./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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/stack-2.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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:47:36,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:47:36,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:47:36,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:47:36,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:47:37,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:47:37,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:47:37,003 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:47:37,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:47:37,004 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:47:37,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:47:37,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:47:37,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:47:37,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:47:37,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:47:37,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:47:37,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:47:37,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:47:37,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:47:37,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:47:37,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:47:37,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:47:37,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:47:37,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:47:37,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:47:37,014 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:47:37,014 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:47:37,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:47:37,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:47:37,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:47:37,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:47:37,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:47:37,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:47:37,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:47:37,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:37,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:47:37,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:47:37,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:47:37,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:47:37,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:47:37,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:47:37,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:47:37,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:47:37,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:47:37,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2024-11-19 13:47:37,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:47:37,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:47:37,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:47:37,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:47:37,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:47:37,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack-2.i [2024-11-19 13:47:38,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:47:38,896 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:47:38,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack-2.i [2024-11-19 13:47:38,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f8fab74/c96996552cb446679fecec7a14508759/FLAG15815a1bb [2024-11-19 13:47:38,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13f8fab74/c96996552cb446679fecec7a14508759 [2024-11-19 13:47:38,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:47:38,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:47:38,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:38,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:47:38,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:47:38,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:38" (1/1) ... [2024-11-19 13:47:38,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2f549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:38, skipping insertion in model container [2024-11-19 13:47:38,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:38" (1/1) ... [2024-11-19 13:47:38,986 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:47:39,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:39,539 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:47:39,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:47:39,705 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:47:39,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39 WrapperNode [2024-11-19 13:47:39,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:47:39,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:39,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:47:39,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:47:39,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,774 INFO L138 Inliner]: procedures = 277, calls = 37, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 169 [2024-11-19 13:47:39,778 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:47:39,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:47:39,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:47:39,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:47:39,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,818 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-11-19 13:47:39,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:47:39,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:47:39,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:47:39,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:47:39,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (1/1) ... [2024-11-19 13:47:39,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:47:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:39,884 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) [2024-11-19 13:47:39,888 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 [2024-11-19 13:47:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-19 13:47:39,925 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-19 13:47:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-19 13:47:39,926 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-19 13:47:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:47:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:47:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:47:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:47:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:47:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:47:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:47:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:47:39,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:47:39,930 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:47:40,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:47:40,066 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:47:40,339 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:47:40,339 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:47:40,536 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:47:40,537 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 13:47:40,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:40 BoogieIcfgContainer [2024-11-19 13:47:40,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:47:40,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:47:40,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:47:40,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:47:40,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:38" (1/3) ... [2024-11-19 13:47:40,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48410965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:40, skipping insertion in model container [2024-11-19 13:47:40,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:39" (2/3) ... [2024-11-19 13:47:40,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48410965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:40, skipping insertion in model container [2024-11-19 13:47:40,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:40" (3/3) ... [2024-11-19 13:47:40,548 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2024-11-19 13:47:40,563 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:47:40,565 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:47:40,565 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:47:40,634 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:47:40,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:47:40,693 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-19 13:47:40,693 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:47:40,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-19 13:47:40,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-19 13:47:40,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-19 13:47:40,710 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:47:40,717 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;@6acb2a19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:47:40,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-19 13:47:40,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:47:40,727 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2024-11-19 13:47:40,727 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:47:40,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:40,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:40,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:40,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1199761173, now seen corresponding path program 1 times [2024-11-19 13:47:40,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591624695] [2024-11-19 13:47:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:41,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591624695] [2024-11-19 13:47:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591624695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:41,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426442290] [2024-11-19 13:47:41,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:41,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:41,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:41,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:41,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:41,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:41,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:41,578 INFO L124 PetriNetUnfolderBase]: 713/1403 cut-off events. [2024-11-19 13:47:41,578 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-19 13:47:41,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1403 events. 713/1403 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7652 event pairs, 148 based on Foata normal form. 40/1281 useless extension candidates. Maximal degree in co-relation 2472. Up to 781 conditions per place. [2024-11-19 13:47:41,598 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-19 13:47:41,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-11-19 13:47:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-19 13:47:41,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-19 13:47:41,615 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-11-19 13:47:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-11-19 13:47:41,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:41,624 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-11-19 13:47:41,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-19 13:47:41,635 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-19 13:47:41,635 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-11-19 13:47:41,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:41,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:41,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:41,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:47:41,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:41,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2024230831, now seen corresponding path program 1 times [2024-11-19 13:47:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062167542] [2024-11-19 13:47:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:41,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062167542] [2024-11-19 13:47:41,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062167542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:41,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:41,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:47:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048808935] [2024-11-19 13:47:41,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:41,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:41,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:41,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:41,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:41,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:41,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:41,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:42,087 INFO L124 PetriNetUnfolderBase]: 751/1505 cut-off events. [2024-11-19 13:47:42,087 INFO L125 PetriNetUnfolderBase]: For 343/347 co-relation queries the response was YES. [2024-11-19 13:47:42,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 1505 events. 751/1505 cut-off events. For 343/347 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8354 event pairs, 200 based on Foata normal form. 64/1439 useless extension candidates. Maximal degree in co-relation 2806. Up to 839 conditions per place. [2024-11-19 13:47:42,101 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 67 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-19 13:47:42,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 388 flow [2024-11-19 13:47:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:47:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:47:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-19 13:47:42,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 13:47:42,106 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 156 transitions. [2024-11-19 13:47:42,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 388 flow [2024-11-19 13:47:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:47:42,112 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 188 flow [2024-11-19 13:47:42,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-19 13:47:42,113 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-19 13:47:42,114 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 188 flow [2024-11-19 13:47:42,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:42,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:42,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:47:42,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:42,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1673384973, now seen corresponding path program 1 times [2024-11-19 13:47:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941154558] [2024-11-19 13:47:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:42,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941154558] [2024-11-19 13:47:42,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941154558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:42,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:42,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:42,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728427751] [2024-11-19 13:47:42,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:42,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:42,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:42,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:42,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:42,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:42,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:42,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:42,540 INFO L124 PetriNetUnfolderBase]: 1260/2473 cut-off events. [2024-11-19 13:47:42,540 INFO L125 PetriNetUnfolderBase]: For 1182/1190 co-relation queries the response was YES. [2024-11-19 13:47:42,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5723 conditions, 2473 events. 1260/2473 cut-off events. For 1182/1190 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14952 event pairs, 538 based on Foata normal form. 68/2405 useless extension candidates. Maximal degree in co-relation 5221. Up to 1246 conditions per place. [2024-11-19 13:47:42,559 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 81 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-19 13:47:42,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 527 flow [2024-11-19 13:47:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-19 13:47:42,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-19 13:47:42,562 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 188 flow. Second operand 4 states and 132 transitions. [2024-11-19 13:47:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 527 flow [2024-11-19 13:47:42,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:42,574 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 207 flow [2024-11-19 13:47:42,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-19 13:47:42,576 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-11-19 13:47:42,576 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 207 flow [2024-11-19 13:47:42,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:42,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:42,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:47:42,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:42,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1997963078, now seen corresponding path program 1 times [2024-11-19 13:47:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61520251] [2024-11-19 13:47:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61520251] [2024-11-19 13:47:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61520251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:42,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:42,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199246524] [2024-11-19 13:47:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:42,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:42,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:42,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:42,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:42,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:42,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:42,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:42,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:42,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:43,163 INFO L124 PetriNetUnfolderBase]: 1711/3261 cut-off events. [2024-11-19 13:47:43,166 INFO L125 PetriNetUnfolderBase]: For 2361/2533 co-relation queries the response was YES. [2024-11-19 13:47:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3261 events. 1711/3261 cut-off events. For 2361/2533 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20083 event pairs, 635 based on Foata normal form. 106/3248 useless extension candidates. Maximal degree in co-relation 7134. Up to 1454 conditions per place. [2024-11-19 13:47:43,193 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 82 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-19 13:47:43,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 546 flow [2024-11-19 13:47:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:43,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-19 13:47:43,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-19 13:47:43,198 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 207 flow. Second operand 4 states and 134 transitions. [2024-11-19 13:47:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 546 flow [2024-11-19 13:47:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:43,210 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 229 flow [2024-11-19 13:47:43,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-19 13:47:43,212 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2024-11-19 13:47:43,213 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 229 flow [2024-11-19 13:47:43,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:43,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:43,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:47:43,214 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:43,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:43,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1792936414, now seen corresponding path program 1 times [2024-11-19 13:47:43,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:43,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399277376] [2024-11-19 13:47:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:43,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399277376] [2024-11-19 13:47:43,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399277376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:43,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:43,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534463193] [2024-11-19 13:47:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:43,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:47:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:47:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:47:43,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-19 13:47:43,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:43,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-19 13:47:43,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:43,561 INFO L124 PetriNetUnfolderBase]: 823/1822 cut-off events. [2024-11-19 13:47:43,562 INFO L125 PetriNetUnfolderBase]: For 1160/1236 co-relation queries the response was YES. [2024-11-19 13:47:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 1822 events. 823/1822 cut-off events. For 1160/1236 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10594 event pairs, 210 based on Foata normal form. 92/1880 useless extension candidates. Maximal degree in co-relation 4328. Up to 954 conditions per place. [2024-11-19 13:47:43,576 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-19 13:47:43,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 368 flow [2024-11-19 13:47:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:47:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:47:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-19 13:47:43,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 13:47:43,578 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 229 flow. Second operand 3 states and 96 transitions. [2024-11-19 13:47:43,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 368 flow [2024-11-19 13:47:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 352 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:43,588 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 193 flow [2024-11-19 13:47:43,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-11-19 13:47:43,589 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-11-19 13:47:43,590 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 193 flow [2024-11-19 13:47:43,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:43,590 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:43,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:47:43,590 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:43,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1824702382, now seen corresponding path program 1 times [2024-11-19 13:47:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:43,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4698131] [2024-11-19 13:47:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4698131] [2024-11-19 13:47:43,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4698131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384386704] [2024-11-19 13:47:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:43,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:43,753 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) [2024-11-19 13:47:43,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:47:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:43,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:43,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:43,945 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:43,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384386704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:43,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:43,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:47:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320967512] [2024-11-19 13:47:43,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:43,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:43,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:43,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:43,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:43,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:43,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:44,428 INFO L124 PetriNetUnfolderBase]: 1303/2767 cut-off events. [2024-11-19 13:47:44,429 INFO L125 PetriNetUnfolderBase]: For 1374/1484 co-relation queries the response was YES. [2024-11-19 13:47:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6861 conditions, 2767 events. 1303/2767 cut-off events. For 1374/1484 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16945 event pairs, 274 based on Foata normal form. 18/2728 useless extension candidates. Maximal degree in co-relation 5597. Up to 906 conditions per place. [2024-11-19 13:47:44,448 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 97 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-19 13:47:44,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 654 flow [2024-11-19 13:47:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-19 13:47:44,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-19 13:47:44,451 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 193 flow. Second operand 7 states and 203 transitions. [2024-11-19 13:47:44,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 654 flow [2024-11-19 13:47:44,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:44,457 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 251 flow [2024-11-19 13:47:44,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-11-19 13:47:44,459 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-19 13:47:44,460 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 251 flow [2024-11-19 13:47:44,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:44,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:44,460 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] [2024-11-19 13:47:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:44,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 13:47:44,665 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:44,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1668962849, now seen corresponding path program 1 times [2024-11-19 13:47:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529530935] [2024-11-19 13:47:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529530935] [2024-11-19 13:47:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529530935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16650482] [2024-11-19 13:47:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:44,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:44,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:44,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:44,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:44,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:44,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:45,342 INFO L124 PetriNetUnfolderBase]: 1825/3773 cut-off events. [2024-11-19 13:47:45,342 INFO L125 PetriNetUnfolderBase]: For 2951/3123 co-relation queries the response was YES. [2024-11-19 13:47:45,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9795 conditions, 3773 events. 1825/3773 cut-off events. For 2951/3123 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 24291 event pairs, 352 based on Foata normal form. 26/3776 useless extension candidates. Maximal degree in co-relation 7958. Up to 1716 conditions per place. [2024-11-19 13:47:45,372 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 107 selfloop transitions, 10 changer transitions 0/129 dead transitions. [2024-11-19 13:47:45,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 757 flow [2024-11-19 13:47:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-11-19 13:47:45,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-19 13:47:45,374 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 251 flow. Second operand 7 states and 195 transitions. [2024-11-19 13:47:45,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 757 flow [2024-11-19 13:47:45,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 748 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:45,383 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 318 flow [2024-11-19 13:47:45,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-19 13:47:45,384 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-19 13:47:45,384 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 318 flow [2024-11-19 13:47:45,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:45,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:45,385 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] [2024-11-19 13:47:45,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:47:45,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:45,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1423245554, now seen corresponding path program 1 times [2024-11-19 13:47:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823245988] [2024-11-19 13:47:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823245988] [2024-11-19 13:47:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823245988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:45,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680728110] [2024-11-19 13:47:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:45,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:45,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:45,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:45,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:45,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:45,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:45,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:46,173 INFO L124 PetriNetUnfolderBase]: 2302/4733 cut-off events. [2024-11-19 13:47:46,173 INFO L125 PetriNetUnfolderBase]: For 4949/5183 co-relation queries the response was YES. [2024-11-19 13:47:46,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 4733 events. 2302/4733 cut-off events. For 4949/5183 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 32122 event pairs, 537 based on Foata normal form. 24/4724 useless extension candidates. Maximal degree in co-relation 9577. Up to 2363 conditions per place. [2024-11-19 13:47:46,224 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 108 selfloop transitions, 15 changer transitions 0/135 dead transitions. [2024-11-19 13:47:46,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 135 transitions, 848 flow [2024-11-19 13:47:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:47:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:47:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-11-19 13:47:46,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-11-19 13:47:46,229 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 318 flow. Second operand 8 states and 210 transitions. [2024-11-19 13:47:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 135 transitions, 848 flow [2024-11-19 13:47:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 839 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:46,246 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 410 flow [2024-11-19 13:47:46,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-11-19 13:47:46,247 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-11-19 13:47:46,247 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 410 flow [2024-11-19 13:47:46,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:46,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:46,248 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:46,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:47:46,248 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:46,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash 827402889, now seen corresponding path program 1 times [2024-11-19 13:47:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:46,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799892973] [2024-11-19 13:47:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799892973] [2024-11-19 13:47:46,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799892973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738971646] [2024-11-19 13:47:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:46,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:46,352 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) [2024-11-19 13:47:46,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:47:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:46,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:46,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:46,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738971646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:46,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:46,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587066333] [2024-11-19 13:47:46,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:46,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:46,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:46,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 410 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:46,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:46,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:46,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:47,146 INFO L124 PetriNetUnfolderBase]: 2583/5004 cut-off events. [2024-11-19 13:47:47,146 INFO L125 PetriNetUnfolderBase]: For 8300/8538 co-relation queries the response was YES. [2024-11-19 13:47:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 5004 events. 2583/5004 cut-off events. For 8300/8538 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 32643 event pairs, 315 based on Foata normal form. 130/4995 useless extension candidates. Maximal degree in co-relation 11097. Up to 2463 conditions per place. [2024-11-19 13:47:47,178 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 89 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-19 13:47:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 110 transitions, 898 flow [2024-11-19 13:47:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-19 13:47:47,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-19 13:47:47,180 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 410 flow. Second operand 4 states and 117 transitions. [2024-11-19 13:47:47,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 110 transitions, 898 flow [2024-11-19 13:47:47,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 864 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:47,194 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 396 flow [2024-11-19 13:47:47,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-11-19 13:47:47,196 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-19 13:47:47,196 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 396 flow [2024-11-19 13:47:47,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:47,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:47,197 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:47,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:47:47,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 13:47:47,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:47,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash 731199484, now seen corresponding path program 1 times [2024-11-19 13:47:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:47,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788454418] [2024-11-19 13:47:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:47,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788454418] [2024-11-19 13:47:47,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788454418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:47,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273418733] [2024-11-19 13:47:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:47,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:47,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:47,517 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) [2024-11-19 13:47:47,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:47:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:47,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:47,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:47,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:47,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273418733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:47,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:47,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:47:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67254820] [2024-11-19 13:47:47,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:47,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:47,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:47,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:47,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:47,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:47:47,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:47,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:47,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:47:47,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:48,620 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-11-19 13:47:48,621 INFO L125 PetriNetUnfolderBase]: For 12254/12484 co-relation queries the response was YES. [2024-11-19 13:47:48,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 6608 events. 3141/6608 cut-off events. For 12254/12484 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 46746 event pairs, 788 based on Foata normal form. 90/6667 useless extension candidates. Maximal degree in co-relation 15679. Up to 2350 conditions per place. [2024-11-19 13:47:48,668 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 173 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-11-19 13:47:48,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 207 transitions, 1464 flow [2024-11-19 13:47:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 13:47:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 13:47:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-11-19 13:47:48,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.634469696969697 [2024-11-19 13:47:48,670 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 396 flow. Second operand 11 states and 335 transitions. [2024-11-19 13:47:48,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 207 transitions, 1464 flow [2024-11-19 13:47:48,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:48,695 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 588 flow [2024-11-19 13:47:48,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=588, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-11-19 13:47:48,696 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-11-19 13:47:48,696 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 588 flow [2024-11-19 13:47:48,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:48,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:48,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:48,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 13:47:48,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:48,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:48,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash -918937295, now seen corresponding path program 1 times [2024-11-19 13:47:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:48,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088337236] [2024-11-19 13:47:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088337236] [2024-11-19 13:47:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088337236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260911729] [2024-11-19 13:47:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:48,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:48,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:48,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:48,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:48,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:48,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:49,834 INFO L124 PetriNetUnfolderBase]: 3469/6938 cut-off events. [2024-11-19 13:47:49,834 INFO L125 PetriNetUnfolderBase]: For 13995/14382 co-relation queries the response was YES. [2024-11-19 13:47:49,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20151 conditions, 6938 events. 3469/6938 cut-off events. For 13995/14382 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 45939 event pairs, 728 based on Foata normal form. 67/6976 useless extension candidates. Maximal degree in co-relation 17118. Up to 3973 conditions per place. [2024-11-19 13:47:49,892 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 127 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-11-19 13:47:49,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1179 flow [2024-11-19 13:47:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:47:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:47:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-11-19 13:47:49,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-11-19 13:47:49,895 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 588 flow. Second operand 8 states and 212 transitions. [2024-11-19 13:47:49,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1179 flow [2024-11-19 13:47:49,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 1162 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:49,933 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 689 flow [2024-11-19 13:47:49,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-11-19 13:47:49,934 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2024-11-19 13:47:49,934 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 689 flow [2024-11-19 13:47:49,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:49,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:49,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:49,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:47:49,935 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:49,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1318682222, now seen corresponding path program 1 times [2024-11-19 13:47:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762228981] [2024-11-19 13:47:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:50,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:50,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762228981] [2024-11-19 13:47:50,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762228981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:50,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:50,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:47:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747802630] [2024-11-19 13:47:50,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:50,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:47:50,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:50,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 689 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:50,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:50,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:50,796 INFO L124 PetriNetUnfolderBase]: 3508/7155 cut-off events. [2024-11-19 13:47:50,796 INFO L125 PetriNetUnfolderBase]: For 14991/15277 co-relation queries the response was YES. [2024-11-19 13:47:50,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21149 conditions, 7155 events. 3508/7155 cut-off events. For 14991/15277 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 49191 event pairs, 948 based on Foata normal form. 12/7136 useless extension candidates. Maximal degree in co-relation 17965. Up to 5369 conditions per place. [2024-11-19 13:47:50,844 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 8 changer transitions 0/132 dead transitions. [2024-11-19 13:47:50,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 132 transitions, 1113 flow [2024-11-19 13:47:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:47:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:47:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-19 13:47:50,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-19 13:47:50,846 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 689 flow. Second operand 7 states and 177 transitions. [2024-11-19 13:47:50,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 132 transitions, 1113 flow [2024-11-19 13:47:50,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 132 transitions, 1096 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:50,883 INFO L231 Difference]: Finished difference. Result has 107 places, 85 transitions, 709 flow [2024-11-19 13:47:50,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=709, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2024-11-19 13:47:50,884 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2024-11-19 13:47:50,884 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 709 flow [2024-11-19 13:47:50,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:50,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:50,885 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:50,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 13:47:50,885 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:50,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -120313701, now seen corresponding path program 1 times [2024-11-19 13:47:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573385615] [2024-11-19 13:47:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573385615] [2024-11-19 13:47:50,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573385615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:50,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287634076] [2024-11-19 13:47:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:50,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:50,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:50,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:50,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:50,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 709 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:50,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:50,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:50,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:51,714 INFO L124 PetriNetUnfolderBase]: 3533/7263 cut-off events. [2024-11-19 13:47:51,714 INFO L125 PetriNetUnfolderBase]: For 16092/16340 co-relation queries the response was YES. [2024-11-19 13:47:51,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21252 conditions, 7263 events. 3533/7263 cut-off events. For 16092/16340 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 50259 event pairs, 590 based on Foata normal form. 0/7262 useless extension candidates. Maximal degree in co-relation 18131. Up to 3403 conditions per place. [2024-11-19 13:47:51,751 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 134 selfloop transitions, 6 changer transitions 0/157 dead transitions. [2024-11-19 13:47:51,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1695 flow [2024-11-19 13:47:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-19 13:47:51,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-19 13:47:51,753 INFO L175 Difference]: Start difference. First operand has 107 places, 85 transitions, 709 flow. Second operand 4 states and 117 transitions. [2024-11-19 13:47:51,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1695 flow [2024-11-19 13:47:51,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 157 transitions, 1668 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:51,794 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 712 flow [2024-11-19 13:47:51,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=712, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-11-19 13:47:51,795 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-11-19 13:47:51,795 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 712 flow [2024-11-19 13:47:51,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:51,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:51,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:51,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 13:47:51,796 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:51,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2114020504, now seen corresponding path program 1 times [2024-11-19 13:47:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:51,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80775536] [2024-11-19 13:47:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80775536] [2024-11-19 13:47:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80775536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870799163] [2024-11-19 13:47:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:51,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:51,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:47:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:51,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:47:51,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:52,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:47:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870799163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:47:52,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:47:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:47:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597150771] [2024-11-19 13:47:52,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:47:52,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:47:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:47:52,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:47:52,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:52,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 712 flow. Second operand has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:52,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:52,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:52,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:53,619 INFO L124 PetriNetUnfolderBase]: 4337/8694 cut-off events. [2024-11-19 13:47:53,619 INFO L125 PetriNetUnfolderBase]: For 19505/19861 co-relation queries the response was YES. [2024-11-19 13:47:53,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27014 conditions, 8694 events. 4337/8694 cut-off events. For 19505/19861 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 58840 event pairs, 927 based on Foata normal form. 39/8708 useless extension candidates. Maximal degree in co-relation 23704. Up to 4364 conditions per place. [2024-11-19 13:47:53,710 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 201 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-11-19 13:47:53,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 260 transitions, 1989 flow [2024-11-19 13:47:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 13:47:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-19 13:47:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 456 transitions. [2024-11-19 13:47:53,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-19 13:47:53,713 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 712 flow. Second operand 17 states and 456 transitions. [2024-11-19 13:47:53,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 260 transitions, 1989 flow [2024-11-19 13:47:53,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 1955 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:53,775 INFO L231 Difference]: Finished difference. Result has 126 places, 108 transitions, 1072 flow [2024-11-19 13:47:53,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1072, PETRI_PLACES=126, PETRI_TRANSITIONS=108} [2024-11-19 13:47:53,776 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 80 predicate places. [2024-11-19 13:47:53,776 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 108 transitions, 1072 flow [2024-11-19 13:47:53,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.833333333333332) internal successors, (226), 12 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:53,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:53,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:53,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 13:47:53,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:53,977 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:53,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1860575169, now seen corresponding path program 1 times [2024-11-19 13:47:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:53,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116683009] [2024-11-19 13:47:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:53,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116683009] [2024-11-19 13:47:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116683009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670748709] [2024-11-19 13:47:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:54,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:54,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:47:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:54,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 13:47:54,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:54,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:54,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670748709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:54,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 13:47:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518255066] [2024-11-19 13:47:54,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:54,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:47:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:47:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 13:47:54,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:54,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 108 transitions, 1072 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:54,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:54,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:55,141 INFO L124 PetriNetUnfolderBase]: 4901/9400 cut-off events. [2024-11-19 13:47:55,141 INFO L125 PetriNetUnfolderBase]: For 25241/25299 co-relation queries the response was YES. [2024-11-19 13:47:55,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29817 conditions, 9400 events. 4901/9400 cut-off events. For 25241/25299 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 62873 event pairs, 712 based on Foata normal form. 262/9400 useless extension candidates. Maximal degree in co-relation 28870. Up to 5331 conditions per place. [2024-11-19 13:47:55,202 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 138 selfloop transitions, 5 changer transitions 0/163 dead transitions. [2024-11-19 13:47:55,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1819 flow [2024-11-19 13:47:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:55,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-19 13:47:55,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-19 13:47:55,203 INFO L175 Difference]: Start difference. First operand has 126 places, 108 transitions, 1072 flow. Second operand 4 states and 119 transitions. [2024-11-19 13:47:55,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1819 flow [2024-11-19 13:47:55,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1699 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-11-19 13:47:55,273 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1007 flow [2024-11-19 13:47:55,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1007, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-19 13:47:55,275 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-19 13:47:55,275 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1007 flow [2024-11-19 13:47:55,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:55,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:55,276 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 13:47:55,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:47:55,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 13:47:55,477 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:55,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:55,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1843255887, now seen corresponding path program 1 times [2024-11-19 13:47:55,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:55,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832041765] [2024-11-19 13:47:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:47:55,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:55,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832041765] [2024-11-19 13:47:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832041765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:55,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:47:55,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:47:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197559351] [2024-11-19 13:47:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:55,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:47:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:47:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:47:55,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-19 13:47:55,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1007 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:55,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:55,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-19 13:47:55,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:56,322 INFO L124 PetriNetUnfolderBase]: 4541/9002 cut-off events. [2024-11-19 13:47:56,322 INFO L125 PetriNetUnfolderBase]: For 23413/23417 co-relation queries the response was YES. [2024-11-19 13:47:56,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 9002 events. 4541/9002 cut-off events. For 23413/23417 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 61055 event pairs, 901 based on Foata normal form. 262/9238 useless extension candidates. Maximal degree in co-relation 27049. Up to 4371 conditions per place. [2024-11-19 13:47:56,378 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 153 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2024-11-19 13:47:56,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1925 flow [2024-11-19 13:47:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:47:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:47:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-19 13:47:56,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-11-19 13:47:56,379 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1007 flow. Second operand 4 states and 119 transitions. [2024-11-19 13:47:56,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1925 flow [2024-11-19 13:47:56,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:47:56,430 INFO L231 Difference]: Finished difference. Result has 124 places, 107 transitions, 1013 flow [2024-11-19 13:47:56,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=124, PETRI_TRANSITIONS=107} [2024-11-19 13:47:56,431 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 78 predicate places. [2024-11-19 13:47:56,431 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 107 transitions, 1013 flow [2024-11-19 13:47:56,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:56,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:56,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:56,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 13:47:56,432 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:56,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash -595202993, now seen corresponding path program 1 times [2024-11-19 13:47:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361912024] [2024-11-19 13:47:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361912024] [2024-11-19 13:47:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361912024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157354635] [2024-11-19 13:47:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:56,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:56,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:56,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:56,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:47:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:56,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:47:56,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 13:47:56,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157354635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:56,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:56,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-19 13:47:56,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274792442] [2024-11-19 13:47:56,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:56,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:56,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:56,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:56,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 107 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:56,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:56,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:56,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:57,757 INFO L124 PetriNetUnfolderBase]: 4880/9555 cut-off events. [2024-11-19 13:47:57,757 INFO L125 PetriNetUnfolderBase]: For 27557/27557 co-relation queries the response was YES. [2024-11-19 13:47:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31358 conditions, 9555 events. 4880/9555 cut-off events. For 27557/27557 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 65324 event pairs, 1082 based on Foata normal form. 111/9639 useless extension candidates. Maximal degree in co-relation 29649. Up to 3106 conditions per place. [2024-11-19 13:47:57,819 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 44 changer transitions 0/213 dead transitions. [2024-11-19 13:47:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2011 flow [2024-11-19 13:47:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 13:47:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 13:47:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-19 13:47:57,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-11-19 13:47:57,821 INFO L175 Difference]: Start difference. First operand has 124 places, 107 transitions, 1013 flow. Second operand 10 states and 259 transitions. [2024-11-19 13:47:57,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2011 flow [2024-11-19 13:47:57,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 213 transitions, 1973 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 13:47:57,873 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1345 flow [2024-11-19 13:47:57,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1345, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-11-19 13:47:57,874 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 91 predicate places. [2024-11-19 13:47:57,874 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1345 flow [2024-11-19 13:47:57,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:57,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:47:57,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:47:57,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 13:47:58,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 13:47:58,076 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:47:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:47:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash -877457867, now seen corresponding path program 1 times [2024-11-19 13:47:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:47:58,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928971877] [2024-11-19 13:47:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:47:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:47:58,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:47:58,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928971877] [2024-11-19 13:47:58,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928971877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:47:58,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935885838] [2024-11-19 13:47:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:47:58,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:47:58,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:47:58,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:47:58,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:47:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:47:58,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:47:58,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:47:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 13:47:58,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:47:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935885838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:47:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:47:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-19 13:47:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715700555] [2024-11-19 13:47:58,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:47:58,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:47:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:47:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:47:58,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:47:58,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:47:58,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1345 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:47:58,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:47:58,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:47:58,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:47:59,797 INFO L124 PetriNetUnfolderBase]: 5758/11260 cut-off events. [2024-11-19 13:47:59,797 INFO L125 PetriNetUnfolderBase]: For 41588/41588 co-relation queries the response was YES. [2024-11-19 13:47:59,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37627 conditions, 11260 events. 5758/11260 cut-off events. For 41588/41588 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 78778 event pairs, 1606 based on Foata normal form. 161/11388 useless extension candidates. Maximal degree in co-relation 35467. Up to 5362 conditions per place. [2024-11-19 13:47:59,901 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 175 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-11-19 13:47:59,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2397 flow [2024-11-19 13:47:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 13:47:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 13:47:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-19 13:47:59,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-11-19 13:47:59,903 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1345 flow. Second operand 10 states and 259 transitions. [2024-11-19 13:47:59,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2397 flow [2024-11-19 13:47:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 227 transitions, 2357 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-19 13:47:59,999 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 1729 flow [2024-11-19 13:47:59,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1729, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2024-11-19 13:48:00,000 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 105 predicate places. [2024-11-19 13:48:00,000 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 1729 flow [2024-11-19 13:48:00,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:00,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:00,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:00,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 13:48:00,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:00,201 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:00,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1933328464, now seen corresponding path program 1 times [2024-11-19 13:48:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598562742] [2024-11-19 13:48:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:00,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598562742] [2024-11-19 13:48:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598562742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484911374] [2024-11-19 13:48:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:00,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:00,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:00,368 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:00,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:48:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:00,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:48:00,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:00,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484911374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:00,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-19 13:48:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135856615] [2024-11-19 13:48:00,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:00,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 13:48:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 13:48:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-19 13:48:00,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:00,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 1729 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:00,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:00,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:00,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:02,467 INFO L124 PetriNetUnfolderBase]: 7476/14253 cut-off events. [2024-11-19 13:48:02,467 INFO L125 PetriNetUnfolderBase]: For 51920/51920 co-relation queries the response was YES. [2024-11-19 13:48:02,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48226 conditions, 14253 events. 7476/14253 cut-off events. For 51920/51920 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 101441 event pairs, 1273 based on Foata normal form. 196/14412 useless extension candidates. Maximal degree in co-relation 46470. Up to 3458 conditions per place. [2024-11-19 13:48:02,572 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 266 selfloop transitions, 111 changer transitions 0/386 dead transitions. [2024-11-19 13:48:02,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 386 transitions, 3863 flow [2024-11-19 13:48:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 13:48:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 13:48:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 569 transitions. [2024-11-19 13:48:02,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4741666666666667 [2024-11-19 13:48:02,575 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 1729 flow. Second operand 25 states and 569 transitions. [2024-11-19 13:48:02,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 386 transitions, 3863 flow [2024-11-19 13:48:02,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 386 transitions, 3819 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-19 13:48:02,711 INFO L231 Difference]: Finished difference. Result has 182 places, 175 transitions, 2575 flow [2024-11-19 13:48:02,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2575, PETRI_PLACES=182, PETRI_TRANSITIONS=175} [2024-11-19 13:48:02,712 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 136 predicate places. [2024-11-19 13:48:02,712 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 175 transitions, 2575 flow [2024-11-19 13:48:02,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:02,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:02,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:02,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:02,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:02,916 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:02,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1838562156, now seen corresponding path program 1 times [2024-11-19 13:48:02,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546845724] [2024-11-19 13:48:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546845724] [2024-11-19 13:48:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546845724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327096536] [2024-11-19 13:48:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:03,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:03,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 13:48:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:03,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 13:48:03,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:03,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327096536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:03,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:03,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-19 13:48:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772177629] [2024-11-19 13:48:03,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:03,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 13:48:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 13:48:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-19 13:48:03,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:48:03,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 175 transitions, 2575 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:03,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:03,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:48:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:05,416 INFO L124 PetriNetUnfolderBase]: 8009/15717 cut-off events. [2024-11-19 13:48:05,416 INFO L125 PetriNetUnfolderBase]: For 77796/77796 co-relation queries the response was YES. [2024-11-19 13:48:05,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54219 conditions, 15717 events. 8009/15717 cut-off events. For 77796/77796 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 114204 event pairs, 1673 based on Foata normal form. 402/16078 useless extension candidates. Maximal degree in co-relation 52070. Up to 3911 conditions per place. [2024-11-19 13:48:05,562 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 212 selfloop transitions, 149 changer transitions 0/374 dead transitions. [2024-11-19 13:48:05,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 374 transitions, 4405 flow [2024-11-19 13:48:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 13:48:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 13:48:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 504 transitions. [2024-11-19 13:48:05,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 13:48:05,564 INFO L175 Difference]: Start difference. First operand has 182 places, 175 transitions, 2575 flow. Second operand 21 states and 504 transitions. [2024-11-19 13:48:05,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 374 transitions, 4405 flow [2024-11-19 13:48:05,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 374 transitions, 4008 flow, removed 112 selfloop flow, removed 12 redundant places. [2024-11-19 13:48:05,753 INFO L231 Difference]: Finished difference. Result has 181 places, 198 transitions, 2925 flow [2024-11-19 13:48:05,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2925, PETRI_PLACES=181, PETRI_TRANSITIONS=198} [2024-11-19 13:48:05,754 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 135 predicate places. [2024-11-19 13:48:05,754 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 198 transitions, 2925 flow [2024-11-19 13:48:05,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:05,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:05,754 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:05,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:05,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:05,959 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:05,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1640489334, now seen corresponding path program 2 times [2024-11-19 13:48:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:05,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124865473] [2024-11-19 13:48:05,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:05,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:05,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:06,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124865473] [2024-11-19 13:48:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124865473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:06,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037985363] [2024-11-19 13:48:06,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:06,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:06,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:06,211 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:06,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 13:48:06,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:06,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:06,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 13:48:06,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:06,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:48:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037985363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:06,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:06,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-19 13:48:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701828858] [2024-11-19 13:48:06,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:06,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 13:48:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:06,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 13:48:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-19 13:48:06,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:48:06,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 198 transitions, 2925 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:06,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:06,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:48:06,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:10,628 INFO L124 PetriNetUnfolderBase]: 12306/24094 cut-off events. [2024-11-19 13:48:10,628 INFO L125 PetriNetUnfolderBase]: For 100807/100807 co-relation queries the response was YES. [2024-11-19 13:48:10,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82954 conditions, 24094 events. 12306/24094 cut-off events. For 100807/100807 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 187295 event pairs, 2232 based on Foata normal form. 230/24258 useless extension candidates. Maximal degree in co-relation 79773. Up to 6149 conditions per place. [2024-11-19 13:48:10,821 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 365 selfloop transitions, 223 changer transitions 0/601 dead transitions. [2024-11-19 13:48:10,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 601 transitions, 7266 flow [2024-11-19 13:48:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-19 13:48:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-19 13:48:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 788 transitions. [2024-11-19 13:48:10,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49747474747474746 [2024-11-19 13:48:10,823 INFO L175 Difference]: Start difference. First operand has 181 places, 198 transitions, 2925 flow. Second operand 33 states and 788 transitions. [2024-11-19 13:48:10,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 601 transitions, 7266 flow [2024-11-19 13:48:11,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 601 transitions, 6670 flow, removed 278 selfloop flow, removed 7 redundant places. [2024-11-19 13:48:11,279 INFO L231 Difference]: Finished difference. Result has 216 places, 308 transitions, 5191 flow [2024-11-19 13:48:11,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5191, PETRI_PLACES=216, PETRI_TRANSITIONS=308} [2024-11-19 13:48:11,279 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 170 predicate places. [2024-11-19 13:48:11,280 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 308 transitions, 5191 flow [2024-11-19 13:48:11,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:11,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:11,280 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:11,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 13:48:11,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 13:48:11,482 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:11,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash 587399304, now seen corresponding path program 1 times [2024-11-19 13:48:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060924418] [2024-11-19 13:48:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:11,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060924418] [2024-11-19 13:48:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060924418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638850521] [2024-11-19 13:48:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:11,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:11,657 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:11,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 13:48:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:11,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 13:48:11,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:11,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:11,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638850521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:11,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:11,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-19 13:48:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171912706] [2024-11-19 13:48:11,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:11,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 13:48:11,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:11,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 13:48:11,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-19 13:48:12,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-19 13:48:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 308 transitions, 5191 flow. Second operand has 20 states, 20 states have (on average 16.05) internal successors, (321), 20 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-19 13:48:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:18,322 INFO L124 PetriNetUnfolderBase]: 17703/32828 cut-off events. [2024-11-19 13:48:18,322 INFO L125 PetriNetUnfolderBase]: For 131697/131697 co-relation queries the response was YES. [2024-11-19 13:48:18,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113569 conditions, 32828 events. 17703/32828 cut-off events. For 131697/131697 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 251312 event pairs, 3043 based on Foata normal form. 340/33090 useless extension candidates. Maximal degree in co-relation 109057. Up to 9791 conditions per place. [2024-11-19 13:48:18,873 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 289 selfloop transitions, 342 changer transitions 0/639 dead transitions. [2024-11-19 13:48:18,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 639 transitions, 8928 flow [2024-11-19 13:48:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 13:48:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-19 13:48:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 584 transitions. [2024-11-19 13:48:18,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-11-19 13:48:18,875 INFO L175 Difference]: Start difference. First operand has 216 places, 308 transitions, 5191 flow. Second operand 26 states and 584 transitions. [2024-11-19 13:48:18,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 639 transitions, 8928 flow [2024-11-19 13:48:19,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 639 transitions, 8660 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-11-19 13:48:19,427 INFO L231 Difference]: Finished difference. Result has 225 places, 400 transitions, 7279 flow [2024-11-19 13:48:19,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4725, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7279, PETRI_PLACES=225, PETRI_TRANSITIONS=400} [2024-11-19 13:48:19,427 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 179 predicate places. [2024-11-19 13:48:19,427 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 400 transitions, 7279 flow [2024-11-19 13:48:19,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.05) internal successors, (321), 20 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:19,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:19,428 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2024-11-19 13:48:19,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:19,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 13:48:19,629 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:19,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash -782058308, now seen corresponding path program 2 times [2024-11-19 13:48:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335840711] [2024-11-19 13:48:19,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:19,658 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:19,658 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:19,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335840711] [2024-11-19 13:48:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335840711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:19,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844550668] [2024-11-19 13:48:19,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:48:19,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:19,927 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:19,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 13:48:20,064 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:48:20,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:20,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 13:48:20,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:48:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844550668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:20,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:20,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-19 13:48:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852265648] [2024-11-19 13:48:20,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:20,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 13:48:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:20,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 13:48:20,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-19 13:48:20,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-19 13:48:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 400 transitions, 7279 flow. Second operand has 28 states, 28 states have (on average 19.607142857142858) internal successors, (549), 28 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:20,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:20,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-19 13:48:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:26,554 INFO L124 PetriNetUnfolderBase]: 16347/32200 cut-off events. [2024-11-19 13:48:26,554 INFO L125 PetriNetUnfolderBase]: For 161766/161766 co-relation queries the response was YES. [2024-11-19 13:48:26,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115085 conditions, 32200 events. 16347/32200 cut-off events. For 161766/161766 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 261426 event pairs, 6564 based on Foata normal form. 54/32147 useless extension candidates. Maximal degree in co-relation 111886. Up to 21771 conditions per place. [2024-11-19 13:48:26,872 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 475 selfloop transitions, 64 changer transitions 11/577 dead transitions. [2024-11-19 13:48:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 577 transitions, 9190 flow [2024-11-19 13:48:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 13:48:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 13:48:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 411 transitions. [2024-11-19 13:48:26,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2024-11-19 13:48:26,874 INFO L175 Difference]: Start difference. First operand has 225 places, 400 transitions, 7279 flow. Second operand 13 states and 411 transitions. [2024-11-19 13:48:26,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 577 transitions, 9190 flow [2024-11-19 13:48:27,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 577 transitions, 8847 flow, removed 135 selfloop flow, removed 12 redundant places. [2024-11-19 13:48:27,654 INFO L231 Difference]: Finished difference. Result has 227 places, 404 transitions, 7173 flow [2024-11-19 13:48:27,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7173, PETRI_PLACES=227, PETRI_TRANSITIONS=404} [2024-11-19 13:48:27,655 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 181 predicate places. [2024-11-19 13:48:27,655 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 404 transitions, 7173 flow [2024-11-19 13:48:27,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 19.607142857142858) internal successors, (549), 28 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:27,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:27,656 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:27,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 13:48:27,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 13:48:27,857 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:27,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1533196434, now seen corresponding path program 3 times [2024-11-19 13:48:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612817141] [2024-11-19 13:48:27,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:27,923 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:48:27,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 13:48:28,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612817141] [2024-11-19 13:48:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612817141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35441269] [2024-11-19 13:48:28,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:48:28,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:28,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:28,414 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:28,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 13:48:28,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 13:48:28,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:48:28,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 13:48:28,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:28,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35441269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:28,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2024-11-19 13:48:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878302357] [2024-11-19 13:48:28,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:28,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 13:48:28,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 13:48:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-19 13:48:28,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-11-19 13:48:28,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 404 transitions, 7173 flow. Second operand has 22 states, 22 states have (on average 18.09090909090909) internal successors, (398), 22 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:28,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:28,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-11-19 13:48:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:48:38,601 INFO L124 PetriNetUnfolderBase]: 24693/48122 cut-off events. [2024-11-19 13:48:38,601 INFO L125 PetriNetUnfolderBase]: For 240328/240328 co-relation queries the response was YES. [2024-11-19 13:48:38,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170147 conditions, 48122 events. 24693/48122 cut-off events. For 240328/240328 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 400710 event pairs, 3647 based on Foata normal form. 356/48331 useless extension candidates. Maximal degree in co-relation 166496. Up to 8412 conditions per place. [2024-11-19 13:48:39,459 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 468 selfloop transitions, 470 changer transitions 2/955 dead transitions. [2024-11-19 13:48:39,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 955 transitions, 14070 flow [2024-11-19 13:48:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 13:48:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 13:48:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 859 transitions. [2024-11-19 13:48:39,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5263480392156863 [2024-11-19 13:48:39,461 INFO L175 Difference]: Start difference. First operand has 227 places, 404 transitions, 7173 flow. Second operand 34 states and 859 transitions. [2024-11-19 13:48:39,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 955 transitions, 14070 flow [2024-11-19 13:48:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 955 transitions, 13506 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-11-19 13:48:40,660 INFO L231 Difference]: Finished difference. Result has 260 places, 606 transitions, 11855 flow [2024-11-19 13:48:40,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6767, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11855, PETRI_PLACES=260, PETRI_TRANSITIONS=606} [2024-11-19 13:48:40,661 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 214 predicate places. [2024-11-19 13:48:40,661 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 606 transitions, 11855 flow [2024-11-19 13:48:40,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.09090909090909) internal successors, (398), 22 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:40,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:48:40,662 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:48:40,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 13:48:40,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 13:48:40,862 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-19 13:48:40,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:48:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1430009007, now seen corresponding path program 1 times [2024-11-19 13:48:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:48:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895099601] [2024-11-19 13:48:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:48:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 13:48:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:48:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895099601] [2024-11-19 13:48:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895099601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:48:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572864374] [2024-11-19 13:48:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:48:41,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:48:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:48:41,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:48:41,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 13:48:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:48:41,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 13:48:41,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:48:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 13:48:41,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:48:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 13:48:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572864374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:48:41,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:48:41,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-11-19 13:48:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812467794] [2024-11-19 13:48:41,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:48:41,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 13:48:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:48:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 13:48:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-19 13:48:41,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 13:48:41,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 606 transitions, 11855 flow. Second operand has 18 states, 18 states have (on average 17.944444444444443) internal successors, (323), 18 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:48:41,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:48:41,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 13:48:41,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand