./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:08:00,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:08:00,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:08:01,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:08:01,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:08:01,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:08:01,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:08:01,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:08:01,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:08:01,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:08:01,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:08:01,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:08:01,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:08:01,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:08:01,035 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:08:01,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:08:01,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:08:01,039 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:08:01,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:08:01,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:08:01,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:08:01,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:08:01,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:08:01,045 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:08:01,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:08:01,045 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:08:01,045 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:08:01,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:08:01,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:08:01,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:08:01,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:08:01,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:08:01,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:08:01,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:08:01,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:01,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:08:01,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:08:01,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:08:01,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:08:01,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:08:01,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:08:01,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:08:01,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:08:01,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:08:01,050 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-10-12 00:08:01,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:08:01,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:08:01,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:08:01,346 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:08:01,346 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:08:01,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-12 00:08:02,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:08:03,130 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:08:03,131 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-12 00:08:03,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc9a53044/f9176939290f4e92921f7205249ac02c/FLAG149415341 [2024-10-12 00:08:03,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cc9a53044/f9176939290f4e92921f7205249ac02c [2024-10-12 00:08:03,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:08:03,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:08:03,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:03,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:08:03,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:08:03,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c594ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03, skipping insertion in model container [2024-10-12 00:08:03,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:08:03,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:03,453 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:08:03,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:08:03,500 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:08:03,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03 WrapperNode [2024-10-12 00:08:03,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:08:03,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:03,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:08:03,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:08:03,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,558 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 163 [2024-10-12 00:08:03,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:08:03,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:08:03,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:08:03,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:08:03,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,603 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-12 00:08:03,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:08:03,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:08:03,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:08:03,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:08:03,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (1/1) ... [2024-10-12 00:08:03,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:08:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:03,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:08:03,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:08:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:08:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:08:03,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:08:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:08:03,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:08:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:08:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:08:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:08:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:08:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:08:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:08:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:08:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:08:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:08:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:08:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:08:03,771 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:08:03,904 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:08:03,907 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:08:04,233 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:08:04,233 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:08:04,491 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:08:04,491 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-12 00:08:04,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:04 BoogieIcfgContainer [2024-10-12 00:08:04,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:08:04,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:08:04,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:08:04,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:08:04,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:08:03" (1/3) ... [2024-10-12 00:08:04,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acba44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:04, skipping insertion in model container [2024-10-12 00:08:04,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:08:03" (2/3) ... [2024-10-12 00:08:04,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acba44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:08:04, skipping insertion in model container [2024-10-12 00:08:04,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:08:04" (3/3) ... [2024-10-12 00:08:04,503 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-10-12 00:08:04,523 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:08:04,523 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-12 00:08:04,523 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:08:04,577 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-12 00:08:04,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 102 flow [2024-10-12 00:08:04,653 INFO L124 PetriNetUnfolderBase]: 4/42 cut-off events. [2024-10-12 00:08:04,653 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:08:04,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 4/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-12 00:08:04,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 102 flow [2024-10-12 00:08:04,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 89 flow [2024-10-12 00:08:04,674 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:08:04,681 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;@61416717, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:08:04,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-10-12 00:08:04,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:08:04,685 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:08:04,685 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:08:04,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:04,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:08:04,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:04,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash 517225, now seen corresponding path program 1 times [2024-10-12 00:08:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:04,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707500214] [2024-10-12 00:08:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:04,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:05,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707500214] [2024-10-12 00:08:05,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707500214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:05,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:05,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991502711] [2024-10-12 00:08:05,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:05,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:05,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:05,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:05,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 89 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) [2024-10-12 00:08:05,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:05,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:05,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:05,362 INFO L124 PetriNetUnfolderBase]: 165/363 cut-off events. [2024-10-12 00:08:05,363 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-12 00:08:05,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 363 events. 165/363 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1720 event pairs, 136 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 617. Up to 270 conditions per place. [2024-10-12 00:08:05,373 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 19 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-10-12 00:08:05,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 125 flow [2024-10-12 00:08:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-12 00:08:05,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-10-12 00:08:05,388 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 89 flow. Second operand 4 states and 84 transitions. [2024-10-12 00:08:05,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 125 flow [2024-10-12 00:08:05,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:05,396 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 82 flow [2024-10-12 00:08:05,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-10-12 00:08:05,405 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2024-10-12 00:08:05,406 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 82 flow [2024-10-12 00:08:05,406 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) [2024-10-12 00:08:05,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:05,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-12 00:08:05,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:08:05,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:05,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 16034492, now seen corresponding path program 1 times [2024-10-12 00:08:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288397244] [2024-10-12 00:08:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:05,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288397244] [2024-10-12 00:08:05,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288397244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:05,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:05,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:05,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269679679] [2024-10-12 00:08:05,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:05,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:05,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:05,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 82 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) [2024-10-12 00:08:05,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:05,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:05,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:05,665 INFO L124 PetriNetUnfolderBase]: 166/367 cut-off events. [2024-10-12 00:08:05,665 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:08:05,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 367 events. 166/367 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1732 event pairs, 136 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 642. Up to 275 conditions per place. [2024-10-12 00:08:05,669 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-10-12 00:08:05,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 146 flow [2024-10-12 00:08:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-10-12 00:08:05,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-10-12 00:08:05,674 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 82 flow. Second operand 4 states and 83 transitions. [2024-10-12 00:08:05,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 146 flow [2024-10-12 00:08:05,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:05,677 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 101 flow [2024-10-12 00:08:05,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-10-12 00:08:05,678 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-10-12 00:08:05,678 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 101 flow [2024-10-12 00:08:05,679 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) [2024-10-12 00:08:05,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:05,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:08:05,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:08:05,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:05,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1767686971, now seen corresponding path program 1 times [2024-10-12 00:08:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707462460] [2024-10-12 00:08:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707462460] [2024-10-12 00:08:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707462460] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:05,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:05,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137662229] [2024-10-12 00:08:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:05,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:05,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-10-12 00:08:05,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2024-10-12 00:08:05,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:05,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-10-12 00:08:05,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:06,093 INFO L124 PetriNetUnfolderBase]: 178/405 cut-off events. [2024-10-12 00:08:06,094 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-12 00:08:06,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 405 events. 178/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1880 event pairs, 149 based on Foata normal form. 17/341 useless extension candidates. Maximal degree in co-relation 654. Up to 273 conditions per place. [2024-10-12 00:08:06,100 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 22 selfloop transitions, 2 changer transitions 8/45 dead transitions. [2024-10-12 00:08:06,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 182 flow [2024-10-12 00:08:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-12 00:08:06,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795454545454546 [2024-10-12 00:08:06,104 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 101 flow. Second operand 4 states and 102 transitions. [2024-10-12 00:08:06,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 182 flow [2024-10-12 00:08:06,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:06,108 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 110 flow [2024-10-12 00:08:06,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-10-12 00:08:06,110 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-10-12 00:08:06,111 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 110 flow [2024-10-12 00:08:06,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2024-10-12 00:08:06,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:06,111 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:08:06,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:08:06,112 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:06,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash 942694697, now seen corresponding path program 1 times [2024-10-12 00:08:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708613289] [2024-10-12 00:08:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708613289] [2024-10-12 00:08:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708613289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538520374] [2024-10-12 00:08:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:06,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:06,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:06,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:08:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:06,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:06,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:06,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538520374] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:06,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:06,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 00:08:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043992839] [2024-10-12 00:08:06,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:06,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:08:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:08:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:08:06,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:06,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 110 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:06,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:06,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:06,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:06,648 INFO L124 PetriNetUnfolderBase]: 168/378 cut-off events. [2024-10-12 00:08:06,649 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-12 00:08:06,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 378 events. 168/378 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1803 event pairs, 136 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 775. Up to 277 conditions per place. [2024-10-12 00:08:06,653 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 22 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-10-12 00:08:06,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 214 flow [2024-10-12 00:08:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-10-12 00:08:06,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-10-12 00:08:06,656 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 110 flow. Second operand 10 states and 177 transitions. [2024-10-12 00:08:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 214 flow [2024-10-12 00:08:06,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:06,659 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 184 flow [2024-10-12 00:08:06,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-10-12 00:08:06,663 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-10-12 00:08:06,663 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 184 flow [2024-10-12 00:08:06,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:06,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:06,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:06,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:06,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:06,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:06,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:06,867 INFO L85 PathProgramCache]: Analyzing trace with hash -305460238, now seen corresponding path program 1 times [2024-10-12 00:08:06,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:06,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563520284] [2024-10-12 00:08:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563520284] [2024-10-12 00:08:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563520284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725501887] [2024-10-12 00:08:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:07,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:07,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:07,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:08:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:07,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:07,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:07,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725501887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:07,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:07,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-12 00:08:07,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101738072] [2024-10-12 00:08:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:07,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:07,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:08:07,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-10-12 00:08:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-10-12 00:08:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-10-12 00:08:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:07,223 INFO L124 PetriNetUnfolderBase]: 109/258 cut-off events. [2024-10-12 00:08:07,223 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-12 00:08:07,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 258 events. 109/258 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1067 event pairs, 83 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 505. Up to 187 conditions per place. [2024-10-12 00:08:07,228 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-10-12 00:08:07,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 232 flow [2024-10-12 00:08:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-12 00:08:07,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-10-12 00:08:07,232 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 184 flow. Second operand 3 states and 70 transitions. [2024-10-12 00:08:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 232 flow [2024-10-12 00:08:07,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 204 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:07,236 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 146 flow [2024-10-12 00:08:07,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-10-12 00:08:07,237 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-10-12 00:08:07,237 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 146 flow [2024-10-12 00:08:07,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2024-10-12 00:08:07,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:07,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:07,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:08:07,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:07,439 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:07,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1489495435, now seen corresponding path program 1 times [2024-10-12 00:08:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535491017] [2024-10-12 00:08:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:07,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535491017] [2024-10-12 00:08:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535491017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:08:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266141345] [2024-10-12 00:08:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:07,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:08:07,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:08:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:08:07,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-10-12 00:08:07,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:07,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:07,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-10-12 00:08:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:07,628 INFO L124 PetriNetUnfolderBase]: 211/464 cut-off events. [2024-10-12 00:08:07,629 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-10-12 00:08:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 464 events. 211/464 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2195 event pairs, 128 based on Foata normal form. 12/436 useless extension candidates. Maximal degree in co-relation 932. Up to 281 conditions per place. [2024-10-12 00:08:07,634 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-10-12 00:08:07,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 294 flow [2024-10-12 00:08:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-12 00:08:07,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-12 00:08:07,635 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 146 flow. Second operand 4 states and 94 transitions. [2024-10-12 00:08:07,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 294 flow [2024-10-12 00:08:07,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:07,638 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 174 flow [2024-10-12 00:08:07,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-10-12 00:08:07,639 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-10-12 00:08:07,639 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 174 flow [2024-10-12 00:08:07,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:07,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:07,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:07,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:08:07,640 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:07,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash 382564061, now seen corresponding path program 1 times [2024-10-12 00:08:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:07,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429774721] [2024-10-12 00:08:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429774721] [2024-10-12 00:08:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429774721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:07,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:08:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38142084] [2024-10-12 00:08:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:07,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:08:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:08:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:08:07,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-10-12 00:08:07,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:07,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:07,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-10-12 00:08:07,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:07,757 INFO L124 PetriNetUnfolderBase]: 133/334 cut-off events. [2024-10-12 00:08:07,758 INFO L125 PetriNetUnfolderBase]: For 108/126 co-relation queries the response was YES. [2024-10-12 00:08:07,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 334 events. 