./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:30:55,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:30:55,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:30:55,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:30:55,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:30:55,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:30:55,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:30:55,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:30:55,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:30:55,650 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:30:55,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:30:55,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:30:55,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:30:55,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:30:55,653 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:30:55,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:30:55,653 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:30:55,653 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:30:55,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:30:55,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:30:55,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:30:55,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:30:55,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:30:55,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:30:55,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:30:55,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:30:55,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:30:55,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:30:55,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:55,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:30:55,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:30:55,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:30:55,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:30:55,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:30:55,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:30:55,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:30:55,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:30:55,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:30:55,662 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2024-10-13 16:30:55,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:30:55,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:30:55,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:30:55,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:30:55,882 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:30:55,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-13 16:30:57,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:30:57,327 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:30:57,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-1.i [2024-10-13 16:30:57,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a71b99f/c320e50f7828484c92a72566b88ac0ab/FLAG922eb6737 [2024-10-13 16:30:57,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a71b99f/c320e50f7828484c92a72566b88ac0ab [2024-10-13 16:30:57,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:30:57,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:30:57,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:57,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:30:57,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:30:57,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3830f44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57, skipping insertion in model container [2024-10-13 16:30:57,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:30:57,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:57,682 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:30:57,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:57,752 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:30:57,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57 WrapperNode [2024-10-13 16:30:57,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:57,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:57,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:30:57,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:30:57,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,801 INFO L138 Inliner]: procedures = 277, calls = 32, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 165 [2024-10-13 16:30:57,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:57,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:30:57,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:30:57,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:30:57,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,841 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 2 writes are split as follows [0, 2, 0]. [2024-10-13 16:30:57,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:30:57,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:30:57,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:30:57,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:30:57,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (1/1) ... [2024-10-13 16:30:57,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:57,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:57,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:30:57,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:30:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 16:30:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 16:30:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 16:30:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:30:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:30:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:30:57,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:30:57,947 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:30:58,060 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:30:58,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:30:58,281 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:30:58,281 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:30:58,411 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:30:58,411 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:30:58,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:58 BoogieIcfgContainer [2024-10-13 16:30:58,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:30:58,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:30:58,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:30:58,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:30:58,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:57" (1/3) ... [2024-10-13 16:30:58,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666a7698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:58, skipping insertion in model container [2024-10-13 16:30:58,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:57" (2/3) ... [2024-10-13 16:30:58,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666a7698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:58, skipping insertion in model container [2024-10-13 16:30:58,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:58" (3/3) ... [2024-10-13 16:30:58,420 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2024-10-13 16:30:58,432 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:30:58,433 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:30:58,433 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:30:58,477 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:30:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 16:30:58,529 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-13 16:30:58,529 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:30:58,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-13 16:30:58,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 16:30:58,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-13 16:30:58,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:30:58,552 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;@3e26a7a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:30:58,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-13 16:30:58,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:30:58,562 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-13 16:30:58,562 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:30:58,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:58,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:58,564 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:30:58,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash 461954200, now seen corresponding path program 1 times [2024-10-13 16:30:58,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:58,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470538932] [2024-10-13 16:30:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:58,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470538932] [2024-10-13 16:30:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470538932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490113854] [2024-10-13 16:30:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:58,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:58,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:30:58,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:58,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:58,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:30:58,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:59,165 INFO L124 PetriNetUnfolderBase]: 708/1406 cut-off events. [2024-10-13 16:30:59,165 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-10-13 16:30:59,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1406 events. 708/1406 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7666 event pairs, 143 based on Foata normal form. 40/1294 useless extension candidates. Maximal degree in co-relation 2468. Up to 781 conditions per place. [2024-10-13 16:30:59,176 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-13 16:30:59,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-10-13 16:30:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-13 16:30:59,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-13 16:30:59,189 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-10-13 16:30:59,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-10-13 16:30:59,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:59,197 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-10-13 16:30:59,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-13 16:30:59,203 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-13 16:30:59,203 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-10-13 16:30:59,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:59,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:59,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:59,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:30:59,204 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:30:59,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 490786625, now seen corresponding path program 1 times [2024-10-13 16:30:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797510828] [2024-10-13 16:30:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:59,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:59,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797510828] [2024-10-13 16:30:59,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797510828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:59,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:59,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:59,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982155826] [2024-10-13 16:30:59,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:59,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:59,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:59,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:59,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:30:59,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-10-13 16:30:59,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:59,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:30:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:59,509 INFO L124 PetriNetUnfolderBase]: 746/1508 cut-off events. [2024-10-13 16:30:59,509 INFO L125 PetriNetUnfolderBase]: For 346/350 co-relation queries the response was YES. [2024-10-13 16:30:59,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1508 events. 746/1508 cut-off events. For 346/350 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8354 event pairs, 195 based on Foata normal form. 64/1451 useless extension candidates. Maximal degree in co-relation 2800. Up to 839 conditions per place. [2024-10-13 16:30:59,516 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-10-13 16:30:59,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-10-13 16:30:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-13 16:30:59,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 16:30:59,520 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-10-13 16:30:59,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-10-13 16:30:59,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:30:59,524 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-10-13 16:30:59,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-13 16:30:59,525 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-10-13 16:30:59,525 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-10-13 16:30:59,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-10-13 16:30:59,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:59,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:59,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:30:59,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:30:59,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1965514119, now seen corresponding path program 1 times [2024-10-13 16:30:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:59,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392430155] [2024-10-13 16:30:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392430155] [2024-10-13 16:30:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392430155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557239800] [2024-10-13 16:30:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:59,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:59,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:30:59,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-10-13 16:30:59,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:59,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:30:59,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:59,850 INFO L124 PetriNetUnfolderBase]: 1250/2479 cut-off events. [2024-10-13 16:30:59,851 INFO L125 PetriNetUnfolderBase]: For 1160/1168 co-relation queries the response was YES. [2024-10-13 16:30:59,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5711 conditions, 2479 events. 1250/2479 cut-off events. For 1160/1168 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15009 event pairs, 528 based on Foata normal form. 68/2430 useless extension candidates. Maximal degree in co-relation 5209. Up to 1228 conditions per place. [2024-10-13 16:30:59,861 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-10-13 16:30:59,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-10-13 16:30:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-13 16:30:59,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-13 16:30:59,863 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-10-13 16:30:59,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-10-13 16:30:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:59,869 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-10-13 16:30:59,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-10-13 16:30:59,870 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-10-13 16:30:59,870 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-10-13 16:30:59,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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) [2024-10-13 16:30:59,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:59,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:59,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:30:59,871 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:30:59,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:59,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1652043344, now seen corresponding path program 1 times [2024-10-13 16:30:59,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:59,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740101564] [2024-10-13 16:30:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:59,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740101564] [2024-10-13 16:30:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740101564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795881271] [2024-10-13 16:30:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:59,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:59,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:30:59,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:59,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:59,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:30:59,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:00,232 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2024-10-13 16:31:00,232 INFO L125 PetriNetUnfolderBase]: For 2145/2317 co-relation queries the response was YES. [2024-10-13 16:31:00,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3261 events. 1711/3261 cut-off events. For 2145/2317 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20149 event pairs, 635 based on Foata normal form. 106/3248 useless extension candidates. Maximal degree in co-relation 7134. Up to 1454 conditions per place. [2024-10-13 16:31:00,245 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-10-13 16:31:00,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-10-13 16:31:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-13 16:31:00,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-13 16:31:00,246 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-10-13 16:31:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-10-13 16:31:00,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:00,252 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-10-13 16:31:00,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-10-13 16:31:00,252 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-10-13 16:31:00,253 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-10-13 16:31:00,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:00,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:00,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:00,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:31:00,253 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:00,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1387941989, now seen corresponding path program 1 times [2024-10-13 16:31:00,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:00,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460693702] [2024-10-13 16:31:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460693702] [2024-10-13 16:31:00,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460693702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:00,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:00,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155620291] [2024-10-13 16:31:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:31:00,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:31:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:31:00,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 16:31:00,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:00,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:00,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 16:31:00,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:00,472 INFO L124 PetriNetUnfolderBase]: 823/1824 cut-off events. [2024-10-13 16:31:00,472 INFO L125 PetriNetUnfolderBase]: For 1152/1228 co-relation queries the response was YES. [2024-10-13 16:31:00,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 1824 events. 823/1824 cut-off events. For 1152/1228 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10616 event pairs, 210 based on Foata normal form. 92/1883 useless extension candidates. Maximal degree in co-relation 4330. Up to 954 conditions per place. [2024-10-13 16:31:00,480 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-10-13 16:31:00,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-10-13 16:31:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:31:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:31:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-13 16:31:00,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:31:00,482 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-10-13 16:31:00,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-10-13 16:31:00,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:00,489 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-10-13 16:31:00,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-10-13 16:31:00,490 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-13 16:31:00,490 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-10-13 16:31:00,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:00,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:00,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:00,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:31:00,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:00,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -358145564, now seen corresponding path program 1 times [2024-10-13 16:31:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708431244] [2024-10-13 16:31:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708431244] [2024-10-13 16:31:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708431244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188956890] [2024-10-13 16:31:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:00,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:00,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:00,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:31:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:00,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:00,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:00,691 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188956890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:31:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579920272] [2024-10-13 16:31:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:00,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:00,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:00,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:31:00,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:00,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:00,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:00,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:00,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:00,996 INFO L124 PetriNetUnfolderBase]: 1302/2777 cut-off events. [2024-10-13 16:31:00,997 INFO L125 PetriNetUnfolderBase]: For 1364/1474 co-relation queries the response was YES. [2024-10-13 16:31:01,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2777 events. 1302/2777 cut-off events. For 1364/1474 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17033 event pairs, 273 based on Foata normal form. 18/2744 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2024-10-13 16:31:01,009 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-13 16:31:01,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-10-13 16:31:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-10-13 16:31:01,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 16:31:01,010 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-10-13 16:31:01,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-10-13 16:31:01,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:01,014 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-10-13 16:31:01,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-10-13 16:31:01,016 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-10-13 16:31:01,016 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-10-13 16:31:01,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:01,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:01,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:01,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:31:01,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:31:01,218 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:01,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1415219994, now seen corresponding path program 1 times [2024-10-13 16:31:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480303793] [2024-10-13 16:31:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480303793] [2024-10-13 16:31:01,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480303793] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:01,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:01,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:31:01,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834471111] [2024-10-13 16:31:01,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:01,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:01,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:01,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:01,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:01,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:01,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:01,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:01,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:01,690 INFO L124 PetriNetUnfolderBase]: 1824/3777 cut-off events. [2024-10-13 16:31:01,690 INFO L125 PetriNetUnfolderBase]: For 2941/3113 co-relation queries the response was YES. [2024-10-13 16:31:01,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9793 conditions, 3777 events. 1824/3777 cut-off events. For 2941/3113 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24295 event pairs, 351 based on Foata normal form. 26/3786 useless extension candidates. Maximal degree in co-relation 7956. Up to 1716 conditions per place. [2024-10-13 16:31:01,714 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-10-13 16:31:01,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-10-13 16:31:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-10-13 16:31:01,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-10-13 16:31:01,716 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-10-13 16:31:01,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-10-13 16:31:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:01,723 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-10-13 16:31:01,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-10-13 16:31:01,723 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-10-13 16:31:01,724 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-10-13 16:31:01,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:01,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:01,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:01,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:31:01,724 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:01,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -163740156, now seen corresponding path program 1 times [2024-10-13 16:31:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190602434] [2024-10-13 16:31:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:01,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190602434] [2024-10-13 16:31:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190602434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:01,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:31:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773794217] [2024-10-13 16:31:01,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:01,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:01,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:01,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:01,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:01,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:01,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:02,230 INFO L124 PetriNetUnfolderBase]: 2301/4739 cut-off events. [2024-10-13 16:31:02,231 INFO L125 PetriNetUnfolderBase]: For 4939/5173 co-relation queries the response was YES. [2024-10-13 16:31:02,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4739 events. 2301/4739 cut-off events. For 4939/5173 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32233 event pairs, 536 based on Foata normal form. 24/4736 useless extension candidates. Maximal degree in co-relation 9575. Up to 2363 conditions per place. [2024-10-13 16:31:02,253 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-10-13 16:31:02,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-10-13 16:31:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:31:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:31:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-10-13 16:31:02,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-13 16:31:02,255 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-10-13 16:31:02,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-10-13 16:31:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:02,265 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-10-13 16:31:02,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-10-13 16:31:02,266 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-13 16:31:02,266 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-10-13 16:31:02,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:02,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:02,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:02,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:31:02,267 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:02,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1552758543, now seen corresponding path program 1 times [2024-10-13 16:31:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355648877] [2024-10-13 16:31:02,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:02,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355648877] [2024-10-13 16:31:02,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355648877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292444161] [2024-10-13 16:31:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:02,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:02,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:02,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:31:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:02,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:31:02,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:02,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292444161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:02,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:31:02,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25371098] [2024-10-13 16:31:02,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:02,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:31:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:31:02,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:31:02,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:02,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:02,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:02,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:02,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:02,796 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-10-13 16:31:02,797 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-10-13 16:31:02,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32574 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2024-10-13 16:31:02,816 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-10-13 16:31:02,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-10-13 16:31:02,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-13 16:31:02,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-13 16:31:02,817 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-10-13 16:31:02,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-10-13 16:31:02,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 16:31:02,830 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-10-13 16:31:02,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-13 16:31:02,831 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-10-13 16:31:02,831 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-10-13 16:31:02,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:02,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:02,831 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:02,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:03,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 16:31:03,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:03,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1782389887, now seen corresponding path program 1 times [2024-10-13 16:31:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037182476] [2024-10-13 16:31:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:03,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037182476] [2024-10-13 16:31:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037182476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541083635] [2024-10-13 16:31:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:03,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:31:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:03,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:03,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:03,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541083635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:03,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:03,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:31:03,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751326785] [2024-10-13 16:31:03,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:03,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:31:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:03,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:31:03,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:31:03,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:03,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:03,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:03,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:04,041 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-10-13 16:31:04,041 INFO L125 PetriNetUnfolderBase]: For 12128/12358 co-relation queries the response was YES. [2024-10-13 16:31:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12128/12358 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46752 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2024-10-13 16:31:04,071 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-10-13 16:31:04,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-10-13 16:31:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 16:31:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 16:31:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-10-13 16:31:04,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-10-13 16:31:04,073 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-10-13 16:31:04,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-10-13 16:31:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:04,090 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-10-13 16:31:04,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-10-13 16:31:04,090 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-13 16:31:04,090 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-10-13 16:31:04,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:04,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:04,091 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:04,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:31:04,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:04,295 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:04,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -922146348, now seen corresponding path program 1 times [2024-10-13 16:31:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197475313] [2024-10-13 16:31:04,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197475313] [2024-10-13 16:31:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197475313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:04,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:04,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:31:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467306656] [2024-10-13 16:31:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:04,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:04,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:04,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:04,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:04,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:04,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:05,069 INFO L124 PetriNetUnfolderBase]: 3469/6946 cut-off events. [2024-10-13 16:31:05,069 INFO L125 PetriNetUnfolderBase]: For 13979/14366 co-relation queries the response was YES. [2024-10-13 16:31:05,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20153 conditions, 6946 events. 3469/6946 cut-off events. For 13979/14366 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45996 event pairs, 727 based on Foata normal form. 67/6990 useless extension candidates. Maximal degree in co-relation 17120. Up to 3973 conditions per place. [2024-10-13 16:31:05,108 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-10-13 16:31:05,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-10-13 16:31:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:31:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:31:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-10-13 16:31:05,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-10-13 16:31:05,110 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-10-13 16:31:05,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-10-13 16:31:05,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:05,139 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-10-13 16:31:05,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-10-13 16:31:05,140 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-10-13 16:31:05,140 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-10-13 16:31:05,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:05,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:05,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:05,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:31:05,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:05,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash -780977057, now seen corresponding path program 1 times [2024-10-13 16:31:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311295966] [2024-10-13 16:31:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311295966] [2024-10-13 16:31:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311295966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:31:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901751113] [2024-10-13 16:31:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:05,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:05,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:05,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:31:05,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:05,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:05,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:05,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:05,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:05,933 INFO L124 PetriNetUnfolderBase]: 3507/7161 cut-off events. [2024-10-13 16:31:05,933 INFO L125 PetriNetUnfolderBase]: For 14979/15265 co-relation queries the response was YES. [2024-10-13 16:31:05,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7161 events. 3507/7161 cut-off events. For 14979/15265 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49192 event pairs, 947 based on Foata normal form. 12/7148 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place. [2024-10-13 16:31:05,971 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2024-10-13 16:31:05,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2024-10-13 16:31:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:31:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:31:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-10-13 16:31:05,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-13 16:31:05,973 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2024-10-13 16:31:05,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2024-10-13 16:31:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:06,001 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2024-10-13 16:31:06,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2024-10-13 16:31:06,001 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-10-13 16:31:06,001 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2024-10-13 16:31:06,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:06,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:06,002 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:06,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:31:06,002 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:06,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 890875085, now seen corresponding path program 1 times [2024-10-13 16:31:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:06,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372875385] [2024-10-13 16:31:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:06,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:31:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372875385] [2024-10-13 16:31:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372875385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:06,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160990354] [2024-10-13 16:31:06,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:06,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:06,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:06,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:06,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:06,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:06,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:06,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:06,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:06,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:06,586 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2024-10-13 16:31:06,586 INFO L125 PetriNetUnfolderBase]: For 16088/16336 co-relation queries the response was YES. [2024-10-13 16:31:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 7263 events. 3533/7263 cut-off events. For 16088/16336 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 50202 event pairs, 590 based on Foata normal form. 0/7262 useless extension candidates. Maximal degree in co-relation 18131. Up to 3403 conditions per place. [2024-10-13 16:31:06,623 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2024-10-13 16:31:06,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2024-10-13 16:31:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-13 16:31:06,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-13 16:31:06,624 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2024-10-13 16:31:06,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2024-10-13 16:31:06,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:06,663 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2024-10-13 16:31:06,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-10-13 16:31:06,664 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-10-13 16:31:06,664 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2024-10-13 16:31:06,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:06,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:06,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:06,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:31:06,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:06,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash 408893580, now seen corresponding path program 1 times [2024-10-13 16:31:06,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746329933] [2024-10-13 16:31:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746329933] [2024-10-13 16:31:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746329933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:06,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358720008] [2024-10-13 16:31:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:06,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:06,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:06,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:06,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:31:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:06,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:31:06,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:06,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358720008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:06,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:06,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:31:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639957337] [2024-10-13 16:31:06,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:06,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:31:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:31:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:31:06,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:06,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 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) [2024-10-13 16:31:06,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:06,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:06,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:07,824 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2024-10-13 16:31:07,824 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2024-10-13 16:31:07,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27014 conditions, 8694 events. 4337/8694 cut-off events. For 19505/19861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 58759 event pairs, 927 based on Foata normal form. 39/8708 useless extension candidates. Maximal degree in co-relation 23704. Up to 4364 conditions per place. [2024-10-13 16:31:07,951 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-10-13 16:31:07,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2024-10-13 16:31:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:31:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:31:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2024-10-13 16:31:07,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-10-13 16:31:07,953 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2024-10-13 16:31:07,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2024-10-13 16:31:07,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:07,993 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2024-10-13 16:31:07,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-10-13 16:31:07,993 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2024-10-13 16:31:07,993 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2024-10-13 16:31:07,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 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) [2024-10-13 16:31:07,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:07,994 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:08,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:08,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:08,194 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:08,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1775413116, now seen corresponding path program 1 times [2024-10-13 16:31:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:08,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063183015] [2024-10-13 16:31:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:08,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:08,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063183015] [2024-10-13 16:31:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063183015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:08,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938238213] [2024-10-13 16:31:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:08,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:08,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:31:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:08,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:31:08,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:08,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938238213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:08,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:08,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:31:08,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162469309] [2024-10-13 16:31:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:08,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:31:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:31:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:31:08,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:08,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:08,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:08,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:08,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:09,357 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2024-10-13 16:31:09,357 INFO L125 PetriNetUnfolderBase]: For 24971/25025 co-relation queries the response was YES. [2024-10-13 16:31:09,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29817 conditions, 9400 events. 4901/9400 cut-off events. For 24971/25025 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 62811 event pairs, 712 based on Foata normal form. 262/9400 useless extension candidates. Maximal degree in co-relation 28870. Up to 5331 conditions per place. [2024-10-13 16:31:09,423 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-10-13 16:31:09,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2024-10-13 16:31:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-13 16:31:09,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-13 16:31:09,424 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2024-10-13 16:31:09,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2024-10-13 16:31:09,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-10-13 16:31:09,483 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2024-10-13 16:31:09,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-13 16:31:09,484 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-10-13 16:31:09,484 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2024-10-13 16:31:09,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:09,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:09,484 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:31:09,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:31:09,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:31:09,685 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:09,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash 796768740, now seen corresponding path program 1 times [2024-10-13 16:31:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:09,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837243924] [2024-10-13 16:31:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:31:09,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837243924] [2024-10-13 16:31:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837243924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:09,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:31:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:31:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434372262] [2024-10-13 16:31:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:09,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:31:09,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 16:31:09,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:09,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:09,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 16:31:09,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:10,411 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2024-10-13 16:31:10,411 INFO L125 PetriNetUnfolderBase]: For 23394/23398 co-relation queries the response was YES. [2024-10-13 16:31:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 9002 events. 4541/9002 cut-off events. For 23394/23398 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 60833 event pairs, 901 based on Foata normal form. 262/9238 useless extension candidates. Maximal degree in co-relation 27049. Up to 4371 conditions per place. [2024-10-13 16:31:10,462 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-10-13 16:31:10,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2024-10-13 16:31:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-13 16:31:10,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-13 16:31:10,464 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2024-10-13 16:31:10,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2024-10-13 16:31:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:31:10,520 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2024-10-13 16:31:10,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-10-13 16:31:10,520 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-10-13 16:31:10,521 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2024-10-13 16:31:10,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:10,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:10,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:10,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:31:10,521 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:10,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 975367758, now seen corresponding path program 1 times [2024-10-13 16:31:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:10,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522278353] [2024-10-13 16:31:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:10,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:10,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522278353] [2024-10-13 16:31:10,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522278353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883537750] [2024-10-13 16:31:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:10,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:10,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:31:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:10,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:31:10,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:31:10,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883537750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-13 16:31:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987332364] [2024-10-13 16:31:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:10,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:31:10,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:10,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:10,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:10,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:10,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:11,807 INFO L124 PetriNetUnfolderBase]: 4880/9556 cut-off events. [2024-10-13 16:31:11,807 INFO L125 PetriNetUnfolderBase]: For 27557/27557 co-relation queries the response was YES. [2024-10-13 16:31:11,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31360 conditions, 9556 events. 4880/9556 cut-off events. For 27557/27557 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 65247 event pairs, 1082 based on Foata normal form. 111/9636 useless extension candidates. Maximal degree in co-relation 29651. Up to 3106 conditions per place. [2024-10-13 16:31:11,845 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-10-13 16:31:11,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2024-10-13 16:31:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:31:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:31:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-10-13 16:31:11,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-10-13 16:31:11,846 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2024-10-13 16:31:11,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2024-10-13 16:31:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:11,891 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2024-10-13 16:31:11,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1345, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-10-13 16:31:11,891 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-10-13 16:31:11,892 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2024-10-13 16:31:11,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:11,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:11,892 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, 1, 1, 1, 1] [2024-10-13 16:31:11,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:12,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:31:12,092 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:12,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash 838460339, now seen corresponding path program 1 times [2024-10-13 16:31:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:12,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958294471] [2024-10-13 16:31:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958294471] [2024-10-13 16:31:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958294471] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715725177] [2024-10-13 16:31:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:12,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:12,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:12,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:31:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:12,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:31:12,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:31:12,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715725177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:12,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-13 16:31:12,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103931224] [2024-10-13 16:31:12,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:12,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:31:12,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:31:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:31:12,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1345 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:13,284 INFO L124 PetriNetUnfolderBase]: 5755/11245 cut-off events. [2024-10-13 16:31:13,284 INFO L125 PetriNetUnfolderBase]: For 41510/41510 co-relation queries the response was YES. [2024-10-13 16:31:13,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37608 conditions, 11245 events. 5755/11245 cut-off events. For 41510/41510 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 78643 event pairs, 1554 based on Foata normal form. 161/11373 useless extension candidates. Maximal degree in co-relation 35448. Up to 5362 conditions per place. [2024-10-13 16:31:13,356 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 175 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-10-13 16:31:13,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2397 flow [2024-10-13 16:31:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:31:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:31:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-10-13 16:31:13,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-10-13 16:31:13,358 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 10 states and 259 transitions. [2024-10-13 16:31:13,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2397 flow [2024-10-13 16:31:13,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 227 transitions, 2357 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-10-13 16:31:13,439 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1729 flow [2024-10-13 16:31:13,439 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-10-13 16:31:13,439 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 105 predicate places. [2024-10-13 16:31:13,439 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1729 flow [2024-10-13 16:31:13,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:13,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:13,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:13,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:13,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:13,640 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:13,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1702964273, now seen corresponding path program 1 times [2024-10-13 16:31:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:13,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623438083] [2024-10-13 16:31:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:13,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:13,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623438083] [2024-10-13 16:31:13,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623438083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:13,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002747583] [2024-10-13 16:31:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:13,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:13,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:13,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:13,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:31:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:13,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:31:13,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:13,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002747583] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:13,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:13,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:31:13,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819826758] [2024-10-13 16:31:13,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:13,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:31:13,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:13,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:31:13,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:31:13,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-10-13 16:31:13,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1729 flow. Second operand has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:13,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:13,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-10-13 16:31:13,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:15,891 INFO L124 PetriNetUnfolderBase]: 7279/13539 cut-off events. [2024-10-13 16:31:15,891 INFO L125 PetriNetUnfolderBase]: For 45687/45687 co-relation queries the response was YES. [2024-10-13 16:31:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46003 conditions, 13539 events. 7279/13539 cut-off events. For 45687/45687 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 94098 event pairs, 1247 based on Foata normal form. 193/13675 useless extension candidates. Maximal degree in co-relation 44313. Up to 4548 conditions per place. [2024-10-13 16:31:15,994 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 222 selfloop transitions, 115 changer transitions 0/345 dead transitions. [2024-10-13 16:31:15,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 345 transitions, 3462 flow [2024-10-13 16:31:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 16:31:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 16:31:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 482 transitions. [2024-10-13 16:31:15,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4564393939393939 [2024-10-13 16:31:15,996 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1729 flow. Second operand 22 states and 482 transitions. [2024-10-13 16:31:15,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 345 transitions, 3462 flow [2024-10-13 16:31:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 345 transitions, 3401 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:16,104 INFO L231 Difference]: Finished difference. Result has 169 places, 161 transitions, 2272 flow [2024-10-13 16:31:16,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2272, PETRI_PLACES=169, PETRI_TRANSITIONS=161} [2024-10-13 16:31:16,105 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-10-13 16:31:16,105 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 161 transitions, 2272 flow [2024-10-13 16:31:16,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.9375) internal successors, (255), 16 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:16,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:16,106 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, 1, 1, 1] [2024-10-13 16:31:16,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:16,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:16,306 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:16,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2040370022, now seen corresponding path program 1 times [2024-10-13 16:31:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944177281] [2024-10-13 16:31:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944177281] [2024-10-13 16:31:16,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944177281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420819878] [2024-10-13 16:31:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:16,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:16,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:16,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:31:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:16,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:31:16,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:16,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420819878] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:16,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:16,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:31:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918081454] [2024-10-13 16:31:16,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:16,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:31:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:16,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:31:16,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:31:16,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:16,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 161 transitions, 2272 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:16,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:16,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:18,578 INFO L124 PetriNetUnfolderBase]: 6986/13680 cut-off events. [2024-10-13 16:31:18,579 INFO L125 PetriNetUnfolderBase]: For 65019/65019 co-relation queries the response was YES. [2024-10-13 16:31:18,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46889 conditions, 13680 events. 6986/13680 cut-off events. For 65019/65019 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 98622 event pairs, 1407 based on Foata normal form. 327/13966 useless extension candidates. Maximal degree in co-relation 44919. Up to 3569 conditions per place. [2024-10-13 16:31:18,681 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 199 selfloop transitions, 122 changer transitions 0/334 dead transitions. [2024-10-13 16:31:18,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 334 transitions, 3729 flow [2024-10-13 16:31:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 16:31:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 16:31:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 447 transitions. [2024-10-13 16:31:18,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-10-13 16:31:18,683 INFO L175 Difference]: Start difference. First operand has 169 places, 161 transitions, 2272 flow. Second operand 18 states and 447 transitions. [2024-10-13 16:31:18,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 334 transitions, 3729 flow [2024-10-13 16:31:18,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 334 transitions, 3470 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-10-13 16:31:18,824 INFO L231 Difference]: Finished difference. Result has 168 places, 170 transitions, 2451 flow [2024-10-13 16:31:18,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2451, PETRI_PLACES=168, PETRI_TRANSITIONS=170} [2024-10-13 16:31:18,825 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-10-13 16:31:18,825 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 170 transitions, 2451 flow [2024-10-13 16:31:18,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:18,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:18,825 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:18,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:19,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:19,026 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash -972866517, now seen corresponding path program 2 times [2024-10-13 16:31:19,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:19,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759408882] [2024-10-13 16:31:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:19,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759408882] [2024-10-13 16:31:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759408882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648429687] [2024-10-13 16:31:19,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:31:19,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:19,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:19,143 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:19,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:31:19,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:31:19,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:19,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:31:19,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-10-13 16:31:19,239 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:31:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648429687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:31:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:31:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-13 16:31:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133530493] [2024-10-13 16:31:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:19,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:31:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:31:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:31:19,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 16:31:19,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 170 transitions, 2451 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:19,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:19,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 16:31:19,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:20,221 INFO L124 PetriNetUnfolderBase]: 5423/10852 cut-off events. [2024-10-13 16:31:20,221 INFO L125 PetriNetUnfolderBase]: For 49225/49225 co-relation queries the response was YES. [2024-10-13 16:31:20,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37352 conditions, 10852 events. 5423/10852 cut-off events. For 49225/49225 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 74389 event pairs, 2146 based on Foata normal form. 8/10827 useless extension candidates. Maximal degree in co-relation 37303. Up to 8751 conditions per place. [2024-10-13 16:31:20,291 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 136 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-10-13 16:31:20,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 161 transitions, 2307 flow [2024-10-13 16:31:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:31:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:31:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-13 16:31:20,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-13 16:31:20,292 INFO L175 Difference]: Start difference. First operand has 168 places, 170 transitions, 2451 flow. Second operand 4 states and 119 transitions. [2024-10-13 16:31:20,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 161 transitions, 2307 flow [2024-10-13 16:31:20,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1988 flow, removed 99 selfloop flow, removed 13 redundant places. [2024-10-13 16:31:20,382 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 1665 flow [2024-10-13 16:31:20,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1665, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-10-13 16:31:20,382 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 110 predicate places. [2024-10-13 16:31:20,382 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 1665 flow [2024-10-13 16:31:20,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:20,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:20,383 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:20,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:31:20,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 16:31:20,583 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:20,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 153677078, now seen corresponding path program 1 times [2024-10-13 16:31:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:20,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351188943] [2024-10-13 16:31:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:20,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351188943] [2024-10-13 16:31:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351188943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948838468] [2024-10-13 16:31:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:20,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:20,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:20,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:20,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:31:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:20,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 16:31:20,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948838468] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:20,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:20,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-10-13 16:31:20,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813512744] [2024-10-13 16:31:20,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:20,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:31:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:31:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:31:20,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:31:20,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 1665 flow. Second operand has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:20,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:20,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:31:20,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:23,035 INFO L124 PetriNetUnfolderBase]: 8979/17104 cut-off events. [2024-10-13 16:31:23,035 INFO L125 PetriNetUnfolderBase]: For 48060/48060 co-relation queries the response was YES. [2024-10-13 16:31:23,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55815 conditions, 17104 events. 8979/17104 cut-off events. For 48060/48060 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 116921 event pairs, 1165 based on Foata normal form. 162/17233 useless extension candidates. Maximal degree in co-relation 55768. Up to 3800 conditions per place. [2024-10-13 16:31:23,112 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 297 selfloop transitions, 155 changer transitions 0/461 dead transitions. [2024-10-13 16:31:23,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 461 transitions, 4578 flow [2024-10-13 16:31:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 16:31:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 16:31:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 623 transitions. [2024-10-13 16:31:23,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4807098765432099 [2024-10-13 16:31:23,113 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 1665 flow. Second operand 27 states and 623 transitions. [2024-10-13 16:31:23,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 461 transitions, 4578 flow [2024-10-13 16:31:23,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 461 transitions, 4566 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 16:31:23,229 INFO L231 Difference]: Finished difference. Result has 187 places, 225 transitions, 3165 flow [2024-10-13 16:31:23,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3165, PETRI_PLACES=187, PETRI_TRANSITIONS=225} [2024-10-13 16:31:23,230 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 141 predicate places. [2024-10-13 16:31:23,230 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 225 transitions, 3165 flow [2024-10-13 16:31:23,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:23,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:23,230 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-13 16:31:23,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 16:31:23,431 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1656899403, now seen corresponding path program 2 times [2024-10-13 16:31:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110188319] [2024-10-13 16:31:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110188319] [2024-10-13 16:31:23,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110188319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47542238] [2024-10-13 16:31:23,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:31:23,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:23,573 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:23,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:31:23,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:31:23,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:23,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 16:31:23,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:23,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47542238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:23,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-13 16:31:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890145832] [2024-10-13 16:31:23,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:23,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:31:23,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:31:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:31:23,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-13 16:31:23,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 225 transitions, 3165 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:23,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:23,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-13 16:31:23,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:26,892 INFO L124 PetriNetUnfolderBase]: 10936/21600 cut-off events. [2024-10-13 16:31:26,892 INFO L125 PetriNetUnfolderBase]: For 83079/83079 co-relation queries the response was YES. [2024-10-13 16:31:26,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74019 conditions, 21600 events. 10936/21600 cut-off events. For 83079/83079 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 155606 event pairs, 3598 based on Foata normal form. 144/21677 useless extension candidates. Maximal degree in co-relation 73967. Up to 11291 conditions per place. [2024-10-13 16:31:27,028 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 489 selfloop transitions, 54 changer transitions 0/561 dead transitions. [2024-10-13 16:31:27,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 561 transitions, 6039 flow [2024-10-13 16:31:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 16:31:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 16:31:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 696 transitions. [2024-10-13 16:31:27,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-10-13 16:31:27,030 INFO L175 Difference]: Start difference. First operand has 187 places, 225 transitions, 3165 flow. Second operand 22 states and 696 transitions. [2024-10-13 16:31:27,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 561 transitions, 6039 flow [2024-10-13 16:31:27,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 561 transitions, 5750 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-10-13 16:31:27,482 INFO L231 Difference]: Finished difference. Result has 204 places, 251 transitions, 3503 flow [2024-10-13 16:31:27,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3503, PETRI_PLACES=204, PETRI_TRANSITIONS=251} [2024-10-13 16:31:27,482 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 158 predicate places. [2024-10-13 16:31:27,482 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 251 transitions, 3503 flow [2024-10-13 16:31:27,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:27,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:27,483 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:27,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 16:31:27,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 16:31:27,683 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:27,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash -908551965, now seen corresponding path program 3 times [2024-10-13 16:31:27,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:27,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900246337] [2024-10-13 16:31:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:27,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 16:31:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900246337] [2024-10-13 16:31:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900246337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581734958] [2024-10-13 16:31:27,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:31:27,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:27,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:27,832 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:27,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:31:27,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 16:31:27,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:27,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 16:31:27,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:27,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581734958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:28,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-10-13 16:31:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395265773] [2024-10-13 16:31:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:28,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:31:28,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:31:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:31:28,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:28,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 251 transitions, 3503 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 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) [2024-10-13 16:31:28,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:28,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:28,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:32,583 INFO L124 PetriNetUnfolderBase]: 14867/29145 cut-off events. [2024-10-13 16:31:32,583 INFO L125 PetriNetUnfolderBase]: For 97854/97854 co-relation queries the response was YES. [2024-10-13 16:31:32,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97795 conditions, 29145 events. 14867/29145 cut-off events. For 97854/97854 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 219918 event pairs, 2614 based on Foata normal form. 228/29296 useless extension candidates. Maximal degree in co-relation 97739. Up to 5898 conditions per place. [2024-10-13 16:31:32,771 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 364 selfloop transitions, 235 changer transitions 0/613 dead transitions. [2024-10-13 16:31:32,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 613 transitions, 7199 flow [2024-10-13 16:31:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:31:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:31:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 659 transitions. [2024-10-13 16:31:32,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5280448717948718 [2024-10-13 16:31:32,773 INFO L175 Difference]: Start difference. First operand has 204 places, 251 transitions, 3503 flow. Second operand 26 states and 659 transitions. [2024-10-13 16:31:32,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 613 transitions, 7199 flow [2024-10-13 16:31:33,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 613 transitions, 7095 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-10-13 16:31:33,134 INFO L231 Difference]: Finished difference. Result has 232 places, 354 transitions, 5745 flow [2024-10-13 16:31:33,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5745, PETRI_PLACES=232, PETRI_TRANSITIONS=354} [2024-10-13 16:31:33,135 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 186 predicate places. [2024-10-13 16:31:33,135 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 354 transitions, 5745 flow [2024-10-13 16:31:33,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 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) [2024-10-13 16:31:33,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:33,135 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:33,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 16:31:33,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 16:31:33,336 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:33,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1749234605, now seen corresponding path program 4 times [2024-10-13 16:31:33,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:33,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954525070] [2024-10-13 16:31:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:33,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954525070] [2024-10-13 16:31:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954525070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46555326] [2024-10-13 16:31:33,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:31:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:33,706 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:33,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:31:33,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:31:33,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:31:33,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 16:31:33,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:33,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:31:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46555326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:34,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:34,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-13 16:31:34,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658256396] [2024-10-13 16:31:34,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:34,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:31:34,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:31:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:31:34,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:34,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 354 transitions, 5745 flow. Second operand has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:34,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:34,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:41,476 INFO L124 PetriNetUnfolderBase]: 21355/41621 cut-off events. [2024-10-13 16:31:41,477 INFO L125 PetriNetUnfolderBase]: For 178634/178634 co-relation queries the response was YES. [2024-10-13 16:31:41,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145035 conditions, 41621 events. 21355/41621 cut-off events. For 178634/178634 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 331055 event pairs, 3635 based on Foata normal form. 296/41792 useless extension candidates. Maximal degree in co-relation 144970. Up to 6510 conditions per place. [2024-10-13 16:31:41,811 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 479 selfloop transitions, 418 changer transitions 0/911 dead transitions. [2024-10-13 16:31:41,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 911 transitions, 11970 flow [2024-10-13 16:31:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-13 16:31:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-13 16:31:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 947 transitions. [2024-10-13 16:31:41,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5332207207207207 [2024-10-13 16:31:41,813 INFO L175 Difference]: Start difference. First operand has 232 places, 354 transitions, 5745 flow. Second operand 37 states and 947 transitions. [2024-10-13 16:31:41,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 911 transitions, 11970 flow [2024-10-13 16:31:42,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 911 transitions, 11538 flow, removed 108 selfloop flow, removed 11 redundant places. [2024-10-13 16:31:42,835 INFO L231 Difference]: Finished difference. Result has 267 places, 529 transitions, 9524 flow [2024-10-13 16:31:42,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5347, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9524, PETRI_PLACES=267, PETRI_TRANSITIONS=529} [2024-10-13 16:31:42,836 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 221 predicate places. [2024-10-13 16:31:42,836 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 529 transitions, 9524 flow [2024-10-13 16:31:42,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:42,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:42,836 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:42,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:43,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:43,037 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:31:43,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash -460234144, now seen corresponding path program 1 times [2024-10-13 16:31:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:43,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853536932] [2024-10-13 16:31:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:43,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 16:31:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853536932] [2024-10-13 16:31:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853536932] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796525597] [2024-10-13 16:31:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:43,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:43,308 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:43,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:31:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:43,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 16:31:43,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 16:31:43,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 16:31:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796525597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:31:43,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:31:43,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-13 16:31:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267295334] [2024-10-13 16:31:43,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:31:43,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:31:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:31:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:31:43,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 16:31:43,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 529 transitions, 9524 flow. Second operand has 26 states, 26 states have (on average 18.46153846153846) internal successors, (480), 26 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:43,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:43,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 16:31:43,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:57,340 INFO L124 PetriNetUnfolderBase]: 34967/68278 cut-off events. [2024-10-13 16:31:57,341 INFO L125 PetriNetUnfolderBase]: For 348239/348239 co-relation queries the response was YES. [2024-10-13 16:31:58,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243683 conditions, 68278 events. 34967/68278 cut-off events. For 348239/348239 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 587351 event pairs, 6085 based on Foata normal form. 620/68670 useless extension candidates. Maximal degree in co-relation 243612. Up to 10727 conditions per place. [2024-10-13 16:31:58,204 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 432 selfloop transitions, 781 changer transitions 0/1227 dead transitions. [2024-10-13 16:31:58,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 1227 transitions, 19840 flow [2024-10-13 16:31:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-13 16:31:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-13 16:31:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 880 transitions. [2024-10-13 16:31:58,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-13 16:31:58,206 INFO L175 Difference]: Start difference. First operand has 267 places, 529 transitions, 9524 flow. Second operand 35 states and 880 transitions. [2024-10-13 16:31:58,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 1227 transitions, 19840 flow [2024-10-13 16:32:00,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1227 transitions, 19382 flow, removed 132 selfloop flow, removed 8 redundant places. [2024-10-13 16:32:00,865 INFO L231 Difference]: Finished difference. Result has 300 places, 881 transitions, 17814 flow [2024-10-13 16:32:00,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9129, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=457, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=17814, PETRI_PLACES=300, PETRI_TRANSITIONS=881} [2024-10-13 16:32:00,866 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 254 predicate places. [2024-10-13 16:32:00,866 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 881 transitions, 17814 flow [2024-10-13 16:32:00,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.46153846153846) internal successors, (480), 26 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:32:00,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:32:00,866 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:32:00,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 16:32:01,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 16:32:01,067 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-13 16:32:01,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:32:01,067 INFO L85 PathProgramCache]: Analyzing trace with hash 773763366, now seen corresponding path program 1 times [2024-10-13 16:32:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:32:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409372115] [2024-10-13 16:32:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:32:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:32:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:32:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 16:32:01,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:32:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409372115] [2024-10-13 16:32:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409372115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:32:01,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868759697] [2024-10-13 16:32:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:32:01,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:32:01,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:32:01,290 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:32:01,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 16:32:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:32:01,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 16:32:01,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:32:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 1 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 16:32:01,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:32:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 1 proven. 104 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-13 16:32:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868759697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:32:01,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:32:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2024-10-13 16:32:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131868957] [2024-10-13 16:32:01,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:32:01,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:32:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:32:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:32:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-10-13 16:32:01,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 16:32:01,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 881 transitions, 17814 flow. Second operand has 24 states, 24 states have (on average 18.083333333333332) internal successors, (434), 24 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:32:01,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:32:01,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 16:32:01,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand