./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:30:29,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:30:29,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:30:30,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:30:30,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:30:30,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:30:30,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:30:30,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:30:30,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:30:30,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:30:30,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:30:30,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:30:30,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:30:30,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:30:30,032 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:30:30,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:30:30,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:30:30,037 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:30:30,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:30:30,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:30:30,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:30:30,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:30:30,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:30:30,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:30:30,039 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:30:30,039 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:30:30,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:30:30,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:30:30,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:30:30,040 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:30:30,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:30:30,040 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:30:30,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:30:30,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:30:30,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:30,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:30:30,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:30:30,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:30:30,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:30:30,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:30:30,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:30:30,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:30:30,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:30:30,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:30:30,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-10-13 16:30:30,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:30:30,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:30:30,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:30:30,343 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:30:30,343 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:30:30,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-10-13 16:30:31,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:30:32,016 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:30:32,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-10-13 16:30:32,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84765f57/6197a7304ee74805abe2d0c5805dc60a/FLAG69ce6c916 [2024-10-13 16:30:32,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d84765f57/6197a7304ee74805abe2d0c5805dc60a [2024-10-13 16:30:32,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:30:32,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:30:32,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:32,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:30:32,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:30:32,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a616f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32, skipping insertion in model container [2024-10-13 16:30:32,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,135 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:30:32,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:32,518 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:30:32,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:32,643 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:30:32,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32 WrapperNode [2024-10-13 16:30:32,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:32,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:32,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:30:32,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:30:32,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,720 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 212 [2024-10-13 16:30:32,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:32,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:30:32,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:30:32,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:30:32,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,767 INFO L175 MemorySlicer]: Split 34 memory accesses to 4 slices as follows [2, 5, 3, 24]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 13 writes are split as follows [0, 0, 2, 11]. [2024-10-13 16:30:32,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:30:32,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:30:32,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:30:32,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:30:32,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (1/1) ... [2024-10-13 16:30:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:32,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:30:32,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:30:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 16:30:32,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 16:30:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 16:30:32,901 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 16:30:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:30:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:30:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:30:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:30:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:30:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:30:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:30:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:30:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:30:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:30:32,906 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:30:33,080 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:30:33,082 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:30:33,426 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:30:33,426 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:30:33,639 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:30:33,640 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:30:33,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:33 BoogieIcfgContainer [2024-10-13 16:30:33,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:30:33,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:30:33,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:30:33,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:30:33,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:32" (1/3) ... [2024-10-13 16:30:33,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22de38e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:33, skipping insertion in model container [2024-10-13 16:30:33,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:32" (2/3) ... [2024-10-13 16:30:33,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22de38e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:33, skipping insertion in model container [2024-10-13 16:30:33,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:33" (3/3) ... [2024-10-13 16:30:33,652 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-10-13 16:30:33,668 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:30:33,669 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 16:30:33,669 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:30:33,740 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:30:33,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 136 flow [2024-10-13 16:30:33,839 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-10-13 16:30:33,839 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:30:33,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 7/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 173 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-10-13 16:30:33,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 136 flow [2024-10-13 16:30:33,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 123 flow [2024-10-13 16:30:33,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:30:33,875 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;@5c185b3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:30:33,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-13 16:30:33,887 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:30:33,887 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-10-13 16:30:33,887 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:30:33,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:33,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:33,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:33,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:33,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1248388963, now seen corresponding path program 1 times [2024-10-13 16:30:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:33,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843877584] [2024-10-13 16:30:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:34,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843877584] [2024-10-13 16:30:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843877584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509991077] [2024-10-13 16:30:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:34,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:34,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:34,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-13 16:30:34,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:34,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:34,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-13 16:30:34,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:35,113 INFO L124 PetriNetUnfolderBase]: 1017/2063 cut-off events. [2024-10-13 16:30:35,115 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 16:30:35,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 2063 events. 1017/2063 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13163 event pairs, 213 based on Foata normal form. 42/1739 useless extension candidates. Maximal degree in co-relation 3578. Up to 1122 conditions per place. [2024-10-13 16:30:35,139 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 81 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2024-10-13 16:30:35,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 408 flow [2024-10-13 16:30:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-10-13 16:30:35,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754098360655738 [2024-10-13 16:30:35,156 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 123 flow. Second operand 5 states and 206 transitions. [2024-10-13 16:30:35,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 408 flow [2024-10-13 16:30:35,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:35,168 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 164 flow [2024-10-13 16:30:35,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-10-13 16:30:35,174 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2024-10-13 16:30:35,177 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 164 flow [2024-10-13 16:30:35,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:35,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:35,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:30:35,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:35,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash -346042883, now seen corresponding path program 1 times [2024-10-13 16:30:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:35,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585584709] [2024-10-13 16:30:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:35,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585584709] [2024-10-13 16:30:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585584709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037194366] [2024-10-13 16:30:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:35,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:35,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-10-13 16:30:35,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:35,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-10-13 16:30:35,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:35,454 INFO L124 PetriNetUnfolderBase]: 473/1087 cut-off events. [2024-10-13 16:30:35,454 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-13 16:30:35,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 1087 events. 473/1087 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6361 event pairs, 266 based on Foata normal form. 27/998 useless extension candidates. Maximal degree in co-relation 2027. Up to 444 conditions per place. [2024-10-13 16:30:35,460 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 39 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2024-10-13 16:30:35,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 270 flow [2024-10-13 16:30:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-10-13 16:30:35,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-10-13 16:30:35,462 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 164 flow. Second operand 3 states and 120 transitions. [2024-10-13 16:30:35,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 270 flow [2024-10-13 16:30:35,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 264 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:35,466 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 153 flow [2024-10-13 16:30:35,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-10-13 16:30:35,467 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2024-10-13 16:30:35,468 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 153 flow [2024-10-13 16:30:35,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:35,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:35,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:30:35,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:35,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 634398350, now seen corresponding path program 1 times [2024-10-13 16:30:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:35,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461828558] [2024-10-13 16:30:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:35,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:35,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461828558] [2024-10-13 16:30:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461828558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:35,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:35,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38199213] [2024-10-13 16:30:35,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:35,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:35,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:35,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-13 16:30:35,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:35,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-13 16:30:35,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:35,964 INFO L124 PetriNetUnfolderBase]: 505/1127 cut-off events. [2024-10-13 16:30:35,964 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-10-13 16:30:35,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1127 events. 505/1127 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6479 event pairs, 179 based on Foata normal form. 12/1025 useless extension candidates. Maximal degree in co-relation 1888. Up to 476 conditions per place. [2024-10-13 16:30:35,971 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 71 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-10-13 16:30:35,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 403 flow [2024-10-13 16:30:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:30:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:30:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-10-13 16:30:35,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5956284153005464 [2024-10-13 16:30:35,975 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 153 flow. Second operand 6 states and 218 transitions. [2024-10-13 16:30:35,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 403 flow [2024-10-13 16:30:35,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 99 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:30:35,980 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 184 flow [2024-10-13 16:30:35,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-13 16:30:35,982 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-10-13 16:30:35,982 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 184 flow [2024-10-13 16:30:35,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:35,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:35,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:30:35,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:35,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:35,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1808486007, now seen corresponding path program 1 times [2024-10-13 16:30:35,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:35,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817507496] [2024-10-13 16:30:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:35,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:36,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817507496] [2024-10-13 16:30:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817507496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069941976] [2024-10-13 16:30:36,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:36,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:36,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-10-13 16:30:36,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:36,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-10-13 16:30:36,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:36,233 INFO L124 PetriNetUnfolderBase]: 440/980 cut-off events. [2024-10-13 16:30:36,234 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-10-13 16:30:36,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 980 events. 440/980 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5203 event pairs, 293 based on Foata normal form. 24/933 useless extension candidates. Maximal degree in co-relation 1845. Up to 591 conditions per place. [2024-10-13 16:30:36,239 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 53 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-10-13 16:30:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 325 flow [2024-10-13 16:30:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:36,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-13 16:30:36,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6188524590163934 [2024-10-13 16:30:36,241 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 184 flow. Second operand 4 states and 151 transitions. [2024-10-13 16:30:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 325 flow [2024-10-13 16:30:36,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:36,245 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 192 flow [2024-10-13 16:30:36,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-10-13 16:30:36,245 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-10-13 16:30:36,246 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 192 flow [2024-10-13 16:30:36,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:36,246 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:36,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:30:36,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:36,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -536245484, now seen corresponding path program 1 times [2024-10-13 16:30:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:36,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920935699] [2024-10-13 16:30:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:36,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:36,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920935699] [2024-10-13 16:30:36,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920935699] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:36,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:36,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:30:36,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158892755] [2024-10-13 16:30:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:36,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:36,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:36,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-10-13 16:30:36,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:36,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-10-13 16:30:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:36,855 INFO L124 PetriNetUnfolderBase]: 398/938 cut-off events. [2024-10-13 16:30:36,855 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-13 16:30:36,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 938 events. 398/938 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5009 event pairs, 118 based on Foata normal form. 12/895 useless extension candidates. Maximal degree in co-relation 1677. Up to 457 conditions per place. [2024-10-13 16:30:36,862 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 55 selfloop transitions, 5 changer transitions 3/86 dead transitions. [2024-10-13 16:30:36,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 369 flow [2024-10-13 16:30:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-10-13 16:30:36,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131147540983607 [2024-10-13 16:30:36,864 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 192 flow. Second operand 5 states and 187 transitions. [2024-10-13 16:30:36,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 369 flow [2024-10-13 16:30:36,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:36,869 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 196 flow [2024-10-13 16:30:36,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-10-13 16:30:36,870 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-10-13 16:30:36,873 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 196 flow [2024-10-13 16:30:36,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:36,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:36,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:30:36,874 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:36,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:36,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1666498322, now seen corresponding path program 1 times [2024-10-13 16:30:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:36,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379115795] [2024-10-13 16:30:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:37,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379115795] [2024-10-13 16:30:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379115795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555181045] [2024-10-13 16:30:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:37,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:37,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:30:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:37,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-13 16:30:37,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:37,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 16:30:37,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2024-10-13 16:30:37,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 59 [2024-10-13 16:30:37,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 126 [2024-10-13 16:30:38,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 279 [2024-10-13 16:30:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:38,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:30:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555181045] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:30:39,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:30:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-13 16:30:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051474978] [2024-10-13 16:30:39,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:30:39,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:30:39,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:30:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:30:39,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-10-13 16:30:39,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 196 flow. Second operand has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:39,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:39,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-10-13 16:30:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:41,737 INFO L124 PetriNetUnfolderBase]: 1061/2296 cut-off events. [2024-10-13 16:30:41,737 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-13 16:30:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 2296 events. 1061/2296 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13355 event pairs, 163 based on Foata normal form. 36/2157 useless extension candidates. Maximal degree in co-relation 4236. Up to 319 conditions per place. [2024-10-13 16:30:41,752 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 193 selfloop transitions, 27 changer transitions 3/241 dead transitions. [2024-10-13 16:30:41,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 241 transitions, 1084 flow [2024-10-13 16:30:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 16:30:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 16:30:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 626 transitions. [2024-10-13 16:30:41,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5131147540983606 [2024-10-13 16:30:41,756 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 196 flow. Second operand 20 states and 626 transitions. [2024-10-13 16:30:41,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 241 transitions, 1084 flow [2024-10-13 16:30:41,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 241 transitions, 1074 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:30:41,762 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 326 flow [2024-10-13 16:30:41,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=326, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-10-13 16:30:41,763 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-10-13 16:30:41,763 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 326 flow [2024-10-13 16:30:41,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.210526315789473) internal successors, (422), 19 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:41,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:41,764 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:41,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:30:41,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:30:41,965 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:41,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash 121841052, now seen corresponding path program 1 times [2024-10-13 16:30:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401907171] [2024-10-13 16:30:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:42,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:42,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401907171] [2024-10-13 16:30:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401907171] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056671206] [2024-10-13 16:30:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:42,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:42,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:42,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:42,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:30:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:42,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-13 16:30:42,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:42,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 16:30:42,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2024-10-13 16:30:42,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 59 [2024-10-13 16:30:43,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 126 [2024-10-13 16:30:43,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 343 treesize of output 279 [2024-10-13 16:30:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:43,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:30:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:43,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056671206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:30:43,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:30:43,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-10-13 16:30:43,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34141045] [2024-10-13 16:30:43,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:30:43,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:30:43,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:30:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:30:43,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 61 [2024-10-13 16:30:43,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 326 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:43,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:43,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 61 [2024-10-13 16:30:43,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:45,970 INFO L124 PetriNetUnfolderBase]: 1598/3595 cut-off events. [2024-10-13 16:30:45,971 INFO L125 PetriNetUnfolderBase]: For 1606/1606 co-relation queries the response was YES. [2024-10-13 16:30:45,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8379 conditions, 3595 events. 1598/3595 cut-off events. For 1606/1606 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23966 event pairs, 223 based on Foata normal form. 48/3453 useless extension candidates. Maximal degree in co-relation 7188. Up to 1255 conditions per place. [2024-10-13 16:30:45,995 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 179 selfloop transitions, 22 changer transitions 3/223 dead transitions. [2024-10-13 16:30:45,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 223 transitions, 1160 flow [2024-10-13 16:30:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:30:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:30:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 505 transitions. [2024-10-13 16:30:45,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5519125683060109 [2024-10-13 16:30:45,999 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 326 flow. Second operand 15 states and 505 transitions. [2024-10-13 16:30:45,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 223 transitions, 1160 flow [2024-10-13 16:30:46,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 223 transitions, 1102 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-10-13 16:30:46,009 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 438 flow [2024-10-13 16:30:46,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=438, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-10-13 16:30:46,009 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-10-13 16:30:46,010 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 438 flow [2024-10-13 16:30:46,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:46,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:46,010 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:46,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:30:46,211 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,SelfDestructingSolverStorable6 [2024-10-13 16:30:46,211 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:30:46,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1125153919, now seen corresponding path program 1 times [2024-10-13 16:30:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31782872] [2024-10-13 16:30:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:46,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31782872] [2024-10-13 16:30:46,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31782872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:46,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74984] [2024-10-13 16:30:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:46,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:46,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:46,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:46,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:30:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:46,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-13 16:30:46,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:46,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-13 16:30:46,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 63 [2024-10-13 16:30:47,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 446 [2024-10-13 16:30:48,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 226 [2024-10-13 16:30:48,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 436 treesize of output 375 [2024-10-13 16:30:49,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1202 treesize of output 1035 [2024-10-13 16:30:50,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3531 treesize of output 3035 [2024-10-13 16:30:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:55,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:30:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:59,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:30:59,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:30:59,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 23 [2024-10-13 16:30:59,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174603512] [2024-10-13 16:30:59,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:30:59,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 16:30:59,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 16:30:59,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=454, Unknown=1, NotChecked=0, Total=552 [2024-10-13 16:30:59,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 61 [2024-10-13 16:30:59,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 438 flow. Second operand has 24 states, 24 states have (on average 24.0) internal successors, (576), 24 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:59,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:59,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 61 [2024-10-13 16:30:59,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:07,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 16:31:09,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 16:31:13,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 16:31:16,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-13 16:31:37,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-13 16:31:37,740 INFO L124 PetriNetUnfolderBase]: 1628/3613 cut-off events. [2024-10-13 16:31:37,741 INFO L125 PetriNetUnfolderBase]: For 1525/1525 co-relation queries the response was YES. [2024-10-13 16:31:37,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8549 conditions, 3613 events. 1628/3613 cut-off events. For 1525/1525 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23855 event pairs, 223 based on Foata normal form. 24/3447 useless extension candidates. Maximal degree in co-relation 7336. Up to 802 conditions per place. [2024-10-13 16:31:37,764 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 201 selfloop transitions, 42 changer transitions 3/266 dead transitions. [2024-10-13 16:31:37,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 266 transitions, 1340 flow [2024-10-13 16:31:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 16:31:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 16:31:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 738 transitions. [2024-10-13 16:31:37,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260156806842481 [2024-10-13 16:31:37,768 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 438 flow. Second operand 23 states and 738 transitions. [2024-10-13 16:31:37,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 266 transitions, 1340 flow [2024-10-13 16:31:37,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 266 transitions, 1326 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:31:37,779 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 540 flow [2024-10-13 16:31:37,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=540, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-10-13 16:31:37,780 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2024-10-13 16:31:37,781 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 540 flow [2024-10-13 16:31:37,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.0) internal successors, (576), 24 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:37,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:37,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:37,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:31:37,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:37,986 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-13 16:31:37,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 520033750, now seen corresponding path program 1 times [2024-10-13 16:31:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425131247] [2024-10-13 16:31:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:38,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425131247] [2024-10-13 16:31:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425131247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:38,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146127073] [2024-10-13 16:31:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:38,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:38,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:38,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:38,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:31:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:38,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 16:31:38,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:38,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-13 16:31:38,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 63 [2024-10-13 16:31:38,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 154 [2024-10-13 16:31:38,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 129 [2024-10-13 16:31:43,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 301 [2024-10-13 16:31:55,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 766 treesize of output 657