133/334 cut-off events. For 108/126 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1550 event pairs, 40 based on Foata normal form. 12/316 useless extension candidates. Maximal degree in co-relation 748. Up to 184 conditions per place. [2024-10-12 00:08:07,763 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 35 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-10-12 00:08:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 268 flow [2024-10-12 00:08:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:08:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:08:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-10-12 00:08:07,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-10-12 00:08:07,765 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 174 flow. Second operand 3 states and 75 transitions. [2024-10-12 00:08:07,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 268 flow [2024-10-12 00:08:07,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:07,770 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 194 flow [2024-10-12 00:08:07,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-10-12 00:08:07,772 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-10-12 00:08:07,772 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 194 flow [2024-10-12 00:08:07,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:07,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:07,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:07,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:08:07,773 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:07,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1644374770, now seen corresponding path program 1 times [2024-10-12 00:08:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544130869] [2024-10-12 00:08:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:08,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544130869] [2024-10-12 00:08:08,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544130869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237965430] [2024-10-12 00:08:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:08,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:08,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:08,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:08,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:08:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:08,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:08,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:08,460 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 [2024-10-12 00:08:08,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-12 00:08:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:08,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:09,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-10-12 00:08:09,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-10-12 00:08:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237965430] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:09,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-10-12 00:08:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31913871] [2024-10-12 00:08:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:09,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:08:09,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:08:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-10-12 00:08:09,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:08:09,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 194 flow. Second operand has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:08:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:10,820 INFO L124 PetriNetUnfolderBase]: 465/993 cut-off events. [2024-10-12 00:08:10,821 INFO L125 PetriNetUnfolderBase]: For 536/591 co-relation queries the response was YES. [2024-10-12 00:08:10,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 993 events. 465/993 cut-off events. For 536/591 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5544 event pairs, 57 based on Foata normal form. 21/960 useless extension candidates. Maximal degree in co-relation 2493. Up to 289 conditions per place. [2024-10-12 00:08:10,830 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 87 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-10-12 00:08:10,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 679 flow [2024-10-12 00:08:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:08:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:08:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 242 transitions. [2024-10-12 00:08:10,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-12 00:08:10,832 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 194 flow. Second operand 14 states and 242 transitions. [2024-10-12 00:08:10,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 679 flow [2024-10-12 00:08:10,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 120 transitions, 630 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:10,839 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 305 flow [2024-10-12 00:08:10,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=305, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-10-12 00:08:10,841 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-10-12 00:08:10,841 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 305 flow [2024-10-12 00:08:10,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.894736842105264) internal successors, (226), 19 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:10,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:10,843 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:08:10,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:11,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:11,045 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:11,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1912923012, now seen corresponding path program 2 times [2024-10-12 00:08:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:11,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603868462] [2024-10-12 00:08:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603868462] [2024-10-12 00:08:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603868462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587401359] [2024-10-12 00:08:11,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:11,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:11,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:11,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:11,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 00:08:11,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:11,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:11,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:08:11,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:11,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:08:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587401359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:11,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:08:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565440973] [2024-10-12 00:08:11,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:11,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:08:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:08:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:08:11,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:11,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 305 flow. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:11,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:11,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:11,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:11,625 INFO L124 PetriNetUnfolderBase]: 324/752 cut-off events. [2024-10-12 00:08:11,626 INFO L125 PetriNetUnfolderBase]: For 662/713 co-relation queries the response was YES. [2024-10-12 00:08:11,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 752 events. 324/752 cut-off events. For 662/713 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4297 event pairs, 212 based on Foata normal form. 14/723 useless extension candidates. Maximal degree in co-relation 1992. Up to 551 conditions per place. [2024-10-12 00:08:11,632 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 29 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-10-12 00:08:11,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 61 transitions, 409 flow [2024-10-12 00:08:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:08:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:08:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-10-12 00:08:11,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-10-12 00:08:11,634 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 305 flow. Second operand 14 states and 231 transitions. [2024-10-12 00:08:11,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 61 transitions, 409 flow [2024-10-12 00:08:11,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 61 transitions, 384 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-10-12 00:08:11,639 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 326 flow [2024-10-12 00:08:11,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=14, PETRI_FLOW=326, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-10-12 00:08:11,641 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-10-12 00:08:11,641 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 326 flow [2024-10-12 00:08:11,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:11,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:11,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:11,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:08:11,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-12 00:08:11,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:11,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1641938508, now seen corresponding path program 1 times [2024-10-12 00:08:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483505139] [2024-10-12 00:08:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483505139] [2024-10-12 00:08:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483505139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:12,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290254737] [2024-10-12 00:08:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:12,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:12,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:12,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:12,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 00:08:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:12,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 00:08:12,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:12,516 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 [2024-10-12 00:08:12,840 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 15 treesize of output 7 [2024-10-12 00:08:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:12,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:13,195 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 [2024-10-12 00:08:13,201 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 [2024-10-12 00:08:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:13,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290254737] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:13,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-12 00:08:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545439216] [2024-10-12 00:08:13,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:13,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:08:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:08:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-12 00:08:13,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-12 00:08:13,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 326 flow. Second operand has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:13,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:13,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-12 00:08:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:14,837 INFO L124 PetriNetUnfolderBase]: 377/865 cut-off events. [2024-10-12 00:08:14,837 INFO L125 PetriNetUnfolderBase]: For 643/693 co-relation queries the response was YES. [2024-10-12 00:08:14,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 865 events. 377/865 cut-off events. For 643/693 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4923 event pairs, 57 based on Foata normal form. 52/913 useless extension candidates. Maximal degree in co-relation 2318. Up to 304 conditions per place. [2024-10-12 00:08:14,843 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 82 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-10-12 00:08:14,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 119 transitions, 745 flow [2024-10-12 00:08:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:08:14,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:08:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 250 transitions. [2024-10-12 00:08:14,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-10-12 00:08:14,846 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 326 flow. Second operand 14 states and 250 transitions. [2024-10-12 00:08:14,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 119 transitions, 745 flow [2024-10-12 00:08:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 676 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:14,851 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 333 flow [2024-10-12 00:08:14,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=333, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-10-12 00:08:14,853 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-10-12 00:08:14,854 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 333 flow [2024-10-12 00:08:14,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.8) internal successors, (256), 20 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:14,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:14,854 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:14,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 00:08:15,059 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:15,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1613686351, now seen corresponding path program 1 times [2024-10-12 00:08:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175368211] [2024-10-12 00:08:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175368211] [2024-10-12 00:08:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175368211] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:15,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985383678] [2024-10-12 00:08:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:15,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:15,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:15,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:15,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 00:08:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:15,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:08:15,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:15,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:15,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985383678] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:15,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:15,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-12 00:08:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803402651] [2024-10-12 00:08:15,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:15,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:08:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:08:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:08:15,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:15,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 333 flow. Second operand has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:15,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:15,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:15,694 INFO L124 PetriNetUnfolderBase]: 333/803 cut-off events. [2024-10-12 00:08:15,694 INFO L125 PetriNetUnfolderBase]: For 1197/1248 co-relation queries the response was YES. [2024-10-12 00:08:15,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 803 events. 333/803 cut-off events. For 1197/1248 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4742 event pairs, 203 based on Foata normal form. 54/810 useless extension candidates. Maximal degree in co-relation 2297. Up to 391 conditions per place. [2024-10-12 00:08:15,701 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 47 selfloop transitions, 15 changer transitions 1/77 dead transitions. [2024-10-12 00:08:15,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 490 flow [2024-10-12 00:08:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:08:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:08:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-10-12 00:08:15,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-10-12 00:08:15,703 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 333 flow. Second operand 8 states and 158 transitions. [2024-10-12 00:08:15,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 490 flow [2024-10-12 00:08:15,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 452 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-12 00:08:15,710 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 302 flow [2024-10-12 00:08:15,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-10-12 00:08:15,711 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-10-12 00:08:15,711 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 302 flow [2024-10-12 00:08:15,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.533333333333333) internal successors, (233), 15 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:15,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:15,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:15,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:08:15,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 00:08:15,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:15,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1263755580, now seen corresponding path program 2 times [2024-10-12 00:08:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:15,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796202248] [2024-10-12 00:08:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:15,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:15,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796202248] [2024-10-12 00:08:15,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796202248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:15,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327522018] [2024-10-12 00:08:15,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:15,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:15,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:16,003 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:16,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 00:08:16,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:16,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:16,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:08:16,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:16,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:16,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327522018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-12 00:08:16,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906085354] [2024-10-12 00:08:16,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:08:16,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-10-12 00:08:16,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:16,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:16,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-10-12 00:08:16,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:16,312 INFO L124 PetriNetUnfolderBase]: 508/1106 cut-off events. [2024-10-12 00:08:16,313 INFO L125 PetriNetUnfolderBase]: For 1266/1290 co-relation queries the response was YES. [2024-10-12 00:08:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1106 events. 508/1106 cut-off events. For 1266/1290 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6355 event pairs, 154 based on Foata normal form. 30/1087 useless extension candidates. Maximal degree in co-relation 3162. Up to 349 conditions per place. [2024-10-12 00:08:16,322 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 63 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-10-12 00:08:16,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 556 flow [2024-10-12 00:08:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-12 00:08:16,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-10-12 00:08:16,323 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 302 flow. Second operand 4 states and 85 transitions. [2024-10-12 00:08:16,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 556 flow [2024-10-12 00:08:16,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 528 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-12 00:08:16,330 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 284 flow [2024-10-12 00:08:16,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-12 00:08:16,330 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-10-12 00:08:16,330 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 284 flow [2024-10-12 00:08:16,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:16,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:16,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:16,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:08:16,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:16,532 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:16,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash 521717857, now seen corresponding path program 1 times [2024-10-12 00:08:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276506057] [2024-10-12 00:08:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:16,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276506057] [2024-10-12 00:08:16,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276506057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:16,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498342051] [2024-10-12 00:08:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:16,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:16,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:16,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:08:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:16,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:08:16,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:16,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498342051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:16,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:08:16,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345919418] [2024-10-12 00:08:16,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:16,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:08:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:08:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:08:16,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-10-12 00:08:16,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:16,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:16,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-10-12 00:08:16,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:17,161 INFO L124 PetriNetUnfolderBase]: 728/1590 cut-off events. [2024-10-12 00:08:17,162 INFO L125 PetriNetUnfolderBase]: For 2569/2665 co-relation queries the response was YES. [2024-10-12 00:08:17,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 1590 events. 728/1590 cut-off events. For 2569/2665 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8959 event pairs, 198 based on Foata normal form. 82/1641 useless extension candidates. Maximal degree in co-relation 4846. Up to 615 conditions per place. [2024-10-12 00:08:17,176 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 125 selfloop transitions, 13 changer transitions 0/148 dead transitions. [2024-10-12 00:08:17,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 1032 flow [2024-10-12 00:08:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-10-12 00:08:17,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2024-10-12 00:08:17,178 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 284 flow. Second operand 10 states and 226 transitions. [2024-10-12 00:08:17,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 1032 flow [2024-10-12 00:08:17,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 148 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:17,191 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 350 flow [2024-10-12 00:08:17,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-10-12 00:08:17,193 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-10-12 00:08:17,193 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 350 flow [2024-10-12 00:08:17,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:17,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:17,194 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:17,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:08:17,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:08:17,399 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:17,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1648289988, now seen corresponding path program 1 times [2024-10-12 00:08:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140908893] [2024-10-12 00:08:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:17,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:17,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140908893] [2024-10-12 00:08:17,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140908893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:17,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180079578] [2024-10-12 00:08:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:17,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:17,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:08:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:17,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:08:17,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180079578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:17,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:17,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-10-12 00:08:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291024285] [2024-10-12 00:08:17,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:17,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-12 00:08:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-12 00:08:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-10-12 00:08:17,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:17,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 350 flow. Second operand has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:17,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:17,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:18,337 INFO L124 PetriNetUnfolderBase]: 544/1314 cut-off events. [2024-10-12 00:08:18,337 INFO L125 PetriNetUnfolderBase]: For 2121/2134 co-relation queries the response was YES. [2024-10-12 00:08:18,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 1314 events. 544/1314 cut-off events. For 2121/2134 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7506 event pairs, 131 based on Foata normal form. 13/1272 useless extension candidates. Maximal degree in co-relation 4029. Up to 662 conditions per place. [2024-10-12 00:08:18,348 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 34 selfloop transitions, 16 changer transitions 26/92 dead transitions. [2024-10-12 00:08:18,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 585 flow [2024-10-12 00:08:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:08:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:08:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-10-12 00:08:18,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-10-12 00:08:18,351 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 350 flow. Second operand 10 states and 197 transitions. [2024-10-12 00:08:18,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 585 flow [2024-10-12 00:08:18,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 545 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:18,360 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 321 flow [2024-10-12 00:08:18,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2024-10-12 00:08:18,361 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-10-12 00:08:18,361 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 321 flow [2024-10-12 00:08:18,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:18,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:18,362 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:18,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:08:18,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:18,563 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:18,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1778924590, now seen corresponding path program 2 times [2024-10-12 00:08:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:18,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26426228] [2024-10-12 00:08:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:18,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26426228] [2024-10-12 00:08:19,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26426228] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46582928] [2024-10-12 00:08:19,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:19,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:19,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:19,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:08:19,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:19,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:19,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:08:19,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:19,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46582928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:19,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-10-12 00:08:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374690583] [2024-10-12 00:08:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:19,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:19,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:08:19,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:19,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:19,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:19,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:19,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:19,968 INFO L124 PetriNetUnfolderBase]: 657/1509 cut-off events. [2024-10-12 00:08:19,969 INFO L125 PetriNetUnfolderBase]: For 2395/2421 co-relation queries the response was YES. [2024-10-12 00:08:19,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 1509 events. 657/1509 cut-off events. For 2395/2421 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8673 event pairs, 44 based on Foata normal form. 52/1558 useless extension candidates. Maximal degree in co-relation 4595. Up to 435 conditions per place. [2024-10-12 00:08:20,015 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2024-10-12 00:08:20,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 687 flow [2024-10-12 00:08:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:08:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:08:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-12 00:08:20,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-12 00:08:20,017 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 321 flow. Second operand 5 states and 120 transitions. [2024-10-12 00:08:20,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 687 flow [2024-10-12 00:08:20,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 636 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-10-12 00:08:20,026 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 336 flow [2024-10-12 00:08:20,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-10-12 00:08:20,027 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-10-12 00:08:20,027 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 336 flow [2024-10-12 00:08:20,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:20,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:20,028 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:20,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:20,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-12 00:08:20,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:20,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash -31652052, now seen corresponding path program 1 times [2024-10-12 00:08:20,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83921708] [2024-10-12 00:08:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:21,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83921708] [2024-10-12 00:08:21,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83921708] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:21,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935052916] [2024-10-12 00:08:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:21,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:21,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:21,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:21,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:08:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:21,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 00:08:21,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:21,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:21,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:21,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-12 00:08:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:21,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935052916] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:21,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:08:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-10-12 00:08:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113806332] [2024-10-12 00:08:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:21,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:21,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-10-12 00:08:21,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-10-12 00:08:21,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:21,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:21,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-10-12 00:08:21,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:21,849 INFO L124 PetriNetUnfolderBase]: 883/1751 cut-off events. [2024-10-12 00:08:21,849 INFO L125 PetriNetUnfolderBase]: For 2436/2478 co-relation queries the response was YES. [2024-10-12 00:08:21,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 1751 events. 883/1751 cut-off events. For 2436/2478 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9553 event pairs, 26 based on Foata normal form. 7/1756 useless extension candidates. Maximal degree in co-relation 5342. Up to 511 conditions per place. [2024-10-12 00:08:21,865 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 76 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-10-12 00:08:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 657 flow [2024-10-12 00:08:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:08:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:08:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-10-12 00:08:21,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-10-12 00:08:21,867 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 336 flow. Second operand 5 states and 107 transitions. [2024-10-12 00:08:21,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 657 flow [2024-10-12 00:08:21,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:08:21,873 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 393 flow [2024-10-12 00:08:21,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=393, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-10-12 00:08:21,874 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-10-12 00:08:21,875 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 393 flow [2024-10-12 00:08:21,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:21,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:21,875 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:21,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:08:22,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:08:22,076 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:22,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1562821524, now seen corresponding path program 2 times [2024-10-12 00:08:22,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671450091] [2024-10-12 00:08:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671450091] [2024-10-12 00:08:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671450091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450742313] [2024-10-12 00:08:22,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:22,971 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:22,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:08:23,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:08:23,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:23,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:08:23,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:23,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:08:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450742313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:08:23,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 13 [2024-10-12 00:08:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574006705] [2024-10-12 00:08:23,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:23,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:08:23,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-10-12 00:08:23,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 393 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:23,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:23,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-10-12 00:08:23,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:23,340 INFO L124 PetriNetUnfolderBase]: 672/1505 cut-off events. [2024-10-12 00:08:23,341 INFO L125 PetriNetUnfolderBase]: For 3562/3588 co-relation queries the response was YES. [2024-10-12 00:08:23,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 1505 events. 672/1505 cut-off events. For 3562/3588 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8498 event pairs, 47 based on Foata normal form. 27/1526 useless extension candidates. Maximal degree in co-relation 4931. Up to 548 conditions per place. [2024-10-12 00:08:23,355 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 9 changer transitions 0/104 dead transitions. [2024-10-12 00:08:23,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 734 flow [2024-10-12 00:08:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:08:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:08:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-10-12 00:08:23,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-10-12 00:08:23,357 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 393 flow. Second operand 5 states and 118 transitions. [2024-10-12 00:08:23,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 734 flow [2024-10-12 00:08:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 718 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-12 00:08:23,365 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 428 flow [2024-10-12 00:08:23,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-10-12 00:08:23,366 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-10-12 00:08:23,366 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 428 flow [2024-10-12 00:08:23,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:23,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:23,367 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:23,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 00:08:23,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:08:23,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:23,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash -981213060, now seen corresponding path program 1 times [2024-10-12 00:08:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891115743] [2024-10-12 00:08:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891115743] [2024-10-12 00:08:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891115743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984507719] [2024-10-12 00:08:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:24,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:24,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:24,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:08:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:24,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 00:08:24,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:08:24,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:24,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:24,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-10-12 00:08:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984507719] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:24,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 00:08:24,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10, 7] total 20 [2024-10-12 00:08:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545132774] [2024-10-12 00:08:24,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:24,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-10-12 00:08:25,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-10-12 00:08:25,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 428 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) [2024-10-12 00:08:25,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:25,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-10-12 00:08:25,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:25,231 INFO L124 PetriNetUnfolderBase]: 706/1526 cut-off events. [2024-10-12 00:08:25,232 INFO L125 PetriNetUnfolderBase]: For 4353/4389 co-relation queries the response was YES. [2024-10-12 00:08:25,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 1526 events. 706/1526 cut-off events. For 4353/4389 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8486 event pairs, 185 based on Foata normal form. 7/1501 useless extension candidates. Maximal degree in co-relation 5188. Up to 947 conditions per place. [2024-10-12 00:08:25,247 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-10-12 00:08:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 686 flow [2024-10-12 00:08:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:08:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:08:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-10-12 00:08:25,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-12 00:08:25,248 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 428 flow. Second operand 5 states and 110 transitions. [2024-10-12 00:08:25,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 686 flow [2024-10-12 00:08:25,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:08:25,259 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 446 flow [2024-10-12 00:08:25,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-10-12 00:08:25,260 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-10-12 00:08:25,260 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 446 flow [2024-10-12 00:08:25,260 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) [2024-10-12 00:08:25,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:25,260 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:25,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 00:08:25,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 00:08:25,461 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:25,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1669338137, now seen corresponding path program 2 times [2024-10-12 00:08:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58157938] [2024-10-12 00:08:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:25,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 00:08:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:25,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58157938] [2024-10-12 00:08:25,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58157938] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:08:25,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:08:25,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:08:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056157151] [2024-10-12 00:08:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:08:25,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:08:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:08:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:08:25,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-10-12 00:08:25,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:25,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:25,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-10-12 00:08:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:25,799 INFO L124 PetriNetUnfolderBase]: 807/1989 cut-off events. [2024-10-12 00:08:25,799 INFO L125 PetriNetUnfolderBase]: For 6114/6282 co-relation queries the response was YES. [2024-10-12 00:08:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1989 events. 807/1989 cut-off events. For 6114/6282 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12255 event pairs, 135 based on Foata normal form. 47/2013 useless extension candidates. Maximal degree in co-relation 6661. Up to 717 conditions per place. [2024-10-12 00:08:25,815 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 79 selfloop transitions, 11 changer transitions 7/114 dead transitions. [2024-10-12 00:08:25,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 895 flow [2024-10-12 00:08:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:08:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:08:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-10-12 00:08:25,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-10-12 00:08:25,816 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 446 flow. Second operand 4 states and 109 transitions. [2024-10-12 00:08:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 895 flow [2024-10-12 00:08:25,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 862 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:25,826 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 478 flow [2024-10-12 00:08:25,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-10-12 00:08:25,827 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-10-12 00:08:25,827 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 478 flow [2024-10-12 00:08:25,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:25,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:25,828 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:25,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 00:08:25,828 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:25,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1459449365, now seen corresponding path program 1 times [2024-10-12 00:08:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404893189] [2024-10-12 00:08:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:26,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404893189] [2024-10-12 00:08:26,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404893189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98601008] [2024-10-12 00:08:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:26,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:26,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:26,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:08:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:26,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 00:08:26,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:27,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:27,436 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-10-12 00:08:27,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-10-12 00:08:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98601008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:27,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:27,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-10-12 00:08:27,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510800828] [2024-10-12 00:08:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:27,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 00:08:27,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 00:08:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 00:08:28,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:08:28,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 478 flow. Second operand has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:28,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:28,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:08:28,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:30,428 INFO L124 PetriNetUnfolderBase]: 1993/4181 cut-off events. [2024-10-12 00:08:30,429 INFO L125 PetriNetUnfolderBase]: For 15404/15662 co-relation queries the response was YES. [2024-10-12 00:08:30,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15016 conditions, 4181 events. 1993/4181 cut-off events. For 15404/15662 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 28591 event pairs, 218 based on Foata normal form. 255/4425 useless extension candidates. Maximal degree in co-relation 14987. Up to 1122 conditions per place. [2024-10-12 00:08:30,464 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 283 selfloop transitions, 75 changer transitions 6/375 dead transitions. [2024-10-12 00:08:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 375 transitions, 2902 flow [2024-10-12 00:08:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-12 00:08:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-10-12 00:08:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 686 transitions. [2024-10-12 00:08:30,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802660753880266 [2024-10-12 00:08:30,467 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 478 flow. Second operand 41 states and 686 transitions. [2024-10-12 00:08:30,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 375 transitions, 2902 flow [2024-10-12 00:08:30,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 375 transitions, 2799 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-10-12 00:08:30,506 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 1423 flow [2024-10-12 00:08:30,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1423, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2024-10-12 00:08:30,507 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-10-12 00:08:30,507 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 1423 flow [2024-10-12 00:08:30,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.61111111111111) internal successors, (418), 36 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:30,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:30,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:30,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 00:08:30,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:30,709 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:30,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash 72737377, now seen corresponding path program 2 times [2024-10-12 00:08:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:30,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453223332] [2024-10-12 00:08:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:30,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453223332] [2024-10-12 00:08:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453223332] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309650720] [2024-10-12 00:08:31,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:31,443 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:31,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:08:31,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:31,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:31,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 00:08:31,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:31,615 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 [2024-10-12 00:08:32,027 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:08:32,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-12 00:08:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:32,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:32,663 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 41 treesize of output 37 [2024-10-12 00:08:32,671 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-12 00:08:32,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-10-12 00:08:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:32,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309650720] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:32,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:32,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2024-10-12 00:08:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067223751] [2024-10-12 00:08:32,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:32,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 00:08:32,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:32,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 00:08:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 00:08:33,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:08:33,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 1423 flow. Second operand has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:33,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:33,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:08:33,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:37,065 INFO L124 PetriNetUnfolderBase]: 4179/8690 cut-off events. [2024-10-12 00:08:37,065 INFO L125 PetriNetUnfolderBase]: For 76835/77342 co-relation queries the response was YES. [2024-10-12 00:08:37,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38672 conditions, 8690 events. 4179/8690 cut-off events. For 76835/77342 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 64662 event pairs, 602 based on Foata normal form. 423/9079 useless extension candidates. Maximal degree in co-relation 38624. Up to 1389 conditions per place. [2024-10-12 00:08:37,155 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 439 selfloop transitions, 150 changer transitions 22/622 dead transitions. [2024-10-12 00:08:37,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 622 transitions, 6328 flow [2024-10-12 00:08:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-12 00:08:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-10-12 00:08:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 980 transitions. [2024-10-12 00:08:37,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4202401372212693 [2024-10-12 00:08:37,159 INFO L175 Difference]: Start difference. First operand has 141 places, 137 transitions, 1423 flow. Second operand 53 states and 980 transitions. [2024-10-12 00:08:37,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 622 transitions, 6328 flow [2024-10-12 00:08:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 622 transitions, 6016 flow, removed 132 selfloop flow, removed 10 redundant places. [2024-10-12 00:08:37,372 INFO L231 Difference]: Finished difference. Result has 207 places, 268 transitions, 3710 flow [2024-10-12 00:08:37,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3710, PETRI_PLACES=207, PETRI_TRANSITIONS=268} [2024-10-12 00:08:37,374 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-10-12 00:08:37,374 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 268 transitions, 3710 flow [2024-10-12 00:08:37,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 11.526315789473685) internal successors, (438), 38 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:37,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:37,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:37,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:37,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:37,577 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:37,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash 191133145, now seen corresponding path program 1 times [2024-10-12 00:08:37,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204623105] [2024-10-12 00:08:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:38,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204623105] [2024-10-12 00:08:38,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204623105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986189640] [2024-10-12 00:08:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:38,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:38,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:38,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:38,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 00:08:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:38,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 00:08:38,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:38,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:39,081 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-10-12 00:08:39,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 42 [2024-10-12 00:08:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986189640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:39,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-10-12 00:08:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722262229] [2024-10-12 00:08:39,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:39,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 00:08:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 00:08:39,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 00:08:39,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:08:39,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 268 transitions, 3710 flow. Second operand has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:39,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:39,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:08:39,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:42,888 INFO L124 PetriNetUnfolderBase]: 4201/8797 cut-off events. [2024-10-12 00:08:42,889 INFO L125 PetriNetUnfolderBase]: For 137335/137807 co-relation queries the response was YES. [2024-10-12 00:08:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45295 conditions, 8797 events. 4201/8797 cut-off events. For 137335/137807 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 65883 event pairs, 629 based on Foata normal form. 49/8817 useless extension candidates. Maximal degree in co-relation 45219. Up to 3357 conditions per place. [2024-10-12 00:08:42,978 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 361 selfloop transitions, 124 changer transitions 3/499 dead transitions. [2024-10-12 00:08:42,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 499 transitions, 6270 flow [2024-10-12 00:08:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 00:08:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-12 00:08:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 549 transitions. [2024-10-12 00:08:42,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3669786096256685 [2024-10-12 00:08:42,982 INFO L175 Difference]: Start difference. First operand has 207 places, 268 transitions, 3710 flow. Second operand 34 states and 549 transitions. [2024-10-12 00:08:42,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 499 transitions, 6270 flow [2024-10-12 00:08:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 499 transitions, 5392 flow, removed 424 selfloop flow, removed 10 redundant places. [2024-10-12 00:08:43,714 INFO L231 Difference]: Finished difference. Result has 236 places, 287 transitions, 3742 flow [2024-10-12 00:08:43,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3742, PETRI_PLACES=236, PETRI_TRANSITIONS=287} [2024-10-12 00:08:43,715 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-10-12 00:08:43,715 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 287 transitions, 3742 flow [2024-10-12 00:08:43,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:43,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:43,716 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:43,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:43,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 00:08:43,917 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:43,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1747540903, now seen corresponding path program 1 times [2024-10-12 00:08:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:43,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426573061] [2024-10-12 00:08:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:44,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:44,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426573061] [2024-10-12 00:08:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426573061] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80338642] [2024-10-12 00:08:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:44,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:44,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:44,674 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:44,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 00:08:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:44,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-12 00:08:44,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:45,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:45,607 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-10-12 00:08:45,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 41 [2024-10-12 00:08:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80338642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:45,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:45,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-10-12 00:08:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106573369] [2024-10-12 00:08:45,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:45,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 00:08:45,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 00:08:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 00:08:46,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-12 00:08:46,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 287 transitions, 3742 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:46,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:46,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-12 00:08:46,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:49,209 INFO L124 PetriNetUnfolderBase]: 3729/8559 cut-off events. [2024-10-12 00:08:49,210 INFO L125 PetriNetUnfolderBase]: For 134907/135364 co-relation queries the response was YES. [2024-10-12 00:08:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43121 conditions, 8559 events. 3729/8559 cut-off events. For 134907/135364 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 68775 event pairs, 338 based on Foata normal form. 150/8680 useless extension candidates. Maximal degree in co-relation 43038. Up to 4392 conditions per place. [2024-10-12 00:08:49,309 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 301 selfloop transitions, 69 changer transitions 31/462 dead transitions. [2024-10-12 00:08:49,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 462 transitions, 5865 flow [2024-10-12 00:08:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-12 00:08:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-12 00:08:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 471 transitions. [2024-10-12 00:08:49,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3823051948051948 [2024-10-12 00:08:49,312 INFO L175 Difference]: Start difference. First operand has 236 places, 287 transitions, 3742 flow. Second operand 28 states and 471 transitions. [2024-10-12 00:08:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 462 transitions, 5865 flow [2024-10-12 00:08:50,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 462 transitions, 5697 flow, removed 38 selfloop flow, removed 22 redundant places. [2024-10-12 00:08:50,081 INFO L231 Difference]: Finished difference. Result has 248 places, 298 transitions, 3984 flow [2024-10-12 00:08:50,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3984, PETRI_PLACES=248, PETRI_TRANSITIONS=298} [2024-10-12 00:08:50,082 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-10-12 00:08:50,082 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 298 transitions, 3984 flow [2024-10-12 00:08:50,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:50,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:50,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:50,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 00:08:50,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:50,285 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:50,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2040108057, now seen corresponding path program 2 times [2024-10-12 00:08:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:50,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830558154] [2024-10-12 00:08:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830558154] [2024-10-12 00:08:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830558154] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:50,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7673223] [2024-10-12 00:08:50,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:08:50,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:50,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:50,987 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:50,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 00:08:51,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:08:51,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:51,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-12 00:08:51,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:51,161 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 [2024-10-12 00:08:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:51,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:52,087 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 77 treesize of output 69 [2024-10-12 00:08:52,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:52,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 135 [2024-10-12 00:08:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7673223] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:52,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 34 [2024-10-12 00:08:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022275769] [2024-10-12 00:08:52,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:52,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 00:08:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 00:08:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 00:08:52,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-10-12 00:08:52,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 298 transitions, 3984 flow. Second operand has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:52,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:52,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-10-12 00:08:52,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:08:56,307 INFO L124 PetriNetUnfolderBase]: 3843/8672 cut-off events. [2024-10-12 00:08:56,307 INFO L125 PetriNetUnfolderBase]: For 171242/171727 co-relation queries the response was YES. [2024-10-12 00:08:56,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46774 conditions, 8672 events. 3843/8672 cut-off events. For 171242/171727 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 69601 event pairs, 631 based on Foata normal form. 194/8783 useless extension candidates. Maximal degree in co-relation 46683. Up to 4122 conditions per place. [2024-10-12 00:08:56,388 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 373 selfloop transitions, 83 changer transitions 11/527 dead transitions. [2024-10-12 00:08:56,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 527 transitions, 6599 flow [2024-10-12 00:08:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-12 00:08:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-12 00:08:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 644 transitions. [2024-10-12 00:08:56,391 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-10-12 00:08:56,391 INFO L175 Difference]: Start difference. First operand has 248 places, 298 transitions, 3984 flow. Second operand 37 states and 644 transitions. [2024-10-12 00:08:56,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 527 transitions, 6599 flow [2024-10-12 00:08:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 527 transitions, 6409 flow, removed 53 selfloop flow, removed 23 redundant places. [2024-10-12 00:08:57,229 INFO L231 Difference]: Finished difference. Result has 262 places, 312 transitions, 4404 flow [2024-10-12 00:08:57,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4404, PETRI_PLACES=262, PETRI_TRANSITIONS=312} [2024-10-12 00:08:57,230 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-10-12 00:08:57,230 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 312 transitions, 4404 flow [2024-10-12 00:08:57,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 12.527777777777779) internal successors, (451), 36 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:57,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:08:57,231 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:08:57,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 00:08:57,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 00:08:57,431 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:08:57,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:08:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1047649848, now seen corresponding path program 3 times [2024-10-12 00:08:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:08:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677496711] [2024-10-12 00:08:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:08:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:08:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:08:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:08:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:08:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677496711] [2024-10-12 00:08:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677496711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:08:58,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250183657] [2024-10-12 00:08:58,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:08:58,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:08:58,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:08:58,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:08:58,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 00:08:58,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 00:08:58,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:08:58,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 00:08:58,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:08:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:58,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:08:58,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:08:58,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2024-10-12 00:08:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:08:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250183657] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:08:58,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:08:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 24 [2024-10-12 00:08:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301337970] [2024-10-12 00:08:58,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:08:58,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:08:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:08:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:08:58,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:08:58,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:08:58,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 312 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:08:58,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:08:58,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:08:58,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:02,267 INFO L124 PetriNetUnfolderBase]: 5757/12100 cut-off events. [2024-10-12 00:09:02,267 INFO L125 PetriNetUnfolderBase]: For 244885/245551 co-relation queries the response was YES. [2024-10-12 00:09:02,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66406 conditions, 12100 events. 5757/12100 cut-off events. For 244885/245551 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 97522 event pairs, 826 based on Foata normal form. 353/12404 useless extension candidates. Maximal degree in co-relation 66311. Up to 4571 conditions per place. [2024-10-12 00:09:02,393 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 436 selfloop transitions, 228 changer transitions 12/687 dead transitions. [2024-10-12 00:09:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 687 transitions, 9505 flow [2024-10-12 00:09:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-12 00:09:02,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-10-12 00:09:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 685 transitions. [2024-10-12 00:09:02,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991841491841492 [2024-10-12 00:09:02,395 INFO L175 Difference]: Start difference. First operand has 262 places, 312 transitions, 4404 flow. Second operand 39 states and 685 transitions. [2024-10-12 00:09:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 687 transitions, 9505 flow [2024-10-12 00:09:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 687 transitions, 9278 flow, removed 77 selfloop flow, removed 17 redundant places. [2024-10-12 00:09:03,888 INFO L231 Difference]: Finished difference. Result has 296 places, 400 transitions, 6550 flow [2024-10-12 00:09:03,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6550, PETRI_PLACES=296, PETRI_TRANSITIONS=400} [2024-10-12 00:09:03,889 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-10-12 00:09:03,889 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 400 transitions, 6550 flow [2024-10-12 00:09:03,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.653846153846153) internal successors, (303), 26 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:03,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:03,890 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:03,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-12 00:09:04,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:04,091 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:09:04,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1130900288, now seen corresponding path program 4 times [2024-10-12 00:09:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912548560] [2024-10-12 00:09:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:04,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:04,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912548560] [2024-10-12 00:09:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912548560] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964576421] [2024-10-12 00:09:04,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 00:09:04,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:04,991 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:04,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 00:09:05,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 00:09:05,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:05,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 00:09:05,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:09:05,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:05,335 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-12 00:09:05,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2024-10-12 00:09:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:09:05,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964576421] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:05,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:05,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 26 [2024-10-12 00:09:05,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986621320] [2024-10-12 00:09:05,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:05,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:09:05,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:05,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:09:05,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-10-12 00:09:05,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-12 00:09:05,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 400 transitions, 6550 flow. Second operand has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:05,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:05,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-12 00:09:05,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:10,746 INFO L124 PetriNetUnfolderBase]: 8280/17455 cut-off events. [2024-10-12 00:09:10,747 INFO L125 PetriNetUnfolderBase]: For 456982/457840 co-relation queries the response was YES. [2024-10-12 00:09:11,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105203 conditions, 17455 events. 8280/17455 cut-off events. For 456982/457840 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 151896 event pairs, 542 based on Foata normal form. 453/17864 useless extension candidates. Maximal degree in co-relation 105090. Up to 4003 conditions per place. [2024-10-12 00:09:11,228 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 530 selfloop transitions, 364 changer transitions 21/926 dead transitions. [2024-10-12 00:09:11,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 926 transitions, 15134 flow [2024-10-12 00:09:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-12 00:09:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-12 00:09:11,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 791 transitions. [2024-10-12 00:09:11,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40857438016528924 [2024-10-12 00:09:11,230 INFO L175 Difference]: Start difference. First operand has 296 places, 400 transitions, 6550 flow. Second operand 44 states and 791 transitions. [2024-10-12 00:09:11,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 926 transitions, 15134 flow [2024-10-12 00:09:13,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 926 transitions, 14274 flow, removed 268 selfloop flow, removed 11 redundant places. [2024-10-12 00:09:13,857 INFO L231 Difference]: Finished difference. Result has 356 places, 539 transitions, 9950 flow [2024-10-12 00:09:13,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9950, PETRI_PLACES=356, PETRI_TRANSITIONS=539} [2024-10-12 00:09:13,858 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-10-12 00:09:13,858 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 539 transitions, 9950 flow [2024-10-12 00:09:13,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 28 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:13,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:13,859 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:13,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:14,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 00:09:14,060 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2024-10-12 00:09:14,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1713348146, now seen corresponding path program 5 times [2024-10-12 00:09:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701069055] [2024-10-12 00:09:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:14,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701069055] [2024-10-12 00:09:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701069055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299660881] [2024-10-12 00:09:14,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 00:09:14,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:14,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:14,876 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:09:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 00:09:14,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-12 00:09:14,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:14,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:09:14,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:15,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:15,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:15,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 73 [2024-10-12 00:09:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 00:09:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299660881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:15,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:15,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 7] total 32 [2024-10-12 00:09:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566106441] [2024-10-12 00:09:15,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:15,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-12 00:09:15,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-12 00:09:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 00:09:15,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-12 00:09:15,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 539 transitions, 9950 flow. Second operand has 34 states, 34 states have (on average 10.823529411764707) internal successors, (368), 34 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:15,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:15,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-12 00:09:15,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand