:27:54,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:54,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:27:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:54,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:55,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:27:55,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:27:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358340300] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:55,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2025-03-04 15:27:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610138658] [2025-03-04 15:27:55,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:55,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 15:27:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:55,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 15:27:55,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2025-03-04 15:27:55,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:27:55,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 70 transitions, 519 flow. Second operand has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:55,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:27:55,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:56,219 INFO L124 PetriNetUnfolderBase]: 1592/2773 cut-off events. [2025-03-04 15:27:56,219 INFO L125 PetriNetUnfolderBase]: For 13758/13797 co-relation queries the response was YES. [2025-03-04 15:27:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11848 conditions, 2773 events. 1592/2773 cut-off events. For 13758/13797 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 16129 event pairs, 224 based on Foata normal form. 101/2858 useless extension candidates. Maximal degree in co-relation 11822. Up to 432 conditions per place. [2025-03-04 15:27:56,235 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 260 selfloop transitions, 33 changer transitions 3/308 dead transitions. [2025-03-04 15:27:56,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 308 transitions, 3188 flow [2025-03-04 15:27:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-04 15:27:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-04 15:27:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 401 transitions. [2025-03-04 15:27:56,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3632246376811594 [2025-03-04 15:27:56,237 INFO L175 Difference]: Start difference. First operand has 102 places, 70 transitions, 519 flow. Second operand 24 states and 401 transitions. [2025-03-04 15:27:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 308 transitions, 3188 flow [2025-03-04 15:27:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 308 transitions, 2870 flow, removed 25 selfloop flow, removed 13 redundant places. [2025-03-04 15:27:56,246 INFO L231 Difference]: Finished difference. Result has 117 places, 87 transitions, 663 flow [2025-03-04 15:27:56,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=663, PETRI_PLACES=117, PETRI_TRANSITIONS=87} [2025-03-04 15:27:56,247 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-04 15:27:56,247 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 87 transitions, 663 flow [2025-03-04 15:27:56,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.8) internal successors, (270), 25 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:56,247 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:56,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:56,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:56,452 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:56,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1083523382, now seen corresponding path program 1 times [2025-03-04 15:27:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:56,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714068429] [2025-03-04 15:27:56,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:56,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:27:56,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:56,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714068429] [2025-03-04 15:27:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714068429] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320438004] [2025-03-04 15:27:56,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:56,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:56,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:56,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 15:27:56,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:27:56,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:56,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-04 15:27:56,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:56,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:27:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:56,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:27:56,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:27:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320438004] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:56,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:56,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-03-04 15:27:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064823448] [2025-03-04 15:27:56,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:56,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 15:27:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:56,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 15:27:56,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2025-03-04 15:27:57,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:27:57,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 87 transitions, 663 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:57,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:27:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:57,561 INFO L124 PetriNetUnfolderBase]: 1312/2453 cut-off events. [2025-03-04 15:27:57,561 INFO L125 PetriNetUnfolderBase]: For 11516/11548 co-relation queries the response was YES. [2025-03-04 15:27:57,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10630 conditions, 2453 events. 1312/2453 cut-off events. For 11516/11548 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 14617 event pairs, 268 based on Foata normal form. 75/2516 useless extension candidates. Maximal degree in co-relation 10601. Up to 692 conditions per place. [2025-03-04 15:27:57,577 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 182 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2025-03-04 15:27:57,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 225 transitions, 2235 flow [2025-03-04 15:27:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:27:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:27:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2025-03-04 15:27:57,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35248447204968947 [2025-03-04 15:27:57,581 INFO L175 Difference]: Start difference. First operand has 117 places, 87 transitions, 663 flow. Second operand 14 states and 227 transitions. [2025-03-04 15:27:57,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 225 transitions, 2235 flow [2025-03-04 15:27:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 225 transitions, 2178 flow, removed 7 selfloop flow, removed 10 redundant places. [2025-03-04 15:27:57,593 INFO L231 Difference]: Finished difference. Result has 122 places, 88 transitions, 701 flow [2025-03-04 15:27:57,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=701, PETRI_PLACES=122, PETRI_TRANSITIONS=88} [2025-03-04 15:27:57,594 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-04 15:27:57,594 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 88 transitions, 701 flow [2025-03-04 15:27:57,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:57,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:57,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 15:27:57,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-04 15:27:57,799 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:57,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:57,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1738814286, now seen corresponding path program 1 times [2025-03-04 15:27:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974874389] [2025-03-04 15:27:57,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:57,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:27:57,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:57,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:57,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974874389] [2025-03-04 15:27:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974874389] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890372438] [2025-03-04 15:27:57,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:57,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:57,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:57,854 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:57,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 15:27:57,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:27:57,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:27:57,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:57,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:57,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:57,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:57,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890372438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:57,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:57,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:27:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694820850] [2025-03-04 15:27:57,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:57,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:57,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:57,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:57,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:27:57,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 88 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:57,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:27:57,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:58,304 INFO L124 PetriNetUnfolderBase]: 1179/2354 cut-off events. [2025-03-04 15:27:58,305 INFO L125 PetriNetUnfolderBase]: For 13474/13493 co-relation queries the response was YES. [2025-03-04 15:27:58,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 2354 events. 1179/2354 cut-off events. For 13474/13493 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 14458 event pairs, 106 based on Foata normal form. 107/2441 useless extension candidates. Maximal degree in co-relation 10457. Up to 675 conditions per place. [2025-03-04 15:27:58,326 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 156 selfloop transitions, 19 changer transitions 0/189 dead transitions. [2025-03-04 15:27:58,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 189 transitions, 2031 flow [2025-03-04 15:27:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2025-03-04 15:27:58,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2025-03-04 15:27:58,330 INFO L175 Difference]: Start difference. First operand has 122 places, 88 transitions, 701 flow. Second operand 6 states and 136 transitions. [2025-03-04 15:27:58,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 189 transitions, 2031 flow [2025-03-04 15:27:58,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 189 transitions, 1871 flow, removed 10 selfloop flow, removed 12 redundant places. [2025-03-04 15:27:58,347 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 687 flow [2025-03-04 15:27:58,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2025-03-04 15:27:58,348 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2025-03-04 15:27:58,348 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 687 flow [2025-03-04 15:27:58,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:58,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:58,348 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:58,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 15:27:58,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:58,549 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:58,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1931331514, now seen corresponding path program 1 times [2025-03-04 15:27:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209279974] [2025-03-04 15:27:58,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:58,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:27:58,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:27:58,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:58,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209279974] [2025-03-04 15:27:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209279974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660996776] [2025-03-04 15:27:58,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:58,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:58,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:58,591 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:58,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 15:27:58,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:27:58,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:27:58,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:58,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:58,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:58,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:58,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:58,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660996776] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:58,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:58,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:27:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402972975] [2025-03-04 15:27:58,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:58,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:27:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:58,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:27:58,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:27:58,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:27:58,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:58,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:58,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:27:58,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:59,174 INFO L124 PetriNetUnfolderBase]: 1831/3643 cut-off events. [2025-03-04 15:27:59,174 INFO L125 PetriNetUnfolderBase]: For 20312/20356 co-relation queries the response was YES. [2025-03-04 15:27:59,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16430 conditions, 3643 events. 1831/3643 cut-off events. For 20312/20356 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 23144 event pairs, 425 based on Foata normal form. 176/3780 useless extension candidates. Maximal degree in co-relation 16402. Up to 1191 conditions per place. [2025-03-04 15:27:59,194 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 272 selfloop transitions, 26 changer transitions 0/312 dead transitions. [2025-03-04 15:27:59,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 312 transitions, 3235 flow [2025-03-04 15:27:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2025-03-04 15:27:59,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2025-03-04 15:27:59,195 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 687 flow. Second operand 10 states and 238 transitions. [2025-03-04 15:27:59,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 312 transitions, 3235 flow [2025-03-04 15:27:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 312 transitions, 3160 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-04 15:27:59,209 INFO L231 Difference]: Finished difference. Result has 120 places, 100 transitions, 830 flow [2025-03-04 15:27:59,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=830, PETRI_PLACES=120, PETRI_TRANSITIONS=100} [2025-03-04 15:27:59,210 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2025-03-04 15:27:59,210 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 100 transitions, 830 flow [2025-03-04 15:27:59,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:59,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:59,210 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:59,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 15:27:59,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:59,411 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:27:59,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:59,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1883864272, now seen corresponding path program 1 times [2025-03-04 15:27:59,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528525293] [2025-03-04 15:27:59,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:59,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:59,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 15:27:59,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:27:59,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:59,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528525293] [2025-03-04 15:27:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528525293] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:59,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235132463] [2025-03-04 15:27:59,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:59,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:59,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:59,464 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:59,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 15:27:59,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-04 15:27:59,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-04 15:27:59,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:59,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:59,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:59,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:27:59,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:59,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235132463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:59,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:59,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:27:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426268547] [2025-03-04 15:27:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:59,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:59,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:59,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:59,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:27:59,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 100 transitions, 830 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:59,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:59,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:27:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:59,963 INFO L124 PetriNetUnfolderBase]: 2006/3701 cut-off events. [2025-03-04 15:27:59,963 INFO L125 PetriNetUnfolderBase]: For 20493/20632 co-relation queries the response was YES. [2025-03-04 15:27:59,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16636 conditions, 3701 events. 2006/3701 cut-off events. For 20493/20632 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23402 event pairs, 266 based on Foata normal form. 226/3909 useless extension candidates. Maximal degree in co-relation 16606. Up to 1126 conditions per place. [2025-03-04 15:27:59,987 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 192 selfloop transitions, 19 changer transitions 0/229 dead transitions. [2025-03-04 15:27:59,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 229 transitions, 2504 flow [2025-03-04 15:27:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-03-04 15:27:59,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2025-03-04 15:27:59,988 INFO L175 Difference]: Start difference. First operand has 120 places, 100 transitions, 830 flow. Second operand 6 states and 132 transitions. [2025-03-04 15:27:59,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 229 transitions, 2504 flow [2025-03-04 15:28:00,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 229 transitions, 2462 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-04 15:28:00,003 INFO L231 Difference]: Finished difference. Result has 122 places, 99 transitions, 846 flow [2025-03-04 15:28:00,003 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=122, PETRI_TRANSITIONS=99} [2025-03-04 15:28:00,003 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-04 15:28:00,003 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 99 transitions, 846 flow [2025-03-04 15:28:00,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:00,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:00,004 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:00,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 15:28:00,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-04 15:28:00,204 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:00,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:00,205 INFO L85 PathProgramCache]: Analyzing trace with hash -583696534, now seen corresponding path program 2 times [2025-03-04 15:28:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979190289] [2025-03-04 15:28:00,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:00,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-04 15:28:00,218 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:28:00,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:00,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979190289] [2025-03-04 15:28:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979190289] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503116131] [2025-03-04 15:28:00,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:00,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:00,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 15:28:00,379 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-04 15:28:00,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:28:00,394 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:00,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:00,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 15:28:00,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:00,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503116131] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:00,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:00,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-04 15:28:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142581480] [2025-03-04 15:28:00,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:00,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 15:28:00,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:00,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 15:28:00,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-03-04 15:28:00,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:00,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 99 transitions, 846 flow. Second operand has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:00,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:00,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:00,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:01,201 INFO L124 PetriNetUnfolderBase]: 1626/2980 cut-off events. [2025-03-04 15:28:01,201 INFO L125 PetriNetUnfolderBase]: For 17391/17403 co-relation queries the response was YES. [2025-03-04 15:28:01,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14162 conditions, 2980 events. 1626/2980 cut-off events. For 17391/17403 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16801 event pairs, 1044 based on Foata normal form. 32/2980 useless extension candidates. Maximal degree in co-relation 14131. Up to 1983 conditions per place. [2025-03-04 15:28:01,217 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 120 selfloop transitions, 19 changer transitions 18/168 dead transitions. [2025-03-04 15:28:01,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 168 transitions, 1731 flow [2025-03-04 15:28:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:28:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:28:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2025-03-04 15:28:01,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3416149068322981 [2025-03-04 15:28:01,223 INFO L175 Difference]: Start difference. First operand has 122 places, 99 transitions, 846 flow. Second operand 14 states and 220 transitions. [2025-03-04 15:28:01,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 168 transitions, 1731 flow [2025-03-04 15:28:01,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 168 transitions, 1582 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-04 15:28:01,236 INFO L231 Difference]: Finished difference. Result has 125 places, 85 transitions, 694 flow [2025-03-04 15:28:01,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=694, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2025-03-04 15:28:01,237 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2025-03-04 15:28:01,237 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 694 flow [2025-03-04 15:28:01,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.428571428571429) internal successors, (292), 28 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:01,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:01,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:01,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 15:28:01,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:01,442 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:01,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1729750195, now seen corresponding path program 1 times [2025-03-04 15:28:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555096323] [2025-03-04 15:28:01,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:01,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:28:01,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:28:01,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:01,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:28:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555096323] [2025-03-04 15:28:01,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555096323] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499278933] [2025-03-04 15:28:01,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:01,487 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:01,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 15:28:01,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:28:01,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:28:01,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:01,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:01,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:28:01,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:28:01,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:28:01,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499278933] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:01,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:01,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:28:01,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605929207] [2025-03-04 15:28:01,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:01,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:28:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:01,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:28:01,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:28:01,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2025-03-04 15:28:01,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 694 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:01,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:01,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2025-03-04 15:28:01,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:02,221 INFO L124 PetriNetUnfolderBase]: 2303/4309 cut-off events. [2025-03-04 15:28:02,222 INFO L125 PetriNetUnfolderBase]: For 23096/23143 co-relation queries the response was YES. [2025-03-04 15:28:02,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18961 conditions, 4309 events. 2303/4309 cut-off events. For 23096/23143 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 27132 event pairs, 618 based on Foata normal form. 166/4455 useless extension candidates. Maximal degree in co-relation 18932. Up to 1449 conditions per place. [2025-03-04 15:28:02,250 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 272 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2025-03-04 15:28:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 308 transitions, 3358 flow [2025-03-04 15:28:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:28:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:28:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-03-04 15:28:02,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-04 15:28:02,251 INFO L175 Difference]: Start difference. First operand has 125 places, 85 transitions, 694 flow. Second operand 10 states and 230 transitions. [2025-03-04 15:28:02,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 308 transitions, 3358 flow [2025-03-04 15:28:02,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 308 transitions, 3202 flow, removed 0 selfloop flow, removed 13 redundant places. [2025-03-04 15:28:02,266 INFO L231 Difference]: Finished difference. Result has 124 places, 96 transitions, 818 flow [2025-03-04 15:28:02,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=818, PETRI_PLACES=124, PETRI_TRANSITIONS=96} [2025-03-04 15:28:02,267 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2025-03-04 15:28:02,267 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 96 transitions, 818 flow [2025-03-04 15:28:02,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:02,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:02,267 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:02,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-04 15:28:02,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:02,472 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:02,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:02,472 INFO L85 PathProgramCache]: Analyzing trace with hash 137610872, now seen corresponding path program 2 times [2025-03-04 15:28:02,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233111644] [2025-03-04 15:28:02,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:02,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-04 15:28:02,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:28:02,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:02,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233111644] [2025-03-04 15:28:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233111644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031890429] [2025-03-04 15:28:02,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:02,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:02,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:02,583 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:02,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 15:28:02,646 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-04 15:28:02,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:28:02,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:02,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:02,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 15:28:02,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:02,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:02,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031890429] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:02,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:02,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-04 15:28:02,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743773886] [2025-03-04 15:28:02,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:02,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 15:28:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:02,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 15:28:02,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-03-04 15:28:03,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:03,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 96 transitions, 818 flow. Second operand has 28 states, 28 states have (on average 10.5) internal successors, (294), 28 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:03,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:03,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:03,511 INFO L124 PetriNetUnfolderBase]: 2377/4087 cut-off events. [2025-03-04 15:28:03,511 INFO L125 PetriNetUnfolderBase]: For 22084/22141 co-relation queries the response was YES. [2025-03-04 15:28:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 4087 events. 2377/4087 cut-off events. For 22084/22141 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 23682 event pairs, 1695 based on Foata normal form. 15/4081 useless extension candidates. Maximal degree in co-relation 18869. Up to 3389 conditions per place. [2025-03-04 15:28:03,533 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 49 selfloop transitions, 10 changer transitions 77/146 dead transitions. [2025-03-04 15:28:03,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 146 transitions, 1440 flow [2025-03-04 15:28:03,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:28:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:28:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 206 transitions. [2025-03-04 15:28:03,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3198757763975155 [2025-03-04 15:28:03,534 INFO L175 Difference]: Start difference. First operand has 124 places, 96 transitions, 818 flow. Second operand 14 states and 206 transitions. [2025-03-04 15:28:03,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 146 transitions, 1440 flow [2025-03-04 15:28:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 146 transitions, 1410 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-04 15:28:03,552 INFO L231 Difference]: Finished difference. Result has 131 places, 69 transitions, 552 flow [2025-03-04 15:28:03,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=118, 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=14, PETRI_FLOW=552, PETRI_PLACES=131, PETRI_TRANSITIONS=69} [2025-03-04 15:28:03,553 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-03-04 15:28:03,553 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 69 transitions, 552 flow [2025-03-04 15:28:03,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.5) internal successors, (294), 28 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:03,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:03,553 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:03,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:03,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:03,754 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:03,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 512572020, now seen corresponding path program 3 times [2025-03-04 15:28:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:03,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720006014] [2025-03-04 15:28:03,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:03,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:03,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-04 15:28:03,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:28:03,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:03,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:04,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720006014] [2025-03-04 15:28:04,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720006014] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:04,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923214815] [2025-03-04 15:28:04,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:04,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:04,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:04,072 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:04,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 15:28:04,127 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-04 15:28:04,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:28:04,145 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:04,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:04,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-04 15:28:04,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:04,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:28:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:04,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2025-03-04 15:28:04,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2025-03-04 15:28:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:05,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923214815] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:05,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:05,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2025-03-04 15:28:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495024916] [2025-03-04 15:28:05,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:05,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-04 15:28:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:05,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-04 15:28:05,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2025-03-04 15:28:05,413 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:05,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 69 transitions, 552 flow. Second operand has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:05,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:05,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:05,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:08,066 INFO L124 PetriNetUnfolderBase]: 5989/10701 cut-off events. [2025-03-04 15:28:08,066 INFO L125 PetriNetUnfolderBase]: For 55456/55569 co-relation queries the response was YES. [2025-03-04 15:28:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47559 conditions, 10701 events. 5989/10701 cut-off events. For 55456/55569 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 75505 event pairs, 1215 based on Foata normal form. 240/10890 useless extension candidates. Maximal degree in co-relation 47528. Up to 1912 conditions per place. [2025-03-04 15:28:08,124 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 452 selfloop transitions, 64 changer transitions 0/526 dead transitions. [2025-03-04 15:28:08,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 526 transitions, 5636 flow [2025-03-04 15:28:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-04 15:28:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-04 15:28:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 552 transitions. [2025-03-04 15:28:08,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-04 15:28:08,126 INFO L175 Difference]: Start difference. First operand has 131 places, 69 transitions, 552 flow. Second operand 32 states and 552 transitions. [2025-03-04 15:28:08,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 526 transitions, 5636 flow [2025-03-04 15:28:08,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 526 transitions, 5515 flow, removed 12 selfloop flow, removed 13 redundant places. [2025-03-04 15:28:08,167 INFO L231 Difference]: Finished difference. Result has 136 places, 114 transitions, 1102 flow [2025-03-04 15:28:08,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1102, PETRI_PLACES=136, PETRI_TRANSITIONS=114} [2025-03-04 15:28:08,168 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 90 predicate places. [2025-03-04 15:28:08,168 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 114 transitions, 1102 flow [2025-03-04 15:28:08,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:08,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:08,168 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:08,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 15:28:08,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-04 15:28:08,369 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:08,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 512572021, now seen corresponding path program 3 times [2025-03-04 15:28:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962463286] [2025-03-04 15:28:08,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:08,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:08,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-04 15:28:08,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:28:08,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:08,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:08,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962463286] [2025-03-04 15:28:08,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962463286] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:08,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30045569] [2025-03-04 15:28:08,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:08,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:08,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:08,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:08,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 15:28:08,795 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-03-04 15:28:08,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:28:08,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:08,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:08,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 15:28:08,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:08,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:28:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:09,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:09,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:28:09,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2025-03-04 15:28:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30045569] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:09,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2025-03-04 15:28:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225283406] [2025-03-04 15:28:09,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:09,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-04 15:28:09,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:09,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-04 15:28:09,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2025-03-04 15:28:09,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:09,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 114 transitions, 1102 flow. Second operand has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:09,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:09,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:09,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:12,529 INFO L124 PetriNetUnfolderBase]: 5599/10015 cut-off events. [2025-03-04 15:28:12,530 INFO L125 PetriNetUnfolderBase]: For 62831/62932 co-relation queries the response was YES. [2025-03-04 15:28:12,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48386 conditions, 10015 events. 5599/10015 cut-off events. For 62831/62932 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 70002 event pairs, 1216 based on Foata normal form. 240/10194 useless extension candidates. Maximal degree in co-relation 48353. Up to 1912 conditions per place. [2025-03-04 15:28:12,586 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 432 selfloop transitions, 63 changer transitions 0/505 dead transitions. [2025-03-04 15:28:12,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 505 transitions, 5516 flow [2025-03-04 15:28:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-04 15:28:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-04 15:28:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 532 transitions. [2025-03-04 15:28:12,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37307152875175315 [2025-03-04 15:28:12,587 INFO L175 Difference]: Start difference. First operand has 136 places, 114 transitions, 1102 flow. Second operand 31 states and 532 transitions. [2025-03-04 15:28:12,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 505 transitions, 5516 flow [2025-03-04 15:28:12,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 505 transitions, 5479 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-03-04 15:28:12,658 INFO L231 Difference]: Finished difference. Result has 157 places, 112 transitions, 1174 flow [2025-03-04 15:28:12,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1174, PETRI_PLACES=157, PETRI_TRANSITIONS=112} [2025-03-04 15:28:12,659 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 111 predicate places. [2025-03-04 15:28:12,659 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 112 transitions, 1174 flow [2025-03-04 15:28:12,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.414634146341463) internal successors, (427), 41 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:12,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:12,659 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:12,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 15:28:12,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-04 15:28:12,860 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:12,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1384703745, now seen corresponding path program 3 times [2025-03-04 15:28:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:12,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856103999] [2025-03-04 15:28:12,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:12,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:12,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-04 15:28:12,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 15:28:12,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:12,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856103999] [2025-03-04 15:28:13,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856103999] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:13,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637486216] [2025-03-04 15:28:13,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:13,173 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:13,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 15:28:13,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-04 15:28:13,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 15:28:13,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:13,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:13,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 15:28:13,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:13,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:28:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:13,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:13,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:28:13,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:28:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:13,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637486216] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:13,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:13,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2025-03-04 15:28:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368195800] [2025-03-04 15:28:13,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:13,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-04 15:28:13,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:13,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-04 15:28:13,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2025-03-04 15:28:14,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:14,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 112 transitions, 1174 flow. Second operand has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:14,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:14,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:14,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:16,144 INFO L124 PetriNetUnfolderBase]: 4997/8664 cut-off events. [2025-03-04 15:28:16,144 INFO L125 PetriNetUnfolderBase]: For 76645/77023 co-relation queries the response was YES. [2025-03-04 15:28:16,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44881 conditions, 8664 events. 4997/8664 cut-off events. For 76645/77023 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 58064 event pairs, 857 based on Foata normal form. 152/8772 useless extension candidates. Maximal degree in co-relation 44847. Up to 1660 conditions per place. [2025-03-04 15:28:16,191 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 567 selfloop transitions, 47 changer transitions 10/646 dead transitions. [2025-03-04 15:28:16,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 646 transitions, 8801 flow [2025-03-04 15:28:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-04 15:28:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-04 15:28:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 513 transitions. [2025-03-04 15:28:16,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3485054347826087 [2025-03-04 15:28:16,193 INFO L175 Difference]: Start difference. First operand has 157 places, 112 transitions, 1174 flow. Second operand 32 states and 513 transitions. [2025-03-04 15:28:16,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 646 transitions, 8801 flow [2025-03-04 15:28:16,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 646 transitions, 7992 flow, removed 24 selfloop flow, removed 30 redundant places. [2025-03-04 15:28:16,230 INFO L231 Difference]: Finished difference. Result has 163 places, 134 transitions, 1375 flow [2025-03-04 15:28:16,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1375, PETRI_PLACES=163, PETRI_TRANSITIONS=134} [2025-03-04 15:28:16,230 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 117 predicate places. [2025-03-04 15:28:16,230 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 134 transitions, 1375 flow [2025-03-04 15:28:16,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:16,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:16,231 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:16,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-04 15:28:16,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:16,431 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:16,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1384703746, now seen corresponding path program 3 times [2025-03-04 15:28:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277033187] [2025-03-04 15:28:16,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:16,438 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-04 15:28:16,450 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 15:28:16,450 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:16,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:16,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:16,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277033187] [2025-03-04 15:28:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277033187] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:16,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88903685] [2025-03-04 15:28:16,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:16,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:16,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:16,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-04 15:28:16,762 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-03-04 15:28:16,777 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 15:28:16,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-04 15:28:16,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:16,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-04 15:28:16,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:16,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:28:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:17,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:17,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:28:17,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:28:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88903685] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:17,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:17,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 38 [2025-03-04 15:28:17,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127185473] [2025-03-04 15:28:17,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:17,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-04 15:28:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:17,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-04 15:28:17,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2025-03-04 15:28:17,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:17,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 134 transitions, 1375 flow. Second operand has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:17,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:17,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:17,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:19,825 INFO L124 PetriNetUnfolderBase]: 4744/8279 cut-off events. [2025-03-04 15:28:19,825 INFO L125 PetriNetUnfolderBase]: For 72212/72568 co-relation queries the response was YES. [2025-03-04 15:28:19,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44313 conditions, 8279 events. 4744/8279 cut-off events. For 72212/72568 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 55216 event pairs, 857 based on Foata normal form. 152/8387 useless extension candidates. Maximal degree in co-relation 44275. Up to 1660 conditions per place. [2025-03-04 15:28:19,868 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 564 selfloop transitions, 47 changer transitions 10/643 dead transitions. [2025-03-04 15:28:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 643 transitions, 8121 flow [2025-03-04 15:28:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-04 15:28:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-04 15:28:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 510 transitions. [2025-03-04 15:28:19,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34646739130434784 [2025-03-04 15:28:19,869 INFO L175 Difference]: Start difference. First operand has 163 places, 134 transitions, 1375 flow. Second operand 32 states and 510 transitions. [2025-03-04 15:28:19,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 643 transitions, 8121 flow [2025-03-04 15:28:19,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 643 transitions, 7959 flow, removed 8 selfloop flow, removed 19 redundant places. [2025-03-04 15:28:19,912 INFO L231 Difference]: Finished difference. Result has 175 places, 133 transitions, 1309 flow [2025-03-04 15:28:19,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1309, PETRI_PLACES=175, PETRI_TRANSITIONS=133} [2025-03-04 15:28:19,913 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 129 predicate places. [2025-03-04 15:28:19,913 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 133 transitions, 1309 flow [2025-03-04 15:28:19,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.65) internal successors, (426), 40 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:19,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:19,914 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:19,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-04 15:28:20,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:20,115 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:20,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:20,115 INFO L85 PathProgramCache]: Analyzing trace with hash 20575924, now seen corresponding path program 4 times [2025-03-04 15:28:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:20,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61211208] [2025-03-04 15:28:20,115 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:20,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:20,121 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 15:28:20,135 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:20,136 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:20,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61211208] [2025-03-04 15:28:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61211208] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98374076] [2025-03-04 15:28:20,483 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:20,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:20,485 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:20,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-04 15:28:20,547 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 15:28:20,563 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:20,563 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:20,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:20,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-04 15:28:20,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:20,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:20,682 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-04 15:28:20,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2025-03-04 15:28:20,746 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-04 15:28:20,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2025-03-04 15:28:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:20,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:21,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-03-04 15:28:21,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2025-03-04 15:28:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:28:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98374076] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:21,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2025-03-04 15:28:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491561088] [2025-03-04 15:28:21,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:21,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-04 15:28:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:21,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-04 15:28:21,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2025-03-04 15:28:22,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 133 transitions, 1309 flow. Second operand has 44 states, 44 states have (on average 10.522727272727273) internal successors, (463), 44 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:24,188 INFO L124 PetriNetUnfolderBase]: 4769/8505 cut-off events. [2025-03-04 15:28:24,188 INFO L125 PetriNetUnfolderBase]: For 58795/59161 co-relation queries the response was YES. [2025-03-04 15:28:24,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43218 conditions, 8505 events. 4769/8505 cut-off events. For 58795/59161 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 57754 event pairs, 1035 based on Foata normal form. 102/8535 useless extension candidates. Maximal degree in co-relation 43182. Up to 2681 conditions per place. [2025-03-04 15:28:24,242 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 349 selfloop transitions, 60 changer transitions 0/425 dead transitions. [2025-03-04 15:28:24,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 425 transitions, 5057 flow [2025-03-04 15:28:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:28:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:28:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 329 transitions. [2025-03-04 15:28:24,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.325098814229249 [2025-03-04 15:28:24,243 INFO L175 Difference]: Start difference. First operand has 175 places, 133 transitions, 1309 flow. Second operand 22 states and 329 transitions. [2025-03-04 15:28:24,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 425 transitions, 5057 flow [2025-03-04 15:28:24,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 425 transitions, 4503 flow, removed 30 selfloop flow, removed 30 redundant places. [2025-03-04 15:28:24,300 INFO L231 Difference]: Finished difference. Result has 168 places, 136 transitions, 1416 flow [2025-03-04 15:28:24,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1416, PETRI_PLACES=168, PETRI_TRANSITIONS=136} [2025-03-04 15:28:24,300 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2025-03-04 15:28:24,300 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 136 transitions, 1416 flow [2025-03-04 15:28:24,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.522727272727273) internal successors, (463), 44 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:24,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:24,300 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:28:24,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:24,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:24,501 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:24,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash 20575925, now seen corresponding path program 4 times [2025-03-04 15:28:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:24,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153888012] [2025-03-04 15:28:24,502 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:24,507 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 15:28:24,512 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:24,513 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:24,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:24,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153888012] [2025-03-04 15:28:24,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153888012] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:24,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862721548] [2025-03-04 15:28:24,875 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:24,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:24,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:24,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:24,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-04 15:28:24,944 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-04 15:28:24,960 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:24,961 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:24,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:24,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-04 15:28:24,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:25,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:25,074 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-04 15:28:25,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-04 15:28:25,120 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-04 15:28:25,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-04 15:28:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:25,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:25,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-03-04 15:28:25,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2025-03-04 15:28:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:28:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862721548] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:25,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 42 [2025-03-04 15:28:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763551252] [2025-03-04 15:28:25,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:25,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-04 15:28:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:25,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-04 15:28:25,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1732, Unknown=0, NotChecked=0, Total=1892 [2025-03-04 15:28:26,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:28:26,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 136 transitions, 1416 flow. Second operand has 44 states, 44 states have (on average 11.318181818181818) internal successors, (498), 44 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:26,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:26,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:28:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:27,646 INFO L124 PetriNetUnfolderBase]: 3871/7582 cut-off events. [2025-03-04 15:28:27,646 INFO L125 PetriNetUnfolderBase]: For 60648/60870 co-relation queries the response was YES. [2025-03-04 15:28:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37988 conditions, 7582 events. 3871/7582 cut-off events. For 60648/60870 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 53506 event pairs, 612 based on Foata normal form. 84/7620 useless extension candidates. Maximal degree in co-relation 37951. Up to 2139 conditions per place. [2025-03-04 15:28:27,706 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 340 selfloop transitions, 60 changer transitions 0/419 dead transitions. [2025-03-04 15:28:27,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 419 transitions, 4610 flow [2025-03-04 15:28:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:28:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:28:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 346 transitions. [2025-03-04 15:28:27,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34189723320158105 [2025-03-04 15:28:27,707 INFO L175 Difference]: Start difference. First operand has 168 places, 136 transitions, 1416 flow. Second operand 22 states and 346 transitions. [2025-03-04 15:28:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 419 transitions, 4610 flow [2025-03-04 15:28:27,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 419 transitions, 4367 flow, removed 7 selfloop flow, removed 25 redundant places. [2025-03-04 15:28:27,779 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 1282 flow [2025-03-04 15:28:27,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1282, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2025-03-04 15:28:27,780 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 118 predicate places. [2025-03-04 15:28:27,780 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 1282 flow [2025-03-04 15:28:27,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 11.318181818181818) internal successors, (498), 44 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:27,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:27,780 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:27,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:27,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-04 15:28:27,981 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:27,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -111740982, now seen corresponding path program 4 times [2025-03-04 15:28:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:27,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982650701] [2025-03-04 15:28:27,981 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:27,988 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:28:27,994 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:28:27,995 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:27,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982650701] [2025-03-04 15:28:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982650701] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712451938] [2025-03-04 15:28:28,415 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:28,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:28,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:28,417 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:28,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-04 15:28:28,482 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:28:28,499 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:28:28,499 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:28,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:28,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-04 15:28:28,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:28,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:28,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:28,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:28:28,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:28:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712451938] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:29,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 43 [2025-03-04 15:28:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428682045] [2025-03-04 15:28:29,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:29,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 15:28:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:29,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 15:28:29,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1842, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 15:28:29,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:29,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 1282 flow. Second operand has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:29,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:29,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:29,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:33,111 INFO L124 PetriNetUnfolderBase]: 4405/7526 cut-off events. [2025-03-04 15:28:33,111 INFO L125 PetriNetUnfolderBase]: For 56164/56598 co-relation queries the response was YES. [2025-03-04 15:28:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38482 conditions, 7526 events. 4405/7526 cut-off events. For 56164/56598 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 48783 event pairs, 638 based on Foata normal form. 92/7585 useless extension candidates. Maximal degree in co-relation 38449. Up to 1296 conditions per place. [2025-03-04 15:28:33,151 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 764 selfloop transitions, 74 changer transitions 0/860 dead transitions. [2025-03-04 15:28:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 860 transitions, 10883 flow [2025-03-04 15:28:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-04 15:28:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-03-04 15:28:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 858 transitions. [2025-03-04 15:28:33,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35192780968006565 [2025-03-04 15:28:33,152 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 1282 flow. Second operand 53 states and 858 transitions. [2025-03-04 15:28:33,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 860 transitions, 10883 flow [2025-03-04 15:28:33,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 860 transitions, 10031 flow, removed 13 selfloop flow, removed 20 redundant places. [2025-03-04 15:28:33,194 INFO L231 Difference]: Finished difference. Result has 202 places, 161 transitions, 1596 flow [2025-03-04 15:28:33,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1596, PETRI_PLACES=202, PETRI_TRANSITIONS=161} [2025-03-04 15:28:33,195 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 156 predicate places. [2025-03-04 15:28:33,195 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 161 transitions, 1596 flow [2025-03-04 15:28:33,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:33,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:33,195 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:33,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:33,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-04 15:28:33,395 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:33,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -111740983, now seen corresponding path program 4 times [2025-03-04 15:28:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:33,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653881013] [2025-03-04 15:28:33,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:33,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:33,402 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:28:33,407 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:28:33,407 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:33,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653881013] [2025-03-04 15:28:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653881013] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145050228] [2025-03-04 15:28:33,801 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:33,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:33,802 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:33,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-04 15:28:33,900 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:28:33,916 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 15:28:33,916 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:33,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:33,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-04 15:28:33,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:34,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:34,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:34,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:28:34,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:28:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145050228] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:34,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:34,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 43 [2025-03-04 15:28:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743827939] [2025-03-04 15:28:34,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:34,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-04 15:28:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:34,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-04 15:28:34,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2025-03-04 15:28:34,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:34,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 161 transitions, 1596 flow. Second operand has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:34,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:34,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:34,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:38,589 INFO L124 PetriNetUnfolderBase]: 4252/7281 cut-off events. [2025-03-04 15:28:38,590 INFO L125 PetriNetUnfolderBase]: For 51716/52134 co-relation queries the response was YES. [2025-03-04 15:28:38,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38511 conditions, 7281 events. 4252/7281 cut-off events. For 51716/52134 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 47200 event pairs, 638 based on Foata normal form. 92/7340 useless extension candidates. Maximal degree in co-relation 38473. Up to 1266 conditions per place. [2025-03-04 15:28:38,631 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 742 selfloop transitions, 74 changer transitions 0/838 dead transitions. [2025-03-04 15:28:38,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 838 transitions, 9979 flow [2025-03-04 15:28:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-04 15:28:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2025-03-04 15:28:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 838 transitions. [2025-03-04 15:28:38,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3503344481605351 [2025-03-04 15:28:38,632 INFO L175 Difference]: Start difference. First operand has 202 places, 161 transitions, 1596 flow. Second operand 52 states and 838 transitions. [2025-03-04 15:28:38,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 838 transitions, 9979 flow [2025-03-04 15:28:38,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 838 transitions, 9798 flow, removed 20 selfloop flow, removed 33 redundant places. [2025-03-04 15:28:38,686 INFO L231 Difference]: Finished difference. Result has 220 places, 160 transitions, 1555 flow [2025-03-04 15:28:38,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1555, PETRI_PLACES=220, PETRI_TRANSITIONS=160} [2025-03-04 15:28:38,687 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 174 predicate places. [2025-03-04 15:28:38,687 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 160 transitions, 1555 flow [2025-03-04 15:28:38,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.71111111111111) internal successors, (482), 45 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:38,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:38,688 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-04 15:28:38,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-04 15:28:38,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-04 15:28:38,889 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:38,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash -92840674, now seen corresponding path program 5 times [2025-03-04 15:28:38,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:38,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665617496] [2025-03-04 15:28:38,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:38,898 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-04 15:28:38,907 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:38,907 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:28:38,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665617496] [2025-03-04 15:28:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665617496] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520741015] [2025-03-04 15:28:39,210 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:39,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:39,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:39,212 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:39,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-04 15:28:39,285 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-04 15:28:39,311 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:39,311 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:28:39,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:39,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-04 15:28:39,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:39,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:39,349 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-03-04 15:28:39,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-03-04 15:28:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:39,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:41,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2025-03-04 15:28:41,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2025-03-04 15:28:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520741015] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:41,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 37 [2025-03-04 15:28:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309874002] [2025-03-04 15:28:41,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:41,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-04 15:28:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:41,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-04 15:28:41,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2025-03-04 15:28:41,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:28:41,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 160 transitions, 1555 flow. Second operand has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:41,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:41,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:28:41,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:43,617 INFO L124 PetriNetUnfolderBase]: 3403/6752 cut-off events. [2025-03-04 15:28:43,617 INFO L125 PetriNetUnfolderBase]: For 46869/47072 co-relation queries the response was YES. [2025-03-04 15:28:43,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33656 conditions, 6752 events. 3403/6752 cut-off events. For 46869/47072 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 46875 event pairs, 611 based on Foata normal form. 78/6775 useless extension candidates. Maximal degree in co-relation 33620. Up to 1116 conditions per place. [2025-03-04 15:28:43,663 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 507 selfloop transitions, 63 changer transitions 0/595 dead transitions. [2025-03-04 15:28:43,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 595 transitions, 7329 flow [2025-03-04 15:28:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-04 15:28:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-04 15:28:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 440 transitions. [2025-03-04 15:28:43,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36789297658862874 [2025-03-04 15:28:43,665 INFO L175 Difference]: Start difference. First operand has 220 places, 160 transitions, 1555 flow. Second operand 26 states and 440 transitions. [2025-03-04 15:28:43,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 595 transitions, 7329 flow [2025-03-04 15:28:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 595 transitions, 6486 flow, removed 39 selfloop flow, removed 51 redundant places. [2025-03-04 15:28:43,718 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 1623 flow [2025-03-04 15:28:43,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1623, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2025-03-04 15:28:43,718 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 150 predicate places. [2025-03-04 15:28:43,718 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 1623 flow [2025-03-04 15:28:43,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.384615384615385) internal successors, (444), 39 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:43,719 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:43,719 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-04 15:28:43,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-04 15:28:43,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:43,919 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:43,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash -92840675, now seen corresponding path program 5 times [2025-03-04 15:28:43,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:43,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595458286] [2025-03-04 15:28:43,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:43,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:43,929 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-04 15:28:43,939 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:43,939 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:28:43,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:44,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595458286] [2025-03-04 15:28:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595458286] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098730730] [2025-03-04 15:28:44,235 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:44,237 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:44,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-04 15:28:44,306 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 6 equivalence classes. [2025-03-04 15:28:44,328 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:44,328 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:28:44,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:44,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-04 15:28:44,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:44,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:28:44,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 15:28:44,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-03-04 15:28:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:44,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:46,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2025-03-04 15:28:46,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2025-03-04 15:28:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098730730] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:46,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 47 [2025-03-04 15:28:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815194453] [2025-03-04 15:28:46,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:46,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-04 15:28:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:46,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-04 15:28:46,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2184, Unknown=0, NotChecked=0, Total=2352 [2025-03-04 15:28:46,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:28:46,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 1623 flow. Second operand has 49 states, 49 states have (on average 11.326530612244898) internal successors, (555), 49 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:46,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:46,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:28:46,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:48,641 INFO L124 PetriNetUnfolderBase]: 3349/6643 cut-off events. [2025-03-04 15:28:48,641 INFO L125 PetriNetUnfolderBase]: For 47152/47344 co-relation queries the response was YES. [2025-03-04 15:28:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33050 conditions, 6643 events. 3349/6643 cut-off events. For 47152/47344 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 45716 event pairs, 659 based on Foata normal form. 78/6641 useless extension candidates. Maximal degree in co-relation 33013. Up to 1116 conditions per place. [2025-03-04 15:28:48,680 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 506 selfloop transitions, 63 changer transitions 0/594 dead transitions. [2025-03-04 15:28:48,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 594 transitions, 6633 flow [2025-03-04 15:28:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-04 15:28:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-04 15:28:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 439 transitions. [2025-03-04 15:28:48,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36705685618729095 [2025-03-04 15:28:48,681 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 1623 flow. Second operand 26 states and 439 transitions. [2025-03-04 15:28:48,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 594 transitions, 6633 flow [2025-03-04 15:28:48,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 594 transitions, 6541 flow, removed 3 selfloop flow, removed 17 redundant places. [2025-03-04 15:28:48,725 INFO L231 Difference]: Finished difference. Result has 204 places, 164 transitions, 1647 flow [2025-03-04 15:28:48,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1647, PETRI_PLACES=204, PETRI_TRANSITIONS=164} [2025-03-04 15:28:48,725 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 158 predicate places. [2025-03-04 15:28:48,725 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 164 transitions, 1647 flow [2025-03-04 15:28:48,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 11.326530612244898) internal successors, (555), 49 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:48,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:48,726 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-04 15:28:48,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-04 15:28:48,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-04 15:28:48,926 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:48,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1555578201, now seen corresponding path program 2 times [2025-03-04 15:28:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147905349] [2025-03-04 15:28:48,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:48,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-04 15:28:48,934 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:28:48,934 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:48,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:48,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147905349] [2025-03-04 15:28:48,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147905349] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:48,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891690360] [2025-03-04 15:28:48,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:48,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:48,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:48,964 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:48,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-04 15:28:49,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-04 15:28:49,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:28:49,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:49,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:49,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:28:49,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:49,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891690360] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:49,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:28:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057737336] [2025-03-04 15:28:49,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:49,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:28:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:49,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:28:49,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:28:49,122 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-03-04 15:28:49,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 164 transitions, 1647 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:49,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:49,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-03-04 15:28:49,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:49,846 INFO L124 PetriNetUnfolderBase]: 3948/7396 cut-off events. [2025-03-04 15:28:49,846 INFO L125 PetriNetUnfolderBase]: For 54782/55010 co-relation queries the response was YES. [2025-03-04 15:28:49,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36958 conditions, 7396 events. 3948/7396 cut-off events. For 54782/55010 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 49702 event pairs, 899 based on Foata normal form. 143/7428 useless extension candidates. Maximal degree in co-relation 36920. Up to 2851 conditions per place. [2025-03-04 15:28:49,883 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 175 selfloop transitions, 40 changer transitions 30/267 dead transitions. [2025-03-04 15:28:49,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 267 transitions, 3041 flow [2025-03-04 15:28:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:28:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:28:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2025-03-04 15:28:49,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43043478260869567 [2025-03-04 15:28:49,884 INFO L175 Difference]: Start difference. First operand has 204 places, 164 transitions, 1647 flow. Second operand 5 states and 99 transitions. [2025-03-04 15:28:49,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 267 transitions, 3041 flow [2025-03-04 15:28:49,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 267 transitions, 2903 flow, removed 1 selfloop flow, removed 28 redundant places. [2025-03-04 15:28:49,937 INFO L231 Difference]: Finished difference. Result has 180 places, 154 transitions, 1534 flow [2025-03-04 15:28:49,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1534, PETRI_PLACES=180, PETRI_TRANSITIONS=154} [2025-03-04 15:28:49,940 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 134 predicate places. [2025-03-04 15:28:49,940 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 154 transitions, 1534 flow [2025-03-04 15:28:49,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:49,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:49,940 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:49,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-04 15:28:50,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-04 15:28:50,141 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:50,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1809120581, now seen corresponding path program 2 times [2025-03-04 15:28:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:50,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464311015] [2025-03-04 15:28:50,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:50,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-04 15:28:50,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 15:28:50,152 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:50,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:50,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464311015] [2025-03-04 15:28:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464311015] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697663703] [2025-03-04 15:28:50,183 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:50,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:50,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:50,185 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:50,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-04 15:28:50,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-04 15:28:50,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 15:28:50,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:50,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:50,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:28:50,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:50,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-04 15:28:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697663703] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:50,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:28:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010403055] [2025-03-04 15:28:50,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:50,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:28:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:50,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:28:50,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:28:50,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2025-03-04 15:28:50,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 154 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:50,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:50,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2025-03-04 15:28:50,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:51,144 INFO L124 PetriNetUnfolderBase]: 3544/6285 cut-off events. [2025-03-04 15:28:51,144 INFO L125 PetriNetUnfolderBase]: For 66304/66788 co-relation queries the response was YES. [2025-03-04 15:28:51,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33425 conditions, 6285 events. 3544/6285 cut-off events. For 66304/66788 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 40917 event pairs, 730 based on Foata normal form. 88/6338 useless extension candidates. Maximal degree in co-relation 33391. Up to 2794 conditions per place. [2025-03-04 15:28:51,175 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 91 selfloop transitions, 14 changer transitions 144/259 dead transitions. [2025-03-04 15:28:51,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 259 transitions, 3381 flow [2025-03-04 15:28:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:28:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:28:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2025-03-04 15:28:51,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217391304347826 [2025-03-04 15:28:51,176 INFO L175 Difference]: Start difference. First operand has 180 places, 154 transitions, 1534 flow. Second operand 5 states and 97 transitions. [2025-03-04 15:28:51,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 259 transitions, 3381 flow [2025-03-04 15:28:51,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 259 transitions, 3256 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-04 15:28:51,212 INFO L231 Difference]: Finished difference. Result has 177 places, 74 transitions, 707 flow [2025-03-04 15:28:51,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=707, PETRI_PLACES=177, PETRI_TRANSITIONS=74} [2025-03-04 15:28:51,213 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-03-04 15:28:51,213 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 74 transitions, 707 flow [2025-03-04 15:28:51,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:51,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:51,213 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-04 15:28:51,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-04 15:28:51,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-04 15:28:51,414 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 14061653, now seen corresponding path program 6 times [2025-03-04 15:28:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213869550] [2025-03-04 15:28:51,414 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:28:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:51,428 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-04 15:28:51,447 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 15:28:51,448 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-04 15:28:51,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213869550] [2025-03-04 15:28:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213869550] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279648085] [2025-03-04 15:28:51,906 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:28:51,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:51,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:51,908 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:51,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-04 15:28:51,985 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-04 15:28:52,006 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 15:28:52,006 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-04 15:28:52,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:52,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-04 15:28:52,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:52,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:52,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:52,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:28:52,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:28:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279648085] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 53 [2025-03-04 15:28:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769277548] [2025-03-04 15:28:52,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-04 15:28:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:52,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-04 15:28:52,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2025-03-04 15:28:53,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:53,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 74 transitions, 707 flow. Second operand has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:53,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:53,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:53,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:56,485 INFO L124 PetriNetUnfolderBase]: 3511/6247 cut-off events. [2025-03-04 15:28:56,486 INFO L125 PetriNetUnfolderBase]: For 60410/60883 co-relation queries the response was YES. [2025-03-04 15:28:56,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34481 conditions, 6247 events. 3511/6247 cut-off events. For 60410/60883 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 38884 event pairs, 343 based on Foata normal form. 102/6290 useless extension candidates. Maximal degree in co-relation 34449. Up to 1011 conditions per place. [2025-03-04 15:28:56,522 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 744 selfloop transitions, 62 changer transitions 0/816 dead transitions. [2025-03-04 15:28:56,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 816 transitions, 9872 flow [2025-03-04 15:28:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-04 15:28:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-03-04 15:28:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 829 transitions. [2025-03-04 15:28:56,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3754528985507246 [2025-03-04 15:28:56,524 INFO L175 Difference]: Start difference. First operand has 177 places, 74 transitions, 707 flow. Second operand 48 states and 829 transitions. [2025-03-04 15:28:56,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 816 transitions, 9872 flow [2025-03-04 15:28:56,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 816 transitions, 8589 flow, removed 156 selfloop flow, removed 21 redundant places. [2025-03-04 15:28:56,566 INFO L231 Difference]: Finished difference. Result has 163 places, 105 transitions, 1058 flow [2025-03-04 15:28:56,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1058, PETRI_PLACES=163, PETRI_TRANSITIONS=105} [2025-03-04 15:28:56,567 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 117 predicate places. [2025-03-04 15:28:56,567 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 105 transitions, 1058 flow [2025-03-04 15:28:56,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:56,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:56,568 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-04 15:28:56,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:56,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-04 15:28:56,768 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:28:56,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash 14061652, now seen corresponding path program 6 times [2025-03-04 15:28:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433110766] [2025-03-04 15:28:56,769 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:28:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:56,779 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-04 15:28:56,791 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 15:28:56,792 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-04 15:28:56,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 36 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:57,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433110766] [2025-03-04 15:28:57,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433110766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:57,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29785185] [2025-03-04 15:28:57,202 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-04 15:28:57,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:57,204 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:57,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-04 15:28:57,286 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-03-04 15:28:57,310 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 15:28:57,310 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-03-04 15:28:57,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:57,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-04 15:28:57,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:57,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 15:28:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:57,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:58,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:28:58,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:28:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29785185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:58,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 53 [2025-03-04 15:28:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994118976] [2025-03-04 15:28:58,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:58,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-04 15:28:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:58,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-04 15:28:58,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2025-03-04 15:28:58,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2025-03-04 15:28:58,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 105 transitions, 1058 flow. Second operand has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:58,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:58,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2025-03-04 15:28:58,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:02,082 INFO L124 PetriNetUnfolderBase]: 3349/5985 cut-off events. [2025-03-04 15:29:02,083 INFO L125 PetriNetUnfolderBase]: For 43580/43759 co-relation queries the response was YES. [2025-03-04 15:29:02,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30501 conditions, 5985 events. 3349/5985 cut-off events. For 43580/43759 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 36831 event pairs, 317 based on Foata normal form. 102/6050 useless extension candidates. Maximal degree in co-relation 30471. Up to 981 conditions per place. [2025-03-04 15:29:02,111 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 651 selfloop transitions, 62 changer transitions 90/813 dead transitions. [2025-03-04 15:29:02,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 813 transitions, 8737 flow [2025-03-04 15:29:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-04 15:29:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-03-04 15:29:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 826 transitions. [2025-03-04 15:29:02,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3740942028985507 [2025-03-04 15:29:02,112 INFO L175 Difference]: Start difference. First operand has 163 places, 105 transitions, 1058 flow. Second operand 48 states and 826 transitions. [2025-03-04 15:29:02,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 813 transitions, 8737 flow [2025-03-04 15:29:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 813 transitions, 8523 flow, removed 15 selfloop flow, removed 26 redundant places. [2025-03-04 15:29:02,143 INFO L231 Difference]: Finished difference. Result has 184 places, 104 transitions, 964 flow [2025-03-04 15:29:02,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=964, PETRI_PLACES=184, PETRI_TRANSITIONS=104} [2025-03-04 15:29:02,144 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 138 predicate places. [2025-03-04 15:29:02,144 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 104 transitions, 964 flow [2025-03-04 15:29:02,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 10.581818181818182) internal successors, (582), 55 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:02,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:02,144 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:02,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-04 15:29:02,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-03-04 15:29:02,345 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:29:02,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 497678849, now seen corresponding path program 5 times [2025-03-04 15:29:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049675345] [2025-03-04 15:29:02,345 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:29:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:02,354 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-04 15:29:02,365 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 15:29:02,365 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:29:02,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:02,659 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:02,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049675345] [2025-03-04 15:29:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049675345] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:02,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702284813] [2025-03-04 15:29:02,660 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:29:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:02,661 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:02,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-04 15:29:02,742 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-04 15:29:02,764 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 15:29:02,764 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:29:02,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:02,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-04 15:29:02,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:02,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:29:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:03,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:03,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-03-04 15:29:03,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2025-03-04 15:29:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702284813] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:03,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2025-03-04 15:29:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231968979] [2025-03-04 15:29:03,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:03,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-04 15:29:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:03,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-04 15:29:03,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2584, Unknown=0, NotChecked=0, Total=2756 [2025-03-04 15:29:03,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:29:03,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 104 transitions, 964 flow. Second operand has 53 states, 53 states have (on average 11.471698113207546) internal successors, (608), 53 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:03,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:03,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:29:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:06,066 INFO L124 PetriNetUnfolderBase]: 3142/5933 cut-off events. [2025-03-04 15:29:06,067 INFO L125 PetriNetUnfolderBase]: For 43441/43594 co-relation queries the response was YES. [2025-03-04 15:29:06,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29418 conditions, 5933 events. 3142/5933 cut-off events. For 43441/43594 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 38101 event pairs, 465 based on Foata normal form. 65/5971 useless extension candidates. Maximal degree in co-relation 29390. Up to 1440 conditions per place. [2025-03-04 15:29:06,093 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 654 selfloop transitions, 36 changer transitions 0/709 dead transitions. [2025-03-04 15:29:06,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 709 transitions, 9397 flow [2025-03-04 15:29:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-04 15:29:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-04 15:29:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 464 transitions. [2025-03-04 15:29:06,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2025-03-04 15:29:06,094 INFO L175 Difference]: Start difference. First operand has 184 places, 104 transitions, 964 flow. Second operand 29 states and 464 transitions. [2025-03-04 15:29:06,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 709 transitions, 9397 flow [2025-03-04 15:29:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 709 transitions, 8176 flow, removed 48 selfloop flow, removed 46 redundant places. [2025-03-04 15:29:06,115 INFO L231 Difference]: Finished difference. Result has 168 places, 108 transitions, 975 flow [2025-03-04 15:29:06,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=975, PETRI_PLACES=168, PETRI_TRANSITIONS=108} [2025-03-04 15:29:06,115 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2025-03-04 15:29:06,115 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 108 transitions, 975 flow [2025-03-04 15:29:06,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.471698113207546) internal successors, (608), 53 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:06,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:06,116 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:06,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-04 15:29:06,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:06,316 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2025-03-04 15:29:06,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 497678850, now seen corresponding path program 5 times [2025-03-04 15:29:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:06,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838688278] [2025-03-04 15:29:06,316 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:29:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:06,323 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-04 15:29:06,338 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 15:29:06,338 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:29:06,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:06,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838688278] [2025-03-04 15:29:06,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838688278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:06,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043035665] [2025-03-04 15:29:06,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:29:06,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:06,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:06,682 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:06,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-04 15:29:06,771 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-04 15:29:06,795 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-04 15:29:06,795 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-04 15:29:06,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:06,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-04 15:29:06,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:06,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 15:29:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:07,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:07,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-03-04 15:29:07,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-03-04 15:29:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043035665] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:07,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2025-03-04 15:29:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569658408] [2025-03-04 15:29:07,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:07,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-04 15:29:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:07,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-04 15:29:07,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2584, Unknown=0, NotChecked=0, Total=2756 [2025-03-04 15:29:07,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2025-03-04 15:29:07,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 108 transitions, 975 flow. Second operand has 53 states, 53 states have (on average 11.471698113207546) internal successors, (608), 53 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:07,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:07,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2025-03-04 15:29:07,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand