./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/queue.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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:32:51,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:32:51,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:32:51,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:32:51,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:32:51,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:32:51,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:32:51,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:32:51,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:32:51,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:32:51,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:32:51,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:32:51,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:32:51,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:32:51,537 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:32:51,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:32:51,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:32:51,540 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:32:51,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:32:51,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:32:51,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:32:51,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:32:51,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:32:51,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:32:51,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:32:51,546 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:32:51,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:32:51,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:32:51,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:32:51,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:32:51,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:32:51,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:32:51,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:32:51,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:32:51,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:51,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:32:51,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:32:51,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:32:51,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:32:51,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:32:51,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:32:51,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:32:51,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:32:51,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:32:51,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-17 07:32:51,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:32:51,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:32:51,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:32:51,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:32:51,843 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:32:51,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-17 07:32:53,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:32:53,512 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:32:53,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-17 07:32:53,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d5a70c2/d664c144b656479c9be81dbb1ccc8611/FLAG0a0fe3543 [2024-11-17 07:32:53,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76d5a70c2/d664c144b656479c9be81dbb1ccc8611 [2024-11-17 07:32:53,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:32:53,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:32:53,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:53,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:32:53,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:32:53,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:53" (1/1) ... [2024-11-17 07:32:53,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad8a1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:53, skipping insertion in model container [2024-11-17 07:32:53,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:32:53" (1/1) ... [2024-11-17 07:32:53,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:32:54,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:54,172 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:32:54,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:32:54,314 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:32:54,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54 WrapperNode [2024-11-17 07:32:54,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:32:54,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:54,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:32:54,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:32:54,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,394 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 311 [2024-11-17 07:32:54,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:32:54,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:32:54,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:32:54,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:32:54,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,445 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-17 07:32:54,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,456 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:32:54,464 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:32:54,464 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:32:54,464 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:32:54,465 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (1/1) ... [2024-11-17 07:32:54,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:32:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:32:54,528 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) [2024-11-17 07:32:54,532 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 [2024-11-17 07:32:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:32:54,593 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:32:54,593 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:32:54,594 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:32:54,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:32:54,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:32:54,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:32:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:32:54,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:32:54,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:32:54,599 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:32:54,746 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:32:54,748 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:32:55,184 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:32:55,184 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:32:55,545 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:32:55,546 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:32:55,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:55 BoogieIcfgContainer [2024-11-17 07:32:55,547 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:32:55,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:32:55,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:32:55,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:32:55,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:32:53" (1/3) ... [2024-11-17 07:32:55,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e59bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:55, skipping insertion in model container [2024-11-17 07:32:55,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:32:54" (2/3) ... [2024-11-17 07:32:55,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e59bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:32:55, skipping insertion in model container [2024-11-17 07:32:55,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:32:55" (3/3) ... [2024-11-17 07:32:55,559 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-17 07:32:55,578 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:32:55,579 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-17 07:32:55,579 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:32:55,675 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:32:55,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 198 flow [2024-11-17 07:32:55,769 INFO L124 PetriNetUnfolderBase]: 12/90 cut-off events. [2024-11-17 07:32:55,770 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:32:55,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 12/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 232 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2024-11-17 07:32:55,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 92 transitions, 198 flow [2024-11-17 07:32:55,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 86 transitions, 181 flow [2024-11-17 07:32:55,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:32:55,798 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;@3b8fbb0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:32:55,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-17 07:32:55,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:32:55,809 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2024-11-17 07:32:55,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:32:55,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:55,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:55,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:32:55,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1328424730, now seen corresponding path program 1 times [2024-11-17 07:32:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:55,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182791513] [2024-11-17 07:32:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182791513] [2024-11-17 07:32:56,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182791513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:56,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:56,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:32:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659623503] [2024-11-17 07:32:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:56,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:56,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:56,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:32:56,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:56,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:56,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:32:56,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:57,174 INFO L124 PetriNetUnfolderBase]: 1197/2556 cut-off events. [2024-11-17 07:32:57,175 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-17 07:32:57,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2556 events. 1197/2556 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16733 event pairs, 199 based on Foata normal form. 131/2261 useless extension candidates. Maximal degree in co-relation 4404. Up to 1550 conditions per place. [2024-11-17 07:32:57,202 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 73 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-11-17 07:32:57,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 401 flow [2024-11-17 07:32:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:32:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:32:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-17 07:32:57,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6331521739130435 [2024-11-17 07:32:57,221 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 181 flow. Second operand 4 states and 233 transitions. [2024-11-17 07:32:57,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 401 flow [2024-11-17 07:32:57,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:57,233 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 212 flow [2024-11-17 07:32:57,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-11-17 07:32:57,240 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2024-11-17 07:32:57,242 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 212 flow [2024-11-17 07:32:57,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:57,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:57,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:32:57,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:32:57,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1768505603, now seen corresponding path program 1 times [2024-11-17 07:32:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:57,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131752567] [2024-11-17 07:32:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:57,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:57,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131752567] [2024-11-17 07:32:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131752567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:57,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:57,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:32:57,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244548005] [2024-11-17 07:32:57,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:57,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:57,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:32:57,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:57,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:32:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:58,116 INFO L124 PetriNetUnfolderBase]: 1203/2595 cut-off events. [2024-11-17 07:32:58,116 INFO L125 PetriNetUnfolderBase]: For 450/453 co-relation queries the response was YES. [2024-11-17 07:32:58,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 2595 events. 1203/2595 cut-off events. For 450/453 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 17283 event pairs, 256 based on Foata normal form. 38/2261 useless extension candidates. Maximal degree in co-relation 4298. Up to 1694 conditions per place. [2024-11-17 07:32:58,135 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 81 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-11-17 07:32:58,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 466 flow [2024-11-17 07:32:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:32:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:32:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-17 07:32:58,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5956521739130435 [2024-11-17 07:32:58,138 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 212 flow. Second operand 5 states and 274 transitions. [2024-11-17 07:32:58,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 466 flow [2024-11-17 07:32:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:32:58,146 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 229 flow [2024-11-17 07:32:58,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2024-11-17 07:32:58,148 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2024-11-17 07:32:58,148 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 229 flow [2024-11-17 07:32:58,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:58,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:58,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:58,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:32:58,151 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:32:58,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1273190017, now seen corresponding path program 1 times [2024-11-17 07:32:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155455472] [2024-11-17 07:32:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:58,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:58,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155455472] [2024-11-17 07:32:58,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155455472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:58,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:58,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892968056] [2024-11-17 07:32:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:58,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:32:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:32:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:32:58,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:32:58,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:58,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:58,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:32:58,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:58,960 INFO L124 PetriNetUnfolderBase]: 1283/2705 cut-off events. [2024-11-17 07:32:58,960 INFO L125 PetriNetUnfolderBase]: For 523/539 co-relation queries the response was YES. [2024-11-17 07:32:58,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 2705 events. 1283/2705 cut-off events. For 523/539 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 17985 event pairs, 258 based on Foata normal form. 40/2337 useless extension candidates. Maximal degree in co-relation 4599. Up to 1740 conditions per place. [2024-11-17 07:32:58,976 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 102 selfloop transitions, 11 changer transitions 0/148 dead transitions. [2024-11-17 07:32:58,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 595 flow [2024-11-17 07:32:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:32:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:32:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 375 transitions. [2024-11-17 07:32:58,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822981366459627 [2024-11-17 07:32:58,980 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 229 flow. Second operand 7 states and 375 transitions. [2024-11-17 07:32:58,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 595 flow [2024-11-17 07:32:58,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 148 transitions, 581 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 07:32:58,987 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 284 flow [2024-11-17 07:32:58,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-17 07:32:58,989 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2024-11-17 07:32:58,990 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 284 flow [2024-11-17 07:32:58,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:58,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:58,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:58,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:32:58,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:32:58,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:58,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1865254487, now seen corresponding path program 1 times [2024-11-17 07:32:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:58,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577449644] [2024-11-17 07:32:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:58,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:59,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:59,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577449644] [2024-11-17 07:32:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577449644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:59,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:59,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:32:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879627431] [2024-11-17 07:32:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:59,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:32:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:32:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:32:59,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 92 [2024-11-17 07:32:59,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:59,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:59,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 92 [2024-11-17 07:32:59,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:32:59,386 INFO L124 PetriNetUnfolderBase]: 961/2368 cut-off events. [2024-11-17 07:32:59,386 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-11-17 07:32:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 2368 events. 961/2368 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14759 event pairs, 456 based on Foata normal form. 39/2066 useless extension candidates. Maximal degree in co-relation 4216. Up to 844 conditions per place. [2024-11-17 07:32:59,405 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 62 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-17 07:32:59,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 376 flow [2024-11-17 07:32:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:32:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:32:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-17 07:32:59,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-11-17 07:32:59,407 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 284 flow. Second operand 3 states and 189 transitions. [2024-11-17 07:32:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 376 flow [2024-11-17 07:32:59,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 337 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-17 07:32:59,416 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 177 flow [2024-11-17 07:32:59,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-17 07:32:59,417 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -3 predicate places. [2024-11-17 07:32:59,417 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 177 flow [2024-11-17 07:32:59,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:59,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:32:59,418 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:32:59,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:32:59,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:32:59,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:32:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1508194042, now seen corresponding path program 1 times [2024-11-17 07:32:59,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:32:59,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083539962] [2024-11-17 07:32:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:32:59,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:32:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:32:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:32:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:32:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083539962] [2024-11-17 07:32:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083539962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:32:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:32:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:32:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7682470] [2024-11-17 07:32:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:32:59,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:32:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:32:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:32:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:32:59,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2024-11-17 07:32:59,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:32:59,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:32:59,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2024-11-17 07:32:59,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:00,107 INFO L124 PetriNetUnfolderBase]: 1883/4314 cut-off events. [2024-11-17 07:33:00,108 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-11-17 07:33:00,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7546 conditions, 4314 events. 1883/4314 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29126 event pairs, 989 based on Foata normal form. 130/3868 useless extension candidates. Maximal degree in co-relation 7541. Up to 2027 conditions per place. [2024-11-17 07:33:00,134 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 111 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-11-17 07:33:00,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 146 transitions, 554 flow [2024-11-17 07:33:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-17 07:33:00,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7228260869565217 [2024-11-17 07:33:00,136 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 177 flow. Second operand 4 states and 266 transitions. [2024-11-17 07:33:00,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 146 transitions, 554 flow [2024-11-17 07:33:00,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:33:00,144 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 198 flow [2024-11-17 07:33:00,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2024-11-17 07:33:00,145 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2024-11-17 07:33:00,146 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 198 flow [2024-11-17 07:33:00,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:00,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:00,147 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] [2024-11-17 07:33:00,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:33:00,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:00,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:00,150 INFO L85 PathProgramCache]: Analyzing trace with hash -600624948, now seen corresponding path program 1 times [2024-11-17 07:33:00,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:00,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065838266] [2024-11-17 07:33:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:00,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:00,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065838266] [2024-11-17 07:33:00,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065838266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:00,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:00,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:33:00,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745181049] [2024-11-17 07:33:00,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:00,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:33:00,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:00,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:33:00,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:33:00,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 92 [2024-11-17 07:33:00,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:00,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:00,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 92 [2024-11-17 07:33:00,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:00,948 INFO L124 PetriNetUnfolderBase]: 1607/3811 cut-off events. [2024-11-17 07:33:00,948 INFO L125 PetriNetUnfolderBase]: For 690/802 co-relation queries the response was YES. [2024-11-17 07:33:00,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7037 conditions, 3811 events. 1607/3811 cut-off events. For 690/802 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 25925 event pairs, 259 based on Foata normal form. 0/3317 useless extension candidates. Maximal degree in co-relation 7030. Up to 2233 conditions per place. [2024-11-17 07:33:00,981 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 74 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2024-11-17 07:33:00,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 468 flow [2024-11-17 07:33:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:33:00,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:33:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 276 transitions. [2024-11-17 07:33:00,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-17 07:33:00,983 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 198 flow. Second operand 5 states and 276 transitions. [2024-11-17 07:33:00,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 468 flow [2024-11-17 07:33:00,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:33:00,987 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 204 flow [2024-11-17 07:33:00,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-11-17 07:33:00,988 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 4 predicate places. [2024-11-17 07:33:00,988 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 204 flow [2024-11-17 07:33:00,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:00,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:00,989 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, 1] [2024-11-17 07:33:00,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:33:00,989 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:00,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1923690455, now seen corresponding path program 1 times [2024-11-17 07:33:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108424012] [2024-11-17 07:33:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:01,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:01,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108424012] [2024-11-17 07:33:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108424012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 07:33:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712522905] [2024-11-17 07:33:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:01,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:33:01,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:33:01,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:01,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-17 07:33:01,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:01,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:01,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-17 07:33:01,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:02,790 INFO L124 PetriNetUnfolderBase]: 2180/4741 cut-off events. [2024-11-17 07:33:02,790 INFO L125 PetriNetUnfolderBase]: For 809/953 co-relation queries the response was YES. [2024-11-17 07:33:02,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 4741 events. 2180/4741 cut-off events. For 809/953 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 32300 event pairs, 410 based on Foata normal form. 22/4179 useless extension candidates. Maximal degree in co-relation 9172. Up to 2293 conditions per place. [2024-11-17 07:33:02,828 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 133 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2024-11-17 07:33:02,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 172 transitions, 771 flow [2024-11-17 07:33:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:33:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:33:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 422 transitions. [2024-11-17 07:33:02,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-11-17 07:33:02,831 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 204 flow. Second operand 9 states and 422 transitions. [2024-11-17 07:33:02,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 172 transitions, 771 flow [2024-11-17 07:33:02,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:02,835 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 231 flow [2024-11-17 07:33:02,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=231, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2024-11-17 07:33:02,836 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 11 predicate places. [2024-11-17 07:33:02,836 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 231 flow [2024-11-17 07:33:02,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:02,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:02,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:02,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:33:02,839 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1182005547, now seen corresponding path program 1 times [2024-11-17 07:33:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:02,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450975477] [2024-11-17 07:33:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:02,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450975477] [2024-11-17 07:33:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450975477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:02,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700569923] [2024-11-17 07:33:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:02,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:02,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:02,931 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) [2024-11-17 07:33:02,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:33:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:03,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:33:03,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:03,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:03,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700569923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:03,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:03,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:33:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060347918] [2024-11-17 07:33:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:03,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:33:03,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:03,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:33:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:33:03,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:33:03,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:03,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:03,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:33:03,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:03,711 INFO L124 PetriNetUnfolderBase]: 2112/4364 cut-off events. [2024-11-17 07:33:03,713 INFO L125 PetriNetUnfolderBase]: For 876/966 co-relation queries the response was YES. [2024-11-17 07:33:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8994 conditions, 4364 events. 2112/4364 cut-off events. For 876/966 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 28332 event pairs, 103 based on Foata normal form. 77/4068 useless extension candidates. Maximal degree in co-relation 8985. Up to 2159 conditions per place. [2024-11-17 07:33:03,740 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 104 selfloop transitions, 5 changer transitions 0/141 dead transitions. [2024-11-17 07:33:03,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 613 flow [2024-11-17 07:33:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-11-17 07:33:03,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6711956521739131 [2024-11-17 07:33:03,743 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 231 flow. Second operand 4 states and 247 transitions. [2024-11-17 07:33:03,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 613 flow [2024-11-17 07:33:03,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:03,748 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 229 flow [2024-11-17 07:33:03,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-11-17 07:33:03,750 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2024-11-17 07:33:03,751 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 229 flow [2024-11-17 07:33:03,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:03,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:03,751 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, 1, 1] [2024-11-17 07:33:03,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:03,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:03,956 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:03,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash 495138796, now seen corresponding path program 1 times [2024-11-17 07:33:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119417977] [2024-11-17 07:33:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:04,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119417977] [2024-11-17 07:33:04,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119417977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:04,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:04,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 07:33:04,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610488863] [2024-11-17 07:33:04,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:04,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:33:04,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:33:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:04,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-17 07:33:04,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:04,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:04,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-17 07:33:04,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:05,596 INFO L124 PetriNetUnfolderBase]: 2148/4678 cut-off events. [2024-11-17 07:33:05,596 INFO L125 PetriNetUnfolderBase]: For 2138/2206 co-relation queries the response was YES. [2024-11-17 07:33:05,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 4678 events. 2148/4678 cut-off events. For 2138/2206 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 31904 event pairs, 410 based on Foata normal form. 22/4194 useless extension candidates. Maximal degree in co-relation 9790. Up to 2293 conditions per place. [2024-11-17 07:33:05,634 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 132 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2024-11-17 07:33:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 170 transitions, 854 flow [2024-11-17 07:33:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:33:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:33:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 421 transitions. [2024-11-17 07:33:05,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5084541062801933 [2024-11-17 07:33:05,639 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 229 flow. Second operand 9 states and 421 transitions. [2024-11-17 07:33:05,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 170 transitions, 854 flow [2024-11-17 07:33:05,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 170 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:05,646 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 228 flow [2024-11-17 07:33:05,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2024-11-17 07:33:05,648 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2024-11-17 07:33:05,648 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 228 flow [2024-11-17 07:33:05,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:05,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:05,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:05,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:33:05,651 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:05,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2012532913, now seen corresponding path program 1 times [2024-11-17 07:33:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122351553] [2024-11-17 07:33:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:33:05,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:05,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122351553] [2024-11-17 07:33:05,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122351553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:05,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:05,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:05,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793232514] [2024-11-17 07:33:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:05,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:05,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:05,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:33:05,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:05,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:05,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:33:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:06,199 INFO L124 PetriNetUnfolderBase]: 1983/4356 cut-off events. [2024-11-17 07:33:06,200 INFO L125 PetriNetUnfolderBase]: For 1082/1130 co-relation queries the response was YES. [2024-11-17 07:33:06,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 4356 events. 1983/4356 cut-off events. For 1082/1130 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 29320 event pairs, 433 based on Foata normal form. 0/3988 useless extension candidates. Maximal degree in co-relation 8752. Up to 1851 conditions per place. [2024-11-17 07:33:06,229 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 97 selfloop transitions, 6 changer transitions 6/140 dead transitions. [2024-11-17 07:33:06,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 620 flow [2024-11-17 07:33:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-11-17 07:33:06,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6711956521739131 [2024-11-17 07:33:06,231 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 228 flow. Second operand 4 states and 247 transitions. [2024-11-17 07:33:06,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 620 flow [2024-11-17 07:33:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 586 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:33:06,237 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 228 flow [2024-11-17 07:33:06,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-11-17 07:33:06,237 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 10 predicate places. [2024-11-17 07:33:06,237 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 228 flow [2024-11-17 07:33:06,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:06,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:06,238 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, 1, 1, 1] [2024-11-17 07:33:06,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:33:06,238 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:06,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1830596500, now seen corresponding path program 1 times [2024-11-17 07:33:06,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:06,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517022986] [2024-11-17 07:33:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:06,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517022986] [2024-11-17 07:33:06,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517022986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:06,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:06,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:06,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590225674] [2024-11-17 07:33:06,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:06,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:06,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:06,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:06,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-17 07:33:06,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:06,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:06,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-17 07:33:06,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:06,897 INFO L124 PetriNetUnfolderBase]: 2832/6027 cut-off events. [2024-11-17 07:33:06,897 INFO L125 PetriNetUnfolderBase]: For 3490/3500 co-relation queries the response was YES. [2024-11-17 07:33:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 6027 events. 2832/6027 cut-off events. For 3490/3500 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 43465 event pairs, 1544 based on Foata normal form. 144/5755 useless extension candidates. Maximal degree in co-relation 12942. Up to 3624 conditions per place. [2024-11-17 07:33:06,943 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 93 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-11-17 07:33:06,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 582 flow [2024-11-17 07:33:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-11-17 07:33:06,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-11-17 07:33:06,945 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 228 flow. Second operand 4 states and 236 transitions. [2024-11-17 07:33:06,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 582 flow [2024-11-17 07:33:06,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:33:06,954 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 248 flow [2024-11-17 07:33:06,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2024-11-17 07:33:06,957 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2024-11-17 07:33:06,957 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 248 flow [2024-11-17 07:33:06,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:06,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:06,958 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, 1, 1, 1, 1] [2024-11-17 07:33:06,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:33:06,958 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:06,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -912960590, now seen corresponding path program 1 times [2024-11-17 07:33:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:06,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053556629] [2024-11-17 07:33:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:06,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:07,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053556629] [2024-11-17 07:33:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053556629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:07,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 07:33:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787385599] [2024-11-17 07:33:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:07,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:33:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:33:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:07,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-17 07:33:07,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 37.5) internal successors, (300), 8 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:07,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:07,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-17 07:33:07,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:08,425 INFO L124 PetriNetUnfolderBase]: 2839/6018 cut-off events. [2024-11-17 07:33:08,425 INFO L125 PetriNetUnfolderBase]: For 2450/2516 co-relation queries the response was YES. [2024-11-17 07:33:08,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13335 conditions, 6018 events. 2839/6018 cut-off events. For 2450/2516 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 43080 event pairs, 446 based on Foata normal form. 0/5576 useless extension candidates. Maximal degree in co-relation 13321. Up to 2237 conditions per place. [2024-11-17 07:33:08,465 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 149 selfloop transitions, 15 changer transitions 1/195 dead transitions. [2024-11-17 07:33:08,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 195 transitions, 984 flow [2024-11-17 07:33:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:33:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:33:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2024-11-17 07:33:08,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5358695652173913 [2024-11-17 07:33:08,467 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 248 flow. Second operand 10 states and 493 transitions. [2024-11-17 07:33:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 195 transitions, 984 flow [2024-11-17 07:33:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 981 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:33:08,477 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 320 flow [2024-11-17 07:33:08,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=320, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-11-17 07:33:08,480 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 23 predicate places. [2024-11-17 07:33:08,480 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 320 flow [2024-11-17 07:33:08,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.5) internal successors, (300), 8 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:08,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:08,481 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, 1, 1, 1, 1, 1] [2024-11-17 07:33:08,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:33:08,481 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:08,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1762993550, now seen corresponding path program 1 times [2024-11-17 07:33:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:08,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953811061] [2024-11-17 07:33:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:08,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:09,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:09,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953811061] [2024-11-17 07:33:09,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953811061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:09,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:09,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 07:33:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801802328] [2024-11-17 07:33:09,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:09,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:33:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:09,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:33:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:09,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:33:09,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 320 flow. Second operand has 8 states, 8 states have (on average 39.375) internal successors, (315), 8 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:09,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:09,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:33:09,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:09,823 INFO L124 PetriNetUnfolderBase]: 2724/5947 cut-off events. [2024-11-17 07:33:09,823 INFO L125 PetriNetUnfolderBase]: For 3253/3319 co-relation queries the response was YES. [2024-11-17 07:33:09,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14319 conditions, 5947 events. 2724/5947 cut-off events. For 3253/3319 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 43378 event pairs, 462 based on Foata normal form. 44/5817 useless extension candidates. Maximal degree in co-relation 14303. Up to 2571 conditions per place. [2024-11-17 07:33:09,859 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 149 selfloop transitions, 14 changer transitions 1/197 dead transitions. [2024-11-17 07:33:09,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 1059 flow [2024-11-17 07:33:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:33:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:33:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 509 transitions. [2024-11-17 07:33:09,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5532608695652174 [2024-11-17 07:33:09,862 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 320 flow. Second operand 10 states and 509 transitions. [2024-11-17 07:33:09,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 1059 flow [2024-11-17 07:33:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 197 transitions, 1047 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:33:09,873 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 370 flow [2024-11-17 07:33:09,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=370, PETRI_PLACES=111, PETRI_TRANSITIONS=92} [2024-11-17 07:33:09,874 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 29 predicate places. [2024-11-17 07:33:09,874 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 370 flow [2024-11-17 07:33:09,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.375) internal successors, (315), 8 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:09,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:09,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:09,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:33:09,875 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:09,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 417181530, now seen corresponding path program 1 times [2024-11-17 07:33:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407753411] [2024-11-17 07:33:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:09,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:09,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407753411] [2024-11-17 07:33:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407753411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115698231] [2024-11-17 07:33:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:09,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:09,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:09,962 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) [2024-11-17 07:33:09,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:33:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:10,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:33:10,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:10,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:33:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115698231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:33:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:33:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847428277] [2024-11-17 07:33:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:10,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:33:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:33:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:33:10,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-17 07:33:10,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 92 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:10,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:10,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-17 07:33:10,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:10,938 INFO L124 PetriNetUnfolderBase]: 3140/6349 cut-off events. [2024-11-17 07:33:10,939 INFO L125 PetriNetUnfolderBase]: For 4451/4485 co-relation queries the response was YES. [2024-11-17 07:33:10,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 6349 events. 3140/6349 cut-off events. For 4451/4485 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 44367 event pairs, 704 based on Foata normal form. 150/6231 useless extension candidates. Maximal degree in co-relation 16241. Up to 3424 conditions per place. [2024-11-17 07:33:10,980 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 84 selfloop transitions, 5 changer transitions 0/118 dead transitions. [2024-11-17 07:33:10,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 118 transitions, 644 flow [2024-11-17 07:33:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:10,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-11-17 07:33:10,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5733695652173914 [2024-11-17 07:33:10,982 INFO L175 Difference]: Start difference. First operand has 111 places, 92 transitions, 370 flow. Second operand 4 states and 211 transitions. [2024-11-17 07:33:10,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 118 transitions, 644 flow [2024-11-17 07:33:11,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 118 transitions, 626 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-17 07:33:11,003 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 354 flow [2024-11-17 07:33:11,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=354, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-11-17 07:33:11,004 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 23 predicate places. [2024-11-17 07:33:11,004 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 354 flow [2024-11-17 07:33:11,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:11,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:11,005 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, 1, 1] [2024-11-17 07:33:11,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:33:11,205 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,SelfDestructingSolverStorable13 [2024-11-17 07:33:11,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:11,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash 47726305, now seen corresponding path program 1 times [2024-11-17 07:33:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951888879] [2024-11-17 07:33:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:11,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:33:11,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951888879] [2024-11-17 07:33:11,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951888879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:11,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:11,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572871276] [2024-11-17 07:33:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:11,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:33:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:11,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:33:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:33:11,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-17 07:33:11,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:11,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:11,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-17 07:33:11,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:11,926 INFO L124 PetriNetUnfolderBase]: 2787/5898 cut-off events. [2024-11-17 07:33:11,927 INFO L125 PetriNetUnfolderBase]: For 4426/4446 co-relation queries the response was YES. [2024-11-17 07:33:11,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 5898 events. 2787/5898 cut-off events. For 4426/4446 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 41693 event pairs, 751 based on Foata normal form. 150/5882 useless extension candidates. Maximal degree in co-relation 14970. Up to 2901 conditions per place. [2024-11-17 07:33:11,960 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 88 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2024-11-17 07:33:11,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 660 flow [2024-11-17 07:33:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:33:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:33:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-17 07:33:11,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-11-17 07:33:11,962 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 354 flow. Second operand 4 states and 216 transitions. [2024-11-17 07:33:11,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 660 flow [2024-11-17 07:33:11,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:33:11,975 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 356 flow [2024-11-17 07:33:11,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-11-17 07:33:11,976 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 22 predicate places. [2024-11-17 07:33:11,976 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 356 flow [2024-11-17 07:33:11,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:11,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:11,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:11,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:33:11,977 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:11,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1241723431, now seen corresponding path program 1 times [2024-11-17 07:33:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763289291] [2024-11-17 07:33:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763289291] [2024-11-17 07:33:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763289291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:12,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:12,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:12,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835836429] [2024-11-17 07:33:12,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:12,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:33:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:12,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:33:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:33:12,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 92 [2024-11-17 07:33:12,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:12,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:12,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 92 [2024-11-17 07:33:12,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:12,439 INFO L124 PetriNetUnfolderBase]: 1603/3865 cut-off events. [2024-11-17 07:33:12,440 INFO L125 PetriNetUnfolderBase]: For 3841/3841 co-relation queries the response was YES. [2024-11-17 07:33:12,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 3865 events. 1603/3865 cut-off events. For 3841/3841 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 26593 event pairs, 446 based on Foata normal form. 162/3944 useless extension candidates. Maximal degree in co-relation 10041. Up to 1855 conditions per place. [2024-11-17 07:33:12,469 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 62 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-17 07:33:12,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 532 flow [2024-11-17 07:33:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:33:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:33:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-17 07:33:12,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-11-17 07:33:12,471 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 356 flow. Second operand 3 states and 179 transitions. [2024-11-17 07:33:12,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 532 flow [2024-11-17 07:33:12,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 506 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-17 07:33:12,482 INFO L231 Difference]: Finished difference. Result has 103 places, 84 transitions, 311 flow [2024-11-17 07:33:12,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=103, PETRI_TRANSITIONS=84} [2024-11-17 07:33:12,483 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2024-11-17 07:33:12,483 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 84 transitions, 311 flow [2024-11-17 07:33:12,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:12,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:12,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:12,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:33:12,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:12,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1358619427, now seen corresponding path program 1 times [2024-11-17 07:33:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42468106] [2024-11-17 07:33:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:13,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42468106] [2024-11-17 07:33:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42468106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:13,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:13,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 07:33:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229463720] [2024-11-17 07:33:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:13,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:33:13,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:33:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:33:13,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:33:13,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 84 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 40.25) internal successors, (322), 8 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:13,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:13,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:33:13,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:13,578 INFO L124 PetriNetUnfolderBase]: 1637/3824 cut-off events. [2024-11-17 07:33:13,578 INFO L125 PetriNetUnfolderBase]: For 3304/3306 co-relation queries the response was YES. [2024-11-17 07:33:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9951 conditions, 3824 events. 1637/3824 cut-off events. For 3304/3306 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 25533 event pairs, 266 based on Foata normal form. 36/3778 useless extension candidates. Maximal degree in co-relation 9931. Up to 1631 conditions per place. [2024-11-17 07:33:13,592 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 108 selfloop transitions, 9 changer transitions 1/148 dead transitions. [2024-11-17 07:33:13,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 148 transitions, 820 flow [2024-11-17 07:33:13,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 07:33:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-17 07:33:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 395 transitions. [2024-11-17 07:33:13,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5366847826086957 [2024-11-17 07:33:13,595 INFO L175 Difference]: Start difference. First operand has 103 places, 84 transitions, 311 flow. Second operand 8 states and 395 transitions. [2024-11-17 07:33:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 148 transitions, 820 flow [2024-11-17 07:33:13,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 148 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:33:13,604 INFO L231 Difference]: Finished difference. Result has 109 places, 83 transitions, 319 flow [2024-11-17 07:33:13,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=319, PETRI_PLACES=109, PETRI_TRANSITIONS=83} [2024-11-17 07:33:13,605 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 27 predicate places. [2024-11-17 07:33:13,605 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 83 transitions, 319 flow [2024-11-17 07:33:13,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.25) internal successors, (322), 8 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:13,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:13,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:13,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 07:33:13,606 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:13,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1570618184, now seen corresponding path program 1 times [2024-11-17 07:33:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:13,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340992978] [2024-11-17 07:33:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:13,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:14,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:14,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340992978] [2024-11-17 07:33:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340992978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:14,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 07:33:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819652926] [2024-11-17 07:33:14,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:14,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:33:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:33:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:33:14,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 92 [2024-11-17 07:33:14,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 83 transitions, 319 flow. Second operand has 10 states, 10 states have (on average 36.8) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:14,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:14,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 92 [2024-11-17 07:33:14,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:15,201 INFO L124 PetriNetUnfolderBase]: 1967/4496 cut-off events. [2024-11-17 07:33:15,201 INFO L125 PetriNetUnfolderBase]: For 4115/4115 co-relation queries the response was YES. [2024-11-17 07:33:15,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11691 conditions, 4496 events. 1967/4496 cut-off events. For 4115/4115 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 30375 event pairs, 193 based on Foata normal form. 0/4380 useless extension candidates. Maximal degree in co-relation 11670. Up to 1385 conditions per place. [2024-11-17 07:33:15,229 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 143 selfloop transitions, 12 changer transitions 1/183 dead transitions. [2024-11-17 07:33:15,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 183 transitions, 1044 flow [2024-11-17 07:33:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 07:33:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 07:33:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 505 transitions. [2024-11-17 07:33:15,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4990118577075099 [2024-11-17 07:33:15,231 INFO L175 Difference]: Start difference. First operand has 109 places, 83 transitions, 319 flow. Second operand 11 states and 505 transitions. [2024-11-17 07:33:15,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 183 transitions, 1044 flow [2024-11-17 07:33:15,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 183 transitions, 1028 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:33:15,242 INFO L231 Difference]: Finished difference. Result has 117 places, 88 transitions, 368 flow [2024-11-17 07:33:15,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=368, PETRI_PLACES=117, PETRI_TRANSITIONS=88} [2024-11-17 07:33:15,242 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 35 predicate places. [2024-11-17 07:33:15,243 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 88 transitions, 368 flow [2024-11-17 07:33:15,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.8) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:15,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:15,243 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:15,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 07:33:15,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:15,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1165786593, now seen corresponding path program 1 times [2024-11-17 07:33:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458412981] [2024-11-17 07:33:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458412981] [2024-11-17 07:33:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458412981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:15,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:33:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401289330] [2024-11-17 07:33:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:15,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:33:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:33:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:33:15,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 92 [2024-11-17 07:33:15,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 88 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:15,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:15,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 92 [2024-11-17 07:33:15,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:15,750 INFO L124 PetriNetUnfolderBase]: 1533/3822 cut-off events. [2024-11-17 07:33:15,750 INFO L125 PetriNetUnfolderBase]: For 4006/4010 co-relation queries the response was YES. [2024-11-17 07:33:15,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9776 conditions, 3822 events. 1533/3822 cut-off events. For 4006/4010 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 25479 event pairs, 934 based on Foata normal form. 30/3764 useless extension candidates. Maximal degree in co-relation 9752. Up to 1754 conditions per place. [2024-11-17 07:33:15,776 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 69 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-11-17 07:33:15,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 573 flow [2024-11-17 07:33:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:33:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:33:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-17 07:33:15,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485507246376812 [2024-11-17 07:33:15,778 INFO L175 Difference]: Start difference. First operand has 117 places, 88 transitions, 368 flow. Second operand 3 states and 179 transitions. [2024-11-17 07:33:15,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 104 transitions, 573 flow [2024-11-17 07:33:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 104 transitions, 560 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:33:15,791 INFO L231 Difference]: Finished difference. Result has 114 places, 86 transitions, 351 flow [2024-11-17 07:33:15,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=114, PETRI_TRANSITIONS=86} [2024-11-17 07:33:15,792 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 32 predicate places. [2024-11-17 07:33:15,792 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 86 transitions, 351 flow [2024-11-17 07:33:15,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:15,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:15,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:15,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 07:33:15,793 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:15,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2031133516, now seen corresponding path program 1 times [2024-11-17 07:33:15,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:15,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365762955] [2024-11-17 07:33:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:15,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:16,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365762955] [2024-11-17 07:33:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365762955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:16,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:16,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:33:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8879338] [2024-11-17 07:33:16,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:16,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:33:16,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:16,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:33:16,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:33:16,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 92 [2024-11-17 07:33:16,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 86 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:16,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:16,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 92 [2024-11-17 07:33:16,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:16,505 INFO L124 PetriNetUnfolderBase]: 1548/3745 cut-off events. [2024-11-17 07:33:16,506 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES. [2024-11-17 07:33:16,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9709 conditions, 3745 events. 1548/3745 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 24577 event pairs, 955 based on Foata normal form. 29/3675 useless extension candidates. Maximal degree in co-relation 9683. Up to 1909 conditions per place. [2024-11-17 07:33:16,531 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 57 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-11-17 07:33:16,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 100 transitions, 552 flow [2024-11-17 07:33:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:33:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:33:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2024-11-17 07:33:16,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5413043478260869 [2024-11-17 07:33:16,533 INFO L175 Difference]: Start difference. First operand has 114 places, 86 transitions, 351 flow. Second operand 5 states and 249 transitions. [2024-11-17 07:33:16,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 100 transitions, 552 flow [2024-11-17 07:33:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 100 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:33:16,545 INFO L231 Difference]: Finished difference. Result has 115 places, 85 transitions, 369 flow [2024-11-17 07:33:16,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2024-11-17 07:33:16,545 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2024-11-17 07:33:16,546 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 369 flow [2024-11-17 07:33:16,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 6 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:16,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:16,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:16,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 07:33:16,546 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:16,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 913381522, now seen corresponding path program 1 times [2024-11-17 07:33:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878377332] [2024-11-17 07:33:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878377332] [2024-11-17 07:33:17,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878377332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:17,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 07:33:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503175505] [2024-11-17 07:33:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:17,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:33:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:33:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:33:17,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-17 07:33:17,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 369 flow. Second operand has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:17,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:17,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-17 07:33:17,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:17,972 INFO L124 PetriNetUnfolderBase]: 1639/3803 cut-off events. [2024-11-17 07:33:17,972 INFO L125 PetriNetUnfolderBase]: For 4155/4157 co-relation queries the response was YES. [2024-11-17 07:33:17,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10115 conditions, 3803 events. 1639/3803 cut-off events. For 4155/4157 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 24120 event pairs, 237 based on Foata normal form. 22/3762 useless extension candidates. Maximal degree in co-relation 10089. Up to 847 conditions per place. [2024-11-17 07:33:17,991 INFO L140 encePairwiseOnDemand]: 76/92 looper letters, 140 selfloop transitions, 14 changer transitions 12/194 dead transitions. [2024-11-17 07:33:17,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 194 transitions, 1157 flow [2024-11-17 07:33:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:33:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:33:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 592 transitions. [2024-11-17 07:33:17,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49498327759197325 [2024-11-17 07:33:17,994 INFO L175 Difference]: Start difference. First operand has 115 places, 85 transitions, 369 flow. Second operand 13 states and 592 transitions. [2024-11-17 07:33:17,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 194 transitions, 1157 flow [2024-11-17 07:33:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 194 transitions, 1133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:33:18,009 INFO L231 Difference]: Finished difference. Result has 126 places, 89 transitions, 402 flow [2024-11-17 07:33:18,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=126, PETRI_TRANSITIONS=89} [2024-11-17 07:33:18,009 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2024-11-17 07:33:18,009 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 89 transitions, 402 flow [2024-11-17 07:33:18,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:18,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:18,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:18,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 07:33:18,010 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:18,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash -774572875, now seen corresponding path program 1 times [2024-11-17 07:33:18,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:18,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171366263] [2024-11-17 07:33:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171366263] [2024-11-17 07:33:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171366263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:33:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:33:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 07:33:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522295250] [2024-11-17 07:33:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:33:19,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:33:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:33:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:33:19,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2024-11-17 07:33:19,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 89 transitions, 402 flow. Second operand has 11 states, 11 states have (on average 40.18181818181818) internal successors, (442), 11 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:19,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:33:19,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2024-11-17 07:33:19,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:33:20,005 INFO L124 PetriNetUnfolderBase]: 1589/3757 cut-off events. [2024-11-17 07:33:20,006 INFO L125 PetriNetUnfolderBase]: For 4163/4165 co-relation queries the response was YES. [2024-11-17 07:33:20,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10171 conditions, 3757 events. 1589/3757 cut-off events. For 4163/4165 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23702 event pairs, 232 based on Foata normal form. 22/3746 useless extension candidates. Maximal degree in co-relation 10142. Up to 810 conditions per place. [2024-11-17 07:33:20,030 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 140 selfloop transitions, 15 changer transitions 12/197 dead transitions. [2024-11-17 07:33:20,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 197 transitions, 1194 flow [2024-11-17 07:33:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:33:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:33:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 617 transitions. [2024-11-17 07:33:20,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158862876254181 [2024-11-17 07:33:20,032 INFO L175 Difference]: Start difference. First operand has 126 places, 89 transitions, 402 flow. Second operand 13 states and 617 transitions. [2024-11-17 07:33:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 197 transitions, 1194 flow [2024-11-17 07:33:20,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 197 transitions, 1172 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-17 07:33:20,049 INFO L231 Difference]: Finished difference. Result has 130 places, 89 transitions, 417 flow [2024-11-17 07:33:20,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=417, PETRI_PLACES=130, PETRI_TRANSITIONS=89} [2024-11-17 07:33:20,049 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, 48 predicate places. [2024-11-17 07:33:20,050 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 89 transitions, 417 flow [2024-11-17 07:33:20,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 40.18181818181818) internal successors, (442), 11 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:33:20,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:33:20,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:33:20,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 07:33:20,051 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-17 07:33:20,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:33:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash -144803117, now seen corresponding path program 1 times [2024-11-17 07:33:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:33:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739476279] [2024-11-17 07:33:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:33:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:33:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739476279] [2024-11-17 07:33:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739476279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:33:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829224822] [2024-11-17 07:33:21,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:33:21,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:33:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:33:21,804 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) [2024-11-17 07:33:21,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:33:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:33:21,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-17 07:33:21,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:33:22,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2024-11-17 07:33:22,091 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:22,108 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-17 07:33:22,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-17 07:33:22,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-17 07:33:22,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 15 [2024-11-17 07:33:22,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:22,304 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-17 07:33:22,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-17 07:33:22,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-17 07:33:22,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:22,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 29 [2024-11-17 07:33:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 07:33:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 07:33:22,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 29 [2024-11-17 07:33:22,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:22,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-17 07:33:22,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-17 07:33:22,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 07:33:22,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2024-11-17 07:33:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:22,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:33:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:33:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829224822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:33:48,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:33:48,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 37 [2024-11-17 07:33:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664897] [2024-11-17 07:33:48,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:33:48,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-17 07:33:48,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:33:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-17 07:33:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1270, Unknown=5, NotChecked=0, Total=1482 [2024-11-17 07:33:50,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:33:51,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:33:55,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:34:00,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:34:02,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 07:34:02,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-11-17 07:34:02,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 89 transitions, 417 flow. Second operand has 39 states, 39 states have (on average 29.17948717948718) internal successors, (1138), 39 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:02,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:02,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-11-17 07:34:02,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:12,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